DK155796B - Analogifremgangsmaade til fremstilling af 2-(2-(4-(diphenylmethyl)-1-piperazinyl)ethoxy)-eddikesyrer eller farmaceutisk acceptable salte heraf - Google Patents
Analogifremgangsmaade til fremstilling af 2-(2-(4-(diphenylmethyl)-1-piperazinyl)ethoxy)-eddikesyrer eller farmaceutisk acceptable salte heraf Download PDFInfo
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- DK155796B DK155796B DK005388A DK5388A DK155796B DK 155796 B DK155796 B DK 155796B DK 005388 A DK005388 A DK 005388A DK 5388 A DK5388 A DK 5388A DK 155796 B DK155796 B DK 155796B
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- DK
- Denmark
- Prior art keywords
- piperazinyl
- ethoxy
- diphenylmethyl
- compounds
- formula
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- 238000000034 method Methods 0.000 title claims abstract description 24
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- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- -1 2- (4- (DIPHENYLMETHYL) -1-PIPERAZINYL) ETHOXY Chemical class 0.000 title abstract description 13
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- 125000005982 diphenylmethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])(*)C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 claims description 3
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- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 1
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- 150000001298 alcohols Chemical class 0.000 description 1
- 229910000102 alkali metal hydride Inorganic materials 0.000 description 1
- 150000008046 alkali metal hydrides Chemical class 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 230000003444 anaesthetic effect Effects 0.000 description 1
- 230000036783 anaphylactic response Effects 0.000 description 1
- 208000003455 anaphylaxis Diseases 0.000 description 1
- 230000001088 anti-asthma Effects 0.000 description 1
- 230000003110 anti-inflammatory effect Effects 0.000 description 1
- 230000002921 anti-spasmodic effect Effects 0.000 description 1
- 239000003529 anticholesteremic agent Substances 0.000 description 1
- 229940125715 antihistaminic agent Drugs 0.000 description 1
- 229940124575 antispasmodic agent Drugs 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 239000011668 ascorbic acid Substances 0.000 description 1
- 235000010323 ascorbic acid Nutrition 0.000 description 1
- 229960005070 ascorbic acid Drugs 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000037396 body weight Effects 0.000 description 1
- 230000003182 bronchodilatating effect Effects 0.000 description 1
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 210000003169 central nervous system Anatomy 0.000 description 1
- 230000002490 cerebral effect Effects 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- VXIVSQZSERGHQP-UHFFFAOYSA-N chloroacetamide Chemical compound NC(=O)CCl VXIVSQZSERGHQP-UHFFFAOYSA-N 0.000 description 1
- UXTMROKLAAOEQO-UHFFFAOYSA-N chloroform;ethanol Chemical compound CCO.ClC(Cl)Cl UXTMROKLAAOEQO-UHFFFAOYSA-N 0.000 description 1
- 230000001713 cholinergic effect Effects 0.000 description 1
- 235000015165 citric acid Nutrition 0.000 description 1
- 229940125904 compound 1 Drugs 0.000 description 1
- 229940125782 compound 2 Drugs 0.000 description 1
- 229940126214 compound 3 Drugs 0.000 description 1
- JNGZXGGOCLZBFB-IVCQMTBJSA-N compound E Chemical compound N([C@@H](C)C(=O)N[C@@H]1C(N(C)C2=CC=CC=C2C(C=2C=CC=CC=2)=N1)=O)C(=O)CC1=CC(F)=CC(F)=C1 JNGZXGGOCLZBFB-IVCQMTBJSA-N 0.000 description 1
- 239000004121 copper complexes of chlorophylls and chlorophyllins Substances 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 229960000265 cromoglicic acid Drugs 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000007884 disintegrant Substances 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 230000001882 diuretic effect Effects 0.000 description 1
- 239000006196 drop Substances 0.000 description 1
- 239000003937 drug carrier Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 235000003599 food sweetener Nutrition 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 235000011167 hydrochloric acid Nutrition 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000001900 immune effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000010253 intravenous injection Methods 0.000 description 1
- TYQCGQRIZGCHNB-JLAZNSOCSA-N l-ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(O)=C(O)C1=O TYQCGQRIZGCHNB-JLAZNSOCSA-N 0.000 description 1
- 239000008101 lactose Substances 0.000 description 1
- 231100000518 lethal Toxicity 0.000 description 1
- 230000001665 lethal effect Effects 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 235000019359 magnesium stearate Nutrition 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- RDFIZBYHUOHTQI-UHFFFAOYSA-N methyl 2-(2-chloroethoxy)acetate Chemical compound COC(=O)COCCCl RDFIZBYHUOHTQI-UHFFFAOYSA-N 0.000 description 1
- 150000004702 methyl esters Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 239000001272 nitrous oxide Substances 0.000 description 1
- 239000002674 ointment Substances 0.000 description 1
- 229940092253 ovalbumin Drugs 0.000 description 1
- 238000007911 parenteral administration Methods 0.000 description 1
- 239000006187 pill Substances 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000009291 secondary effect Effects 0.000 description 1
- 230000008313 sensitization Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000004936 stimulating effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000003765 sweetening agent Substances 0.000 description 1
- 239000006188 syrup Substances 0.000 description 1
- 235000020357 syrup Nutrition 0.000 description 1
- 239000003826 tablet Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D295/00—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms
- C07D295/04—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms
- C07D295/08—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by singly bound oxygen or sulfur atoms
- C07D295/084—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by singly bound oxygen or sulfur atoms with the ring nitrogen atoms and the oxygen or sulfur atoms attached to the same carbon chain, which is not interrupted by carbocyclic rings
- C07D295/088—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by singly bound oxygen or sulfur atoms with the ring nitrogen atoms and the oxygen or sulfur atoms attached to the same carbon chain, which is not interrupted by carbocyclic rings to an acyclic saturated chain
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P37/00—Drugs for immunological or allergic disorders
- A61P37/08—Antiallergic agents
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- Organic Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Pharmacology & Pharmacy (AREA)
- Engineering & Computer Science (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Medicinal Chemistry (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Pulmonology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Immunology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Hydrogenated Pyridines (AREA)
- Plural Heterocyclic Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
DK 155796B
Den foreliggende opfindelse angår en analogifremgangsmåde til fremstilling af hidtil ukendte 2—[2—[4— (diphenylmethyl)-1-piperazinyl]ethoxy]-eddikesyrer eller ikke toksiske, farmaceutisk acceptable salt deraf, 5 hvilke forbindelser er nyttige på det terapeutiske område.
De nævnte hidtil ukendte forbindelser har den almene formel 10 \-A /“λ ^
CH-N β-±-{ CH0) o-0-r~CHo-G^ I
/ny s_/ *· 2 2 ^ 2 soh X' 15 hvori X og X' hver især betegner et hydrogenatom, et halogenatom, en alkoxygruppe med 1-4 carbonatomer eller en trifluormethylgruppe, og m er 1 eller 2, eller er ikke-toksiske, farmaceutisk acceptable salte 20 deraf.
Med udtrykket "ikke-toksiske, farmaceutisk acceptable salte" som her benyttet menes ikke blot additionssaltene af syrerne med formlen I med farmaceutisk acceptable syrer, såsom eddikesyre, citronsyre, rav-25 syre, ascorbinsyre, saltsyre, hydrogenbromidsyre, svovlsyre og phosphorsyre, men også de farmaceutisk acceptable salte af syrerne med formlen I, såsom metalsaltene (f.eks. natrium- eller kaliumsalte), ammoniumsaltene, aminsaltene og aminosyresaltene.
30 -De foretrukne forbindelser fremstillet ifølge opfindelsen er: 2-fc-|4-[(4-chlorphenyl) phenylmethyl] -1-piperazinyl] ethoxy] -eddikesyre og dens dihydrochlorid, kalium-2-[2-[4-[(4-chlorphenyl)phenylmethyl]-1-pipera-35 zinyl] ethoxy] -acetat 2- [2- [4-(diphenylmethyl)-1-piperazinyl]ethoxy]-eddikesyre og dens dihydrochlorid, 2
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2- [2- [4- [ (4-fluorphenyl) phenylmethyl] -1-piperazinyl] -ethoxy]-eddikesyre og dens hydrat.
Forbindelserne med formlen I har interessante farmakologiske egenskaber. De er især værdifulde som 5 antiallergiske, antihistaminiske, bronchodilatatoriske og antispasmodiske midler.
De er ydermere karakteristiske ved, at deres sekundære virkninger med hensyn til at stimulere eller undertrykke centralnervesystemet, hvilke virkninger 10 ofte iagttages i forbindelse med konventionelle an-tihistaminika ., er minimale. Desuden udviser de interessante anæstetiske og antiinflammatoriske egenskaber, og de viser sig også virksomme ved cerebral og cardiovaskulær insufficiens.
15 I en artikel af H.B. WRIGHT og D.L. MARTIN
(J. med. Chem. _1J_, (1968), 390-391 ) studeres virkningen af 2-[4-[(4-chlorphenyl)phenylmethyl]-1-pipe-razinyljacetamid som hypocholesteræmisk middel, men de opnåede resultater var ikke meget opmuntrende.
20 Endvidere har 2-[4-(diphenylmethyl)-1-piperazi- nyl]-acetamid ifølge belgisk patentskrift nr. 763.609 en diuretisk virkning. I patentskriftet beskrives også lignende acetamider, hvori nitrogenatomet i amidgruppen er substitueret, hvilke acetamider har forskellige 25 andre farmakologiske egenskaber.
De farmakologiske prøver, der er blevet udført i forbindelse med den foreliggende opfindelse, viser, at de antiallergiske, antispasmodiske og antihistaminiske virkninger af disse acetamider, såvel som af de 30 tilsvarende syrer, har meget lille interesse (se nedenstående afsnit Farmakologi).
Fremgangsmåden ifølge opfindelsen til fremstilling af 2-[2-[4-(diphenylmethyl)-1-piperazinyl]ethoxy]-eddikesyrerne med formlen I er ejendommelig ved, at man, i 35 et vandig eller vandigt-alkoholisk medium og ved hjælp af en uorganisk base, hydrolyserer et funktionelt derivat af en 2-[2-[4-(diphenylmethyl)-1-piperazinyl]ethoxy]-eddikesyre, nemlig et amid eller en lavere alkylester med formlen:
DK 155796B
*0\ ΓΛ
/T-yMV_J^CE2)2-O^CE2^NY
hvori X, X' og m har de ovenfor angivne betydninger, og Y betegner en gruppe -nh2 eller en gruppe -OR', 1q hvori R' er en lavere alkylgruppe, f.eks. en methyl-eller ethylgruppe, hvorefter man eventuelt omdanner en saledes opnået 2-[2-[4-(diphenylmethyl)-1-piperazinyl]-ethoxy]-eddikesyre til et ikke-toksisk, farmaceutisk acceptabelt salt deraf.
15 Denne hydrolyse udføres ved hjælp af en uor ganisk base, såsom natrium- eller kaliumhydroxid, i et vandigt eller vandigt-alkoholisk medium, f.eks. i vandig methanol, ethanol eller lignende, ved en temperatur fra 20°C til reaktionsblandingens tilbage- 20 svalingstemperatur.
De således opnåede 2-[4-(diphenylmethyl)-1-piperazinyl]-eddikesyrer kan eventuelt omdannes til ikke-toksiske farmaceutisk acceptable salte deraf ved i og for sig kendte fremgangsmåder.
25 Amiderne med formlen II, hvori Y = -NH2' °9 som kan anvendes som udgangsmaterialer til fremstilling af syrerne med formlen I ved den ovenfor beskrevne fremgangsmåde ,kan fremstilles ved forskellige fremgangsmåder, f.eks.: 30 A.1. Omsætning mellem en 1-(diphenylmethyl)-piperazin med formlen III med et 2-(2-halogenefehoscy)-acetamid med formlen IV ifølge nedenstående reaktionsskema: \_/\ t-\ /0 5 ___ CH-N NK + Z—r-( CK )?-0^-Cr'-C^ —> (n) med Y = -NH, (Ty w - - 2 ΧΛ—/ (III) <IV> 4
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hvori X, X' og m har de ovenfor angivne betydninger, og Z betegner et halogenatom.
Denne omsætning udføres i almindelighed ved opvarmning af reaktionsblandingen til 80 til 5 150°C i flere timer i et indifferent opløsnings middel valgt blandt alifatiske alkoholer, alifatiske ketoner (f.eks. methylethylketon) og aromatiske carbonhydrider (f.eks. toluen eller xylen) og i nærværelse af en syreacceptor, såsom 10 en tertiær organisk base (f.eks. triethylamin) eller en uorganisk base (f.eks. natriumcarbonat).
A.2. Omsætning af et alkalimetalsalt af en 2 — [4— (diphenylmethyD-1-piperazinyl]-ethanol med formlen V med et 2-halogenacetamid med formlen VI 15 ifølge nedenstående reaktionsskema: XX - CH—N K—j— (CS^, )„ —0—{—Me + Z-CSL-C > (II) med Y — NH« /TV w “a 20 *' (V) (VI) hvori X, X’ og ro har de ovenfor angivne betydninger, Z er et halogenatom, og Me er et alkalimetalatom .
25
Omsætningen mellem alkalimetalsaltet med formlen V og halogenacetamidet med formlen VI udføres i et indifferent opløsningsmiddel (f.eks. toluen, xylen eller dimethylformamid), ved en 30 temperatur fra 0°C til reaktionsblandingens tilbagesvalingstemperatur.
Det ved denne omsætning anvendte alkalimetalsalt med formlen V kan fremstilles in situ ved omsætning af en egnet 2-[4-diphenylmethyl)-35 1-piperazinyl]-ethanol med et alkalimetalhydrid, i almindelighed med natriumhydrid, i et indifferent opløsningsmiddel, såsom toluen, xylen eller dimethylformamid.
5
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Fremstillingen af alkoholerne svarende til formlen V (men hvor Me = H) er beskrevet i US-patentskrift nr. 2.899.436.
Esterne med formlen II, hvori Y = -OR', og som 5 kan anvendes som udgangsmaterialer til fremstilling af syrerne med formlen I ved den ovenfor beskrevne fremgangsmåde, kan fremstilles ved forskellige fremgangsmåder , f.eks.: E.1. Omsætning af en 1-(diphenylmethyl)piperazin med 10 formlen III med et lavere alkyl-(2-halogenethoxy)- acetat med formlen VII ifølge nedenstående reaktionsskema: /—\ ;h-n m + z-tF(ch ) -ο^ζ-CE —c —> (n) med Y = -OR' // Sy \_/ or1 (III) ’ (VII) hvori X, X' og m har de ovenfor angivne be-20 tydninger, R’ er en lavere alkylgruppe, og Z er et halogenatom. Således kan R' f.eks. være en methyl- eller ethylgruppe, og Z kan være et chlor- eller bromatom.
Denne omsætning udføres i almindelighed ved 25 opvarmning af reaktionsblandingen til en tempera tur fra 80 til 150°C i flere timer i et indifferent opløsningsmiddel, såsom benzen, toluen eller xylen, i nærværelse af en syreacceptor, såsom en tertiær organisk base (f.eks. tri-30 ethylamin) eller en uorganisk base (f.eks. na- .triumcarbonat).
E.2. Omsætning af et alkalimetalsalt af en 2-[4-(diphenylmethyl)-l-piperazinylj^sthanol med formlen V med en lavere alkylester af en 2-halogen-35 eddikesyre med formlen VIII ifølge nedenstående reaktionsskema:
DK 155 796 B
CH2) 2-03^-Me + Z-CHg-q^g, —*( II)med Y=-OR* X' (V) (VIII) hvori R', X, X' og m har de ovenfor angivne betydninger, Z er et halogenatom, og Me er et alkalimetalatom. Omsætningen mellem alkalimetalsaltet med 10 formlen V og den halogenerede ester med formlen VIII udføres i et indifferent opløsningsmiddel ved en temperatur fra 0°C til reaktionsblandingens tilbagesvalingstemperatur.
Fremgangsmåden ifølge opfindelsen belyses nærmere IC e gennem nedenstående eksempel 3, medens eksempel 1-2 belyser udgangsmaterialernes fremstilling.
Eksempel 1 ^ Fremstilling af amider med formlen II (Y = -N^).
1.1. 2-[2-[4-(diphenylmethyl)-1-piperazinyl]- ethoxyj-acetamid-dihydrochlorid.(Fremgangsmåde A. 1).
En blanding af 37,8 g (0,15 mol) l-(diphenyl-25 methyl)-piperazin, 27,5 g (0,2 mol) 2-(2-chlor-ethoxy)-acetamid og 26,5 g vandfrit natriumcarbo-nat i 120 ml xylen opvarmes i 4 timer til 90 til 120°C. Derpå sættes 120 ml benzen til reaktionsblandingen, det dannede bundfald frafiltreres,og den organiske fase ekstraheres med fortyndet saltsyre (30 ml koncentreret saltsyre + 100 ml vand). Der tilsættes 40 ml koncentreret vandig natriumhydroxidopløsning efterfulgt af ekstraktion med benzen.
Benzenopløsningen vaskes med vand og tørres over vandfrit natriumcarbonat,og benzenet afdampes ind- 35
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7 til tørhed. Inddampningsres’ten tritureres med diethylether og henstilles til krystallisation.
Der opnås 2-[2-[4-(diphenylmethyl)-1-piperazinyl]-ethoxy]-acetamid i et udbytte på 73% af det teore-^ tiske; smp. 119-120°C.
Dihydrochloridet, fremstillet i ethanol, smelter ved 230°C under sønderdeling.
Analyse for ^2^27^3^2 * ^ HC1 i %
Beregnet: C 59,15 H 6,85 N 9,85 Cl 16,63 10 Fundet: 58,99 6,80 9,79 16,46
Nedenstående forbindelser er også blevet fremstillet ved den ovenfor beskrevne fremgangsmåde: 2-[2-[4-[(4-chlorphenyl)phenylmethyl]-piperazinyl]ethoxyh 15 acetamid; udbytte 47% af det teoretiske, smp. lll-112°c, efter omkrystallisation af ethanol.
Analyse for C2iH26C^N3°2 * *
Beregnet: C 65,02 H 6,71 N 10,83 Cl 9,14 20 Fundet : 64,59 7,00 10,82 9,54 2-[2-[2-[4-diphenylmethyl)-1-piperazinyl]ethoxy]-ethoxy]-acetamid; produktet, opnået i rå tilstand i praktisk talt kvantitativt udbyttefkan benyttes som 25 sådant uden yderligere rensning til fremstilling af den tilsvarende syre (se eksempel 3.2).
2-[2-[2-[4-[(4-chlorphenyl)phenylmethyl]-1-piperazinyl]-ethoxy]ethoxy]-acetamid; produktet, opnået i rå til-30 stand i praktisk talt kvantitativt udbytte, kan benyttes som sådant uden yderligere rensning til fremstilling af den tilsvarende syre (se eksempel 3.2).
2-[2-[4-[(4-fluorphenyl)phenylmethyl]-1-piperazinyl]-35 ethoxy]-acetamid; udbytte 54,7% af det teore tiske; smp. 105-107°C, efter omkrystallisation af ace-tonitril.
Analyse for ^21^26FN3^2 * ^
Beregnet: C 67,90 Η 7,09 Ν 11,31
Fundet : 68,3 7,40 11,21 8
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2-[2-[4-[(2-chlorphenyl)phenylmethyl]-1-piperazinyl]-5 ethoxy]-acetamid; udbytte 57% af det teoretiske; smp. 129-130°C, efter omkrystallisation af benzen.
Analyse for C21H2gClN302 i %
Beregnet: C 65,0 H 6,75 N 10,8 Cl 9,4
Fundet : 66,3 7,0 10,6 9,7 10 Dihydrochloridet af dette amid er også blevet fremstillet; det indeholder en del monohydrochlorid.
Smp. 218-220°C efter omkrystallisation af isopropyl-alkohol.
Analyse for C2iH26C1N3°2 .2 HC1 i % 15 Beregnet: C 54,72 H 6,12 N 9,11 Cl~ 15,38 Cltotal23,08
Fundet : 55,69 6,52 9,20 11,86 20,27 2-[2-[4-[(4-methoxyphenyl)phenylmethyl]-1-piperazinyl]-ethoxy]-acetamid-dihydrochlorid; udbytte 20% af det 20 teoretiske; smp. 175-176°C efter omkrystallisation af acetonitril.
Analyse for C22H29N3°3’^ HCl i %
Beregnet: C 57,8 H 6,8 N 9,2 Cl 15,5
Fundet : 57,8 7,2 9,5 15,9 25 2-[2-[2-[4-[[4-(trifluormethyl)phenyl]phenylmethyl]-1-piperazinyl ] ethoxy] ethoxy] -acetamid; udbytte 78%.
Dihydrochloridet smelter ved 178-181°C efter omkrystallisation af acetonitril.
30 Analyse for C24H30^3N3®3 * i %
Beregnet: C 53,53 H 5,99 N 7,80 Cl 13,17
Fundet : 51,47 5,60 7,89 13,10 2-[2-[2-[4-[bis(4-fluorphenyl)methyl]-1-piperazinyl]-35 ethoxy]ethoxy]-acetamid ; udbytte 90%.
Dihydrochloridet smelter ved 188-190°C efter omkrystallisation af acetonitril.
9
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Analyse for C23H29F2N3°3*i %
Beregnet: C 54,54 H 6,17 N 8,29 Cl" 14,0
Fundet : 54,01 6,38 8,07 13,75 1.2. 2—[2—[2—[4—(Diphenylmethy1)-1-piperazinyl]ethoxy]- 5 ethoxy]-acetamidrdihydrochlorid. (Fremgangsmåde A.2).
24/2 g (0,53 mol) natriumhydrid sættes til en opløsning af 172,9 g (0,508 mol) 2-[2-[4-<di-phenylmethyl)-1-piperazinyl]ethoxy]-ethanol i 10 180 ml dimethylformamid. Efter endt tilsætning opvarmes reaktionsblandingen til 40°C i 30 minutter. Efter afkøling tilsættes 60 g (0,624 mol) 2-chloracet-amid i løbet af 10 minutter. Reaktionsblandingens temperatur forøges til 40°C, og den holdes ved 15 denne temperatur i yderligere 30 minutter. Efter afkøling tilsættes 30 ml vand efterfulgt af ind-dampning til tørhed. Inddampningsresten suspenderes i 1 liter vand, og den opnåede suspension ekstra-heres med benzen. Den organiske fase tørres over 20 kaliumcarbonat og inddampes derpå. Inddampnings resten renses ved chromatografi på en søjle af siliciumoxid (elueringsmiddel: chlorform-ethanol 95:5). Det opnåede produkt opløses i 45 ml ethanol, hvortil sættes 24 ml af en 5,1 N ethanolisk opløs-25 ning af saltsyre. Der opnås 19 g 2-[2-[2-[4-(di- pheny lmethyl)-1-piperazinyl]ethoxy]ethoxy]-acet-amid-dihydrochlorid i et udbytte på 8% af det teoretiske; smp. 196-197°C efter omkrystallisation af acetonitril.
30 Analyse for C23H3iN3°3*2 HC1 i %
Beregnet: C 58,72 H 7,07 N 8,93 Cl“ 15,07
Fundet : 58,29 6,83 8,44 15,01 , Følgende forbindelse er blevet fremstillet 35 ved den ovenfor beskrevne fremgangsmåde.
2-[2-[2-[4-[(4-chlprpheny1)phenylmethyl]-1-piperazinyl] ethoxy] ethoxy] -acetamid-dihydrochlorid; produktet omkrystalliserer af isopropylalkohol 10
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med 1 mol krystallisationsopløsningsmiddel. Udbytte 11% af det teoretiske; smp. 100-102°C.
Analyse for Co-H_nClN_0-, .C,H_OH.2 HC1 i %
Beregnet: C 55,27 H 7,16 N 7,43 Cl“ 12,55 CI T.8,22 5 Fundet : 53,10 6,93 7,18 12,56 18,79
Eksempel 2
Fremstilling af estere med formlen II (Y = -OR'). Methyl-2- [ 2- [ 4- [ (4-chlo rphenyl) phenylmethyl ] -1 -pi-10 perazinyl]ethoxy]-acetat. (Fremgangsmåde E.1).
En blanding af 87 g (0,30 mol) l-[(4-chlor-phenyl)phenylmethyl]-piperazin, 58 g (0,38 mol) methyl-(2-chlorethoxy)-acetat og 40,3 g (0,38 mol) natriumcarbonat i 500 ml vandfrit xylen opvarmes 15 under tilbagesvaling i 40 timer under god omrø ring. Derpå afkøles reaktionsblandingen og filtreres, og det faste stof vaskes med benzen, idet det vaskede faste stof bortkastes. Filtratet inddampes til tørhed,og inddampningsresten renses 20 ved chromatografi på en søjle af siliciumoxid (elueringsmiddel: chloroform:methanol 97:3.
Der opnås herved 34 g (27,8% af det teoretiske ' udbytte) af den ønskede methylester.
Analyse for ^22^27^^2^3 i % 25 Beregnet: C 65,60 H 6,70 N 6,95
Fundet 63,87 6,55 6,59
Nedenstående to additionssalte af denne ester blev også fremstillet: 30
Dihydrochloridet; smp. 123-125°C.
Analyse for C22H27C^N2^3^ ^
Beregnet: C 55,50 H 6,10 N 5,89 Cl“ 14,92
Fundet : 55,20 6,23 5,65 13,2 11
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Dimaleatet; smp. 128-130°C.
Analyse for C^q H35C1N2°11 1 %
Beregnet: C 56,70 H 5,51 N 4,41
Fundet : 57,01 5,22 4,45 5
Eksempel 3
Fremstilling af syrer med formlen I.
3.1. 2—[2—[4—[(4-Chlorphenyl)phenylmethyl]-1-piperazi-nyl]ethoxy]-eddikesyre.
10 16,8 g (0,0417 mol) methyl-2-[ 2-[ 4-[ (-.4-chlorr· phenyl)phenylmethyl]-1-piperaz inyl]ethoxy]-acetat (fremstillet på den ovenfor i eksempel 2 beskrevne måde) opløses i 65 ml absolut ethanol. Der tilsættes derpå 42 ml af en 1 N ethanolisk opløsning af kaliumhydroxid, 1 5 og reaktionsblandingen opvarmes under tilbagesvaling i 4 ti mer. Den afkøles derpå, og bundfaldet fjernes ved filtrering, efter vask med diethylether. Filtratet inddampes til tørhed, og inddampningsresten tritureres med diethylether og henstilles til krystallisation.
20 Der opnås 10,5 g hygroskopisk kalium-2-[2-[4-[(4- chlorphenyl)phenylmethyl]-1-piperazinyl]ethoxy]-acetat. Udbyttet er 59% af det teoretiske; smp. 161-163°C.
Analyse for C2iH24C^N2^3K i % 25 Beregnet: C 59,0 H 5,63 N 6,56
Fundet -: 57,97 5,77 6,48
Kaliumsaltet opløses i 100 ml vand og indstilles på pH 4 med 10%'s saltsyre. Opløsningen 30 ekstraheres med chloroform, og den organiske fase tørres over .. magnesiumsulfat, hvorpå den inddampes til tørhed. Inddampningsresten tritureres med diethylether og henstilles til krystallisation.
Der opnås 7,5 g 2-[2-[4-[(4-chlorphenyl)phenyl-35 methyl]-l-piperazinyl]ethoxy]-éddikesyre. Udbytte 81% af det teoretiske; smp. 110-115°C.
Analyse for ^2-^25^-^2^3 i %
Beregnet: C 64,80 H 6,48 N 7,20
Fundet : 62,3 6,48 6,92
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12 5 Det tilsvarende dihydrochlorid, fremstillet i toluen i et udbytte på 80% af det teoretiske, smelter ved 225°C.
Analyse for ^2^25^-^2^3 HC1 i %
Beregnet: C 54,60 H 5,85 N 6,07 Cl 15,38 03^° 23,07 10 Fundet : 54,42 5,60 6,01 15,29 23,08 3.2. 2-[2-[4-(Diphenylmethyl)-1-piperazinyl]ethoxy]- eddikesyre.
En blanding af 19 g (0,054 mol) 2-[2-[4-(di-15 phenylmethyl)-1-piperazinyl]ethoxy]-acetamid (fremstillet på den i eksempel 1.1 beskrevne måde) i 200 ml ethanol og 27 ml af en 4 N ethanolisk opløsning af natriumhydroxid opvarmes under tilbagesvaling i 3 timer. Reaktionsblandingen ind-20 stilles på pH 6,3 med 29,7 ml 3,61 N saltsyre, hvorefter ethanolet afdampes i vakuum. Det opnåede bundfald frafiltreres. Efter afdampning af opløsningsmidlet opnås 17,4 g rå 2-[2-[4-(diphenylmethyl) -1-piperazinyl]ethoxy]-eddikesyre.
25 Udbytte 91% af det teoretiske; smp. 100°C.
Analyse for C21H26^2°3 * %
Beregnet: 071,1 H 7,39 N 7,90
Fundet : 69,1 7,07 7,12 30 Det tilsvarende dihydrochlorid smelter ved 217-218°C efter omkrystallisation af isopropyl-alkohol.
Analyse for C21H26N2°3.2 HC1 i %
Beregnet: C 59,02 H 6,60 N 6,55 Cl“ 16,59 35 Fundet : 58,83 6,94 6,33 15,90
De nedenstående forbindelser er blevet fremstillet ved den ovenfor beskrevne metode:
, DK 155796B
13 2- [2- [2- [4- (diphenylxnethyl) -1-piperazinyl] -ethoxy ]-ethoxy]-eddikesyre-dihydrochlorid; udbytte 57% af det teoretiske; smp. 85°C (lyofiliseret; sønderdeling) .
5 Analyse for C23H30N2°4*2 HC1 * *
Beregnet: C 58,60 H 6,84 N 5,94 Cl 15,04
Fundet : 56,82 7,82 6,02 16,76 2-[2-[2-[4-[(4-chlorphenyl)phenylmethyl]-1-pipera-10 zinyl]ethoxy]ethoxy]-eddikesyre-dihydrochlorid; udbytte 82% af det teoretiske; smp. 112°C (lyofili-seret).
Analyse for c23H2gClN204.2 HC1 i %
Beregnet: C 54,6 H 5,78 N 5,54 citotal 21,03 15 Fundet : 52,48 6,10 5,72 22,19 2-[2-[4-[(4-fluorphenyl)phenylmethyl]-1-piperazinyl] ethoxy]-eddikesyre^hydrat; udbytte 100% af det teoretiske; smp. ikke skarpt (fra 70°C og opefter 20 bliver produktet gradvis blødt).
Analyse for C2]_H25FN2°3* 3/2 H20 i %
Beregnet: C 63,1 H 7,0 N 7,0
Fundet : 63,7 7,6 6,9 25 2-[2-[4-[(4-methoxypheny1)phenylmethyl]-1-pipera zinyl] ethoxy]-eddikesyre-dihydrochlorid; udbytte 35% af det teoretiske; smp. 214-217°C (acetonitril; sønderdeling).
Analyse for C22H28N2°4'2 HC1 i % 30 Beregnet: C 57,7 H 6,6 N 6,1 Cl" 15,5
Fundet : 53,2 6,5 6,0 17,5 2-[2-[4-[(2-chlorphenyl)phenylmethyl]-1-piperazi-nyl]ethoxy]-eddikesyre; udbytte 50% af det teo-35 retiske; smp. 96-100°C (lyofiliseret).
Analyse for C2iH25C1N2°3 1 %
Beregnet: C 64,8 H 6,5 N 7,2 Cl 9,1
Fundet : 62,3 6,9 6,9 10,2 14
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5 2-[2-[2-[4-[[4-(trifluormethyl)phenyl]phenylmethyl]- 1-piperazinyl]ethoxy]ethoxy]-eddikesyre. Udbytte 67%.
Dioxalatet smelter ved 113-116°C (ethylacetat)
Analyse for C24H29F3N2°4·2C2°4H2 1 % 10 Beregnet: C 52,01 H 5,14 N 4,33
Fundet: 51,24 5,20 4,27 2-[2-[2-[4-[bis (4-fluorphenyl)methyl]-1-pipera-zinyl] ethoxy] ethoxy] -eddikesyre-dihydrochlorid.
15 Udbytte 40%; smp. 181-183°C (acetonitril)
Analyse for C23H28F2N2°4*2 HC1 1 %
Beregnet: C 54,54 H 5,95 N 5,52 Cl 13,3
Fundet: 54,26 6,13 5,57 15,29 2 0 Farmakologi.
Følgende forbindelser fremstillet ifølge foreliggende opfindelse blev underkastet farmakologisk afprøvning og gav de nedenfor beskrevne resultater: 25 kalium-2-[2-[4-[(4-chlorphenyl)phenylmethyl]-1-pipera-zinyl]ethoxy]-acetat (forbindelse A, fremstillet i eksempel 3.1); 2-[2-[4-[(4-chlorphenyl)phenylmethyl]-1-piperazinyl]-' 30 ethoxy]-eddikesyre (forbindelse B, fremstillet i eksempel 3.1) ; 2-[2-[4-[(4-chlorphenyl)phenylmethyl]-1-piperazinyl] -ethoxy]-eddikesyre-dihydrochlorid (forbindelse C, frem-35 stillet i eksempel 3.1);
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15 2-[2-[4-(diphenylmethyl)-1-piperazinyl]ethoxy]-eddikesyre (forbindelse D., fremstillet i eksempel 3.2) ; 2-[2-[2-[4-(diphenylmethyl)-1-piperazinyl]ethoxy]-5 ethoxy]-eddikesyre-di.hydrochlorid (forbindelse E, fremstillet i eksempel 3.2); 2-[2-[2-[4-[(4-chlorphenyl)phenylmethyl]-1-piperazinyl]-ethoxy]ethoxy]-eddikesyre-dihydrochlorid (forbindelse F, 10 fremstillet i eksempel 3.2); 2-[2-[4-[(4-fluorphenyl)phenylmethyl]-1-piperazinyl]-ethoxy]-eddikesyre-hydrat (forbindelse G, fremstillet i eksempel 3.2).
15 Følgende forbindelser, der ikke er fremstillet ved fremgangsmåden ifølge foreliggende opfindelse, blev også underkastet samme farmakologiske afprøvning; 20 2-[4-(diphenylmethyl)-1-piperazinyl]-acetamid (forbin delse 1, fremstillet ved den i belgisk patentskrift nr. 763.609 beskrevne fremgangsmåde), smp. 204°C.
2-[4-[(4-chlorphenyl)phenylmethyl]-1-piperazinyl]-acet-25 amid (forbindelse 2, se H.B. WRIGHT og D.L. MARTIN, loc. cit.; ligeledes fremstillet ved den i belgisk patentskrift nr. 763.609 beskrevne fremgangsmåde); smp. 145°C.
30 2-[4-(diphenylmethyl)-1-piperazinyl]-eddikesyre (forbindelse 3, fremstillet analogt med fremgangsmåden ifølge eksempel 3.2); smp. 176°C.
35 2—[4—[(4-chlorphenyl)phenylmethyl]-1-piperazinyl]- eddikesyre (forbindelse 4, ligedes fremstillet analogt med fremgangsmåden ifølge eksempel 3.2); smp. 106-108°C.
16
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1. Antiallergisk virkning.
Virkningen bestemmes overfor rotter ved hjælp af prøven for passiv cutan anafylaksi (PCA) (se J. GOOSE og A.M.J.N. BLAIR, Immunology, 3j6, (1969), 749-760; og 5 U. MARTIN og D. ROEMER, Arzneimittel-Forschung, 28, (1978) (5), 770-782).
Der benyttes hunrotter, hvis sider er blevet delvis barberet. I den således barberede zone injiceres intradermalt, til passiv sensibilisering af dyrene, 10 0,05 ml IGE antiovalbuminserum i en sådan fortynding, at der, på tidspunktet for PCA-prøven, på injektionsstedet fremkommer en tydelig plet med et overflade- 2 areal på ca. 100 mm .
72 Timer efter injektionen administreres 0,25 ml 15 af en opløsning af allergen indeholdende et farvningsmiddel (5 mg ovalbumin og 6 mg Evans Blue i 0,25 ml af en 0,9% natriumchloridopløsning) intravenøst.
På stedet for den intradermale injektion viser der sig en tydelig blå plet, hvis overflade måles.
20 For at prøve virkningen af forbindelserne frem stillet ifølge foreliggende opfindelse går man frem på samme måde, dog således: - at prøveforbindelsen administreres oralt 72 timer efter injektion af serum'et; 25 - at der 15 minutter efter denne administrering intravenøst injiceres 0,25 ml af opløsningen af allergenet; - at den blå plets overflade måles 30 minutter efter· administreringen af allergenet.
I nedenstående tabel er angivet de immunologi-30 ske' doser (ID 50 i ymol/kg) der, som gennemsnit for det totale antal dyr, der er underkastet prøven, medfører en reduktion på 50% af den farvede plets overfladeareal.
Af denne tabel fremgår, at forbindelserne frem-35 stillet ifølge foreliggende opfindelse er aktive, når de indgives pr. os, medens natriumcromoglycat er inak- 17
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tivt ved denne administreringsmåde, selvom det er velkendt for sin antiastmatiske virkning, når det administreres intravenøst. På den anden side viser forbindelserne 1, 2, 3 og 4 (ikke fremstillet ifølge opfin-5 delsen; forbindelser svarende til formlen I, men hvor m = 0) sig at være af ringe interesse.
Prøveforbindelse ID 50 per os i ymol/kg
Natriumcromoglycat Inaktivt 10 G 10 jr 2 1 >320 2 >320 3 >320 4 >320 15 2.\ Spasmolytisk virkning og antihistaminvirkning.
Disse virkninger måles overfor marsvin ved H. KONZETT og R. ROESSLER’s metode (Naunyn-Schmiedebergs
Arch.exp. Path.Pharmakol. 195, (1940), 71-74) og sam- 20 - me nligne s med virkningerne af theophyllm.
Anæstetiserede og kurariserede marsvin gives kunstigt åndedræt. Det endotracheale tryk optegnes.
Der fremkaldes gentagne bronchiale spasmer ved sucees-25 sive og progressive intravenøse injektioner af henholdsvis serotonin og histamin. Prøveforbindelserne administreres ligeledes intravenøst.
I nedenstående tabel er angivet de doser af forbindelserne (ID 50 i umol/kg), der gennemsnitligt for 30 det totale antal dyr, forhindrer 50% af de fremkaldte bronchospasmer: 18
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Prøveforbindelse Serotonin Histamin
Bieophyllin 10 10 A 7,0 0,23 B 9,44 0,205 5 C 7,3 0,20 D 9,5 0,093 E 5,69 0,39 F 10,0 0,79 G 2,1 0,08 10 1 77 2,1 2 11 3,1 3 >32 5 4 >32 7,8 15 Forbindelserne fremstillet ifølge foreliggende opfindelse har- ingen cholinergisk virkning. Det fremgår af denne tabel, at forbindelserne fremstillet ifølge opfindelsen har en bemærkelsesværdig god virkning med hensyn til bronchospasmer fremkaldt af henholdsvis seroto-20 nin og histamin, med en mere udpræget selektivitet med hensyn til det sidstnævnte. I modsætning hertil viser forbindelserne 1, 2, 3 og 4 (ikke fremstillet ifølge opfindelsen; forbindelser svarende til formlen I, men hvor m = 0) sig at være betydelig mindre virksomme.
25 Ydermere har denne prøve vist, at nogle af for bindelserne administreret i en enkelt dosis har en antihistaminvirkning af lang varighed. Således har f.eks. forbindelse C indgivet intravenøst til marsvin i en dosis på 1 ymol/kg stadig en virkning på 100% O f) efter 5 timers forløb.
3. Almen adfærd af mus (Irwin's test).
Adfærdenstuderes ved hjælp af Irwin's test (se 35 S. IRWIN, "General philosophy and methodology of screening: a multidimensional approach"; Gordon Research Conference on Medicinal Chemistry, August 3-7, 1959, ved Colby Junior College, New London).
19
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Stadigt stigende doser af prøveforbindelserne administreres intraperitonealt til grupper på 3 hanmus (legemsvægt 18 til 22 g) og dyrenes almene adfærd iagttages efter kendte kriterier.
5 Der er benyttet følgende referenceforbindelser:
Hydroxyzin = 2-[2-[4-[(4-chlorphenyl)phenylmethyl]-l-pipe-razinyl]ethoxy] -ethanol.
Oxazepam = 7-chlor-l,3-dihydro-3-hydroxy-5-phenyl-2H- 1,4-benzodiazepin-2-on.
10 Nedenstående tabel angiver de doser (i mg/kg), der bevirker de første tegn på tranquilisering af dyrene.
Prøveforbindelse Tranquiliserende dosis i mg/kg Å 46,2 15 C 138 D 106 E 141 P 505 G 372 20 Hydroxyzin 27
Oxazepam 2,6
Det fremgår af denne tabel, at forbindelserne fremstillet ifølge opfindelsen kun har ringe sedativ 25 virkning i sammenligning med referenceforbindelserne.
Endvidere viser toxiciteten af forbindelserne fremstillet ifølge opfindelsen sig ved denne prøve at være meget lav.
I nedenstående tabel er angivet de lethale 30 doser i mg/kg (to dyr ud af tre) for forbindelser fremstillet ifølge opfindelsen administreret intraperitonealt til mus.
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20
Prøveforbindelse Lethal dosis ϊ rog/ka Λ 277 B 116 C 138 5 D 708 E 942 F 505 G 372
Hvis de to tabeller (tranquiliserende dosis og 10 lethal dosis) sammenlignes, vil det ses, at den sedative virkning for visse forbindelser kun viser sig ved en dosis, der ligger nær ved den lethale dosis.
4. Lethal dosis (LD 50).
15 De her omhandlede forbindelsers lave toxicitet er blevet bekræftet ved måling af LD 50 toxiciteten, når de indgives per os. Således er LD 50 for forbindelse C over for Wistar-rotter 703 mg/kg for hanrotten og 865 mg/kg for hunrotten.
20 Over for mus er LD 50 for den samme forbindelse henholdsvis 600 mg/kg (hanmus) og 752 mg/kg (hunmus) .
5. Posologi og administrering.
De farmaceutiske præparater indeholdende de 25 her omhandlede forbindelser kan administreres oralt, parenteralt eller rektalt. De kan også administreres ved nasal instillation (aerosoler) eller i form af salver eller cremer.
De farmaceutiske præparater, der kan benyttes 30 til oral administrering, kan være faste eller flydende, f.éks. i form af uovertrukne eller overtrukne tabletter, piller, drageer, gelatinékapsler, opløsninger, sirupper og lignende. De præparater, der kan benyttes til parenteral administrering, kan være hvilke som helst af de farmaceutiske præparater, der 35 er kendt til denne administreringsmåde, f.eks. vandige eller olieagtige opløsninger, suspensioner eller emul- 21
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sioner.
Til administrering ad rektal vej benyttes præparaterne indeholdende de her omhandlede forbindelser sædvanligvis i form af suppositorier.
5 De farmaceutiske former, såsom injicerbare opløs ninger, injicerbare suspensioner, tabletter, drops, suppositorier og lignende,fremstilles ved konventionelle farmaceutiske metoder. Forbindelserne blandes med en fast- eller flydende, ikke-toxisk og farmaceutisk accep-10 tabel bærer og eventuelt også med et dispergeringsmid-del, et desintegreringsmiddel, et stabiliseringsmiddel og lignende. Om ønsket er det også muligt at tilsætte konserveringsmidler, sødemidler, farvningsmidler og lignende.
15 Procentmængden af aktiv forbindelse i de farma ceutiske præparater kan varieres indenfor vide grænser alt efter patienten og administreringsmåden og, især, administreringshyppigheden.
Med hensyn til posologien kan den varieres inden-20 for en vidt område af dosisenheder, f.eks. fra 0,5 til 250 mg aktiv forbindelse.
Som eksempel på et præparat indeholdende en forbindelse fremstillet ifølge opfindelsen skal anføres følgende formulering af en gelatinekapsel til admini-25 strering per os:
Forbindelse c 100 mg lactose 67 mg magnesiumstearat 1 mg siliciumdioxid ('iAerosil" / 2 mg
Claims (1)
- DK 155796B Analogifremgangsmåde til fremstilling af 2-[2-[4-(diphenylmethyl)-1-piperaz inyl]ethoxy]-eddikesyrer med den almene formel 5 /—\ X ^»iF( CH2)2-°^ZrCH2"Cvt)H 10 hvori X og X' hver især betegner et hydrogenatom, et halogenatom, en alkoxygruppe med 1-4 carbonatomer eller en trifluormethylgruppe, og 15 m er 1 eller 2, eller ikke toksiske, farmaceutisk acceptable salte deraf, kendetegnet ved, at man, i et vandigt eller vandigt-alkoholisk medium og ved hjælp af en uorganisk base, hydrolyserer et funktionelt derivat af en 20 2-[2-[4-(diphenylmethyl)-1-piperazinyl]ethoxy]-eddikesyre med formlen X _ \ — f\ / \ II 25 /— hvori X, X' og m har de ovenfor angivne betydninger, 30 og Y betegner en gruppe -NH2 eller en gruppe -OR', hvori R' er en lavere alkylgruppe, hvorefter man eventuelt omdanner en således opnået 2-[2-[4-(diphenylmethyl )-1-piperazinyl]ethoxy]-eddikesyre til et ikke-tok-sisk, farmaceutisk acceptabelt salt deraf. 35
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8103768 | 1981-02-06 | ||
| GB8103768 | 1981-02-06 | ||
| GB8110990 | 1981-04-08 | ||
| GB8110990 | 1981-04-08 |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| DK5388A DK5388A (da) | 1988-01-07 |
| DK5388D0 DK5388D0 (da) | 1988-01-07 |
| DK155796B true DK155796B (da) | 1989-05-16 |
| DK155796C DK155796C (da) | 1989-10-09 |
Family
ID=26278356
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK044082A DK154078C (da) | 1981-02-06 | 1982-02-01 | Analogifremgangsmaade til fremstilling af 2-(2-(4-(diphenyl-methyl)-1-piperazinyl)ethoxy)-acetamider eller syreadditionssalte heraf |
| DK005388A DK155796C (da) | 1981-02-06 | 1988-01-07 | Analogifremgangsmaade til fremstilling af 2-(2-(4-(diphenylmethyl)-1-piperazinyl)ethoxy)-eddikesyrer eller farmaceutisk acceptable salte heraf |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK044082A DK154078C (da) | 1981-02-06 | 1982-02-01 | Analogifremgangsmaade til fremstilling af 2-(2-(4-(diphenyl-methyl)-1-piperazinyl)ethoxy)-acetamider eller syreadditionssalte heraf |
Country Status (24)
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|---|---|
| US (1) | US4525358A (da) |
| EP (1) | EP0058146B1 (da) |
| AT (1) | ATE8140T1 (da) |
| AU (1) | AU544066B2 (da) |
| BA (2) | BA97199B1 (da) |
| CA (1) | CA1199918A (da) |
| CY (1) | CY1307A (da) |
| DE (2) | DE10199021I2 (da) |
| DK (2) | DK154078C (da) |
| ES (2) | ES8307776A1 (da) |
| FI (1) | FI75816C (da) |
| GE (1) | GEP20001996B (da) |
| GR (1) | GR75407B (da) |
| HK (1) | HK86485A (da) |
| HU (1) | HU184989B (da) |
| LU (1) | LU90870I2 (da) |
| MY (1) | MY8700279A (da) |
| NL (1) | NL300074I2 (da) |
| NO (2) | NO155805C (da) |
| NZ (1) | NZ199650A (da) |
| PL (2) | PL134969B1 (da) |
| PT (1) | PT74390B (da) |
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Families Citing this family (109)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU562546B2 (en) * | 1981-12-02 | 1987-06-11 | Ferrosan A.B. | 1-piperazinocarboxylates, process for their preparation and pharmaceutical compositions containing them |
| JPS59118765A (ja) * | 1982-12-24 | 1984-07-09 | Fujisawa Pharmaceut Co Ltd | ピペラジン誘導体 |
| GB8320701D0 (en) * | 1983-08-01 | 1983-09-01 | Wellcome Found | Chemotherapeutic agent |
| GB8827391D0 (en) * | 1988-11-23 | 1988-12-29 | Ucb Sa | Process for preparation of 2-(2-(4-((4-chlorophenyl)phenylmethyl)-1-pipera-zinyl)ethoxy)-acetic acid & its dihydrochloride |
| GB8827390D0 (en) * | 1988-11-23 | 1988-12-29 | Ucb Sa | Process for preparation of 2-(2-(4-((4-chlorophenyl)phenylmethyl)-1-pipera-zinyl)ethoxy)-acetic acid & its dihydrochloride |
| US5831066A (en) | 1988-12-22 | 1998-11-03 | The Trustees Of The University Of Pennsylvania | Regulation of bcl-2 gene expression |
| US5057524A (en) * | 1990-02-08 | 1991-10-15 | A. H. Robins Company Incorporated | 4-[diaryl)hydroxymethyl]-1-piperidinealkylcarboxylic acids, salts and esters useful in the treatment of allergic disorders |
| FR2665160A1 (fr) * | 1990-07-26 | 1992-01-31 | Esteve Labor Dr | Nouveaux derives de 1-diphenylmethylpiperazine, leur preparation et leur application en tant que medicaments. |
| EP0885611A3 (en) * | 1992-09-24 | 1999-01-07 | Sepracor, Inc. | Methods and compositions for treating allergic disorders using optically pure (+) cetirizine |
| DE10199031I2 (de) * | 1992-09-24 | 2004-09-23 | Sepracor Inc | Verwendung von (-) Cetrizin zur Behandlung allergischer Rhinitis und Asthma. |
| TW401300B (en) * | 1992-12-25 | 2000-08-11 | Senju Pharma Co | Antiallergic composition for ophthalmic or nasal use |
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| US2899436A (en) * | 1959-08-11 | chjch | ||
| US2630435A (en) * | 1948-09-09 | 1953-03-03 | Burroughs Wellcome Co | N-benzohydryl-n-methyl piperazines and process of preparing same |
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| US3244718A (en) * | 1964-02-17 | 1966-04-05 | Biel John Hans | Piperazine derivatives |
| NL137318C (da) * | 1964-06-09 | |||
| FR2082168A5 (en) * | 1970-03-05 | 1971-12-10 | Aries Robert | (-1-benzhydryl-4-piperazinyl)-alkoxy-alkyl esters of benzoic - or phenyl-alkanoic acids - analgesic, antipyretic, sympathomimetic, |
| FR2081579B1 (da) * | 1970-03-18 | 1973-04-06 | Delalande Sa | |
| BE794804A (fr) * | 1972-02-01 | 1973-05-16 | Crc Ricerca Chim | Procede de preparation de derives de piperazine, et produits obtenus |
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- 1982-02-01 DK DK044082A patent/DK154078C/da active
- 1982-02-01 FI FI820318A patent/FI75816C/fi not_active IP Right Cessation
- 1982-02-03 PL PL1982239687A patent/PL134969B1/pl unknown
- 1982-02-03 PL PL1982234935A patent/PL134903B1/pl unknown
- 1982-02-03 CA CA000395464A patent/CA1199918A/en not_active Expired
- 1982-02-04 YU YU237/82A patent/YU43511B/xx unknown
- 1982-02-04 PT PT74390A patent/PT74390B/pt unknown
- 1982-02-05 NZ NZ199650A patent/NZ199650A/en unknown
- 1982-02-05 AT AT82870006T patent/ATE8140T1/de active
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- 1982-02-05 EP EP82870006A patent/EP0058146B1/fr not_active Expired
- 1982-02-05 DE DE8282870006T patent/DE3260282D1/de not_active Expired
- 1982-02-05 HU HU82362A patent/HU184989B/hu unknown
- 1982-02-05 AU AU80231/82A patent/AU544066B2/en not_active Expired
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- 1983-04-15 ES ES521548A patent/ES521548A0/es active Granted
- 1983-05-17 US US06/496,489 patent/US4525358A/en not_active Expired - Lifetime
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1997
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| CTFF | Application for supplementary protection certificate (spc) filed |
Free format text: CA 2001 00036, 20011107, EXPIRES: 20070201 |
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| PUP | Patent expired |