CH510629A - 1-Phenoxy-2-hydroxy-3-tert.-butylamino propanes - beta-adrenolytics, hypotensives - Google Patents
1-Phenoxy-2-hydroxy-3-tert.-butylamino propanes - beta-adrenolytics, hypotensivesInfo
- Publication number
- CH510629A CH510629A CH1168070A CH1168070A CH510629A CH 510629 A CH510629 A CH 510629A CH 1168070 A CH1168070 A CH 1168070A CH 1168070 A CH1168070 A CH 1168070A CH 510629 A CH510629 A CH 510629A
- Authority
- CH
- Switzerland
- Prior art keywords
- hydroxy
- tert
- formula
- group
- acid
- Prior art date
Links
- 208000001953 Hypotension Diseases 0.000 title abstract 2
- 208000021822 hypotensive Diseases 0.000 title abstract 2
- 230000001077 hypotensive effect Effects 0.000 title abstract 2
- 235000013849 propane Nutrition 0.000 title 1
- 150000003839 salts Chemical class 0.000 claims abstract description 8
- 150000001875 compounds Chemical class 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 12
- 239000002253 acid Substances 0.000 claims description 9
- 150000007513 acids Chemical class 0.000 claims description 3
- 125000000217 alkyl group Chemical group 0.000 claims description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- NSFIAKFOCAEBER-UHFFFAOYSA-N 2,3-dihydroxy-2,3-bis(4-methylphenyl)butanedioic acid Chemical compound C1=CC(C)=CC=C1C(O)(C(O)=O)C(O)(C(O)=O)C1=CC=C(C)C=C1 NSFIAKFOCAEBER-UHFFFAOYSA-N 0.000 claims description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 2
- 125000005133 alkynyloxy group Chemical group 0.000 claims description 2
- 125000003710 aryl alkyl group Chemical group 0.000 claims description 2
- 125000003118 aryl group Chemical group 0.000 claims description 2
- 239000004202 carbamide Substances 0.000 claims description 2
- 239000001257 hydrogen Substances 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- 125000002560 nitrile group Chemical group 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 claims 2
- 238000001640 fractional crystallisation Methods 0.000 claims 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 abstract 1
- 238000010511 deprotection reaction Methods 0.000 abstract 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 230000000059 bradycardiac effect Effects 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 229940095064 tartrate Drugs 0.000 description 3
- CXWXQJXEFPUFDZ-UHFFFAOYSA-N tetralin Chemical compound C1=CC=C2CCCCC2=C1 CXWXQJXEFPUFDZ-UHFFFAOYSA-N 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- 150000003672 ureas Chemical class 0.000 description 3
- JWZZKOKVBUJMES-UHFFFAOYSA-N (+-)-Isoprenaline Chemical compound CC(C)NCC(O)C1=CC=C(O)C(O)=C1 JWZZKOKVBUJMES-UHFFFAOYSA-N 0.000 description 2
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 229940039009 isoproterenol Drugs 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 2
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 2
- 235000019341 magnesium sulphate Nutrition 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 230000001225 therapeutic effect Effects 0.000 description 2
- WICGEDGLANNLND-UHFFFAOYSA-N 1-(tert-butylamino)-3-(2-prop-2-ynoxyphenoxy)propan-2-ol oxalic acid Chemical compound OC(=O)C(O)=O.CC(C)(C)NCC(O)COC1=CC=CC=C1OCC#C WICGEDGLANNLND-UHFFFAOYSA-N 0.000 description 1
- BMYNFMYTOJXKLE-UHFFFAOYSA-N 3-azaniumyl-2-hydroxypropanoate Chemical compound NCC(O)C(O)=O BMYNFMYTOJXKLE-UHFFFAOYSA-N 0.000 description 1
- YIUIVFFUEVPRIU-UHFFFAOYSA-N 8-chlorotheophylline Chemical compound O=C1N(C)C(=O)N(C)C2=NC(Cl)=N[C]21 YIUIVFFUEVPRIU-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 239000000150 Sympathomimetic Substances 0.000 description 1
- 208000001871 Tachycardia Diseases 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 235000011054 acetic acid Nutrition 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 230000003042 antagnostic effect Effects 0.000 description 1
- 230000003288 anthiarrhythmic effect Effects 0.000 description 1
- 230000003276 anti-hypertensive effect Effects 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 206010003119 arrhythmia Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- HZBOQOXQPRQKTF-UHFFFAOYSA-N bis(4-methylphenyl) 2,3-dihydroxybutanedioate Chemical compound C1=CC(C)=CC=C1OC(=O)C(O)C(O)C(=O)OC1=CC=C(C)C=C1 HZBOQOXQPRQKTF-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000001848 cardiodepressant effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003218 coronary vasodilator agent Substances 0.000 description 1
- 210000004351 coronary vessel Anatomy 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000002526 effect on cardiovascular system Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 231100000566 intoxication Toxicity 0.000 description 1
- 230000035987 intoxication Effects 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 231100001231 less toxic Toxicity 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- CWYZDPHNAGSFQB-UHFFFAOYSA-N n-propylbutan-1-amine Chemical class CCCCNCCC CWYZDPHNAGSFQB-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000012074 organic phase Substances 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- UFNAECVCKNHAKN-UHFFFAOYSA-N pargolol Chemical compound CC(C)(C)NCC(O)COC1=CC=CC=C1OCC#C UFNAECVCKNHAKN-UHFFFAOYSA-N 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000011321 prophylaxis Methods 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001975 sympathomimetic effect Effects 0.000 description 1
- 229940064707 sympathomimetics Drugs 0.000 description 1
- 230000006794 tachycardia Effects 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 150000003899 tartaric acid esters Chemical class 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/13—Amines
- A61K31/135—Amines having aromatic rings, e.g. ketamine, nortriptyline
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/13—Amines
- A61K31/14—Quaternary ammonium compounds, e.g. edrophonium, choline
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/275—Nitriles; Isonitriles
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Medicinal Chemistry (AREA)
- Pharmacology & Pharmacy (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
(A) Cmpds. (I) R = CN or (3-6C) alkinyloxy (B) Salts of (I). beta-Adrenolytics and hypotensives. Dose 1-300 mg. (p.o.), 0.1-25 mg. (parent). (a) + Me3CNHCONHCMe3 Z = or -CHOHCH2Hal. (b) + HalCMe (c) (III) + H2NCMe3 (d) By deprotection of an O- or N-protected deriv. of (I), e.g. an O- or N-acyl or benzyl deriv. (e) (f) (g) (I) (R=NH2) (I) (R=CN).
Description
Verfahren zur Herstellung von neuen racemischen oder optisch aktiven 1-Nitrilophenoxy- oder l Alkinyloxyphenoxy-2-hydroxy.3.tert.butylaminopropanen und deren Salzen
Die Erfindung betrifft ein Verfahren zur Herstellung von neuen l-Phenoxy-2-hydroxy-3-tert. butylaminopropanen der Formel I
EMI1.1
in der R eine Nitrilgruppe (-C=N) oder eine Alkinyloxygruppe mit 3 bis 6 Kohlenstoffatomen (vorzugsweise in 2-Stellung) bedeutet sowie von deren physiologisch verträglichen Salzen, mit therapeutisch wertvollen Eigenschaften an Warmblütern.
Die neuen Verbindungen werden erfindungsgemäss in folgender Weise hergestellt:
Hydrolyse oder Pyrolyse eines Harnstoffderivats der Formel
EMI1.2
in der R4 sowie R,, die gleich oder verschieden sein können, Wasserstoff oder eine Alkylgruppe, vorzugsweise niederes Alkyl, oder eine Aralkyl- oder Arylgruppe, vorzugsweise Phenyl, bedeuten, wobei die Hydrolyse vorteilhaft mittels starker Basen oder Säuren bzw. die Pyrolyse vorzugsweise ohne Katalysator durchgeführt wird.
Die Ausgangsverbindungen sind zum Teil bereits bekannt, zum Teil können sie nach üblichen Verfahren gewonnen werden. Ein Harnstoffderivat der Formel II lässt sich beispielsweise gemäss der in Chem. Abstr.
Vol. 58in. 3337c beschriebenen Methode darstellen, indem man ein Epoxyd der Formel
EMI1.3
mit einem Harnstoffderivat der Formel
EMI1.4
umsetzt.
Die Verbindungen der Formel I besitzen an der -CHOH- Gruppierung ein asymmetrisches Kohlenstoffatom und kommen daher in Form von Racematen wie auch von optisch aktiven Antipoden vor. Die optisch aktiven Verbindungen können erhalten werden, indem man entweder von optisch aktiven Ausgangsverbindungen ausgeht oder die erhaltenen Racemate auf übliche Weise, beispielsweise mittels Dibenzoyl- oder -toluylweinsäure oder 3-Bromcampher-8-sulfonsäure, in ihre optischen Antipoden spaltet.
Die erhaltenen Verbindungen der Formel 1 können gewünschtenfalls in üblicher Weise in ihre physiologisch verträglichen Säureadditionssalze überführt werden. Für die Salzbildung geeignete Säuren sind beispielsweise Salzsäure, Bromwasserstoffsäure, Schwefelsäure, Nilethansulfonsäure, Maleinsäure, Essigsäure, Oxalsäure, Milchsäure, Weinsäure und 8-Chlortheophyllin.
Die Verbindungen der Formel I bzw. deren physiologisch verträglichen Säureadditionssalze haben wertvolle therapeutische, insbesondere ss-adrenolytische Eigenschaften und können daher beispielsweise zur BehandIung oder Prophylaxe von Erkrankungen der Herzkranzgefässe und zur Behandlung von Herzarrhythmien, insbesondere von Tachycardien, an Menschen eingesetzt werden. Auch die blutdrucksenkenden Eigenschaften der Verbindungen sind therapeutisch interessant.
Therapeutisch wertvoll sind dabei insbesondere die Substanzen, bei denen der Rest R in 2-Stellung steht.
Als besonders wirksam hat sich das 1-(2'-Nitrilophenoxy)-2-hydroxy- 3-tert.butyl-aminopropan der Formel
EMI2.1
herausgestellt. Diese Verbindung hat sich sowohl bezüglich der bradycardischen Eigenwirkung als auch bezüglich der isoproterenolantagonistischen Wirkung [Isoproterenol 1 -(3', 4'-Dihydroxyphenyl)-1-hydroxy- 2-isopropylaminoäthan] im Tierexperiment an Meer-.
schweinchen als wesentlich wirksamer und auch weniger toxisch erwiesen als das bekannte 1 -(1 '-Naphtoxy)-2-hydroxy- 3-isopropylaminpropan.
Überdies tritt die bradycardische Wirkung schon bei sehr niedrigen Dosen ein und lässt sich durch höhere Dosierung nicht mehr über einen bestimmten Grenzwert hinaus steigern, was auf ein Fehlen der uner wünschten cardiodepressiven Komponente der brady cardischen Eigenwirkung hindeutet. Die Verbindung zeigt zudem eine starke antiarrhythmische Wirkung bei Strophantin-G-Intoxikationen und eine gute orale Resorption.
Eine bevorzugte Verbindung stellt auch das 1-(2'-Propargyl-oxyphenoxy)-2- hydroxy-3-tert.butylaminopropan dar.
Als Einzeldosis der erfindungsgemäss erhältlichen Verbindungen der Formel I werden 1-300 mg (0016 - 5 mg/kg), vorzugsweise 15 100 mg (0,25-1,66 mg/kg) für die orale Anwendung und 0,1-25 mg (0,00;20,4 mgl kg) für die parenterale Anwedung am Menschen vorgeschlagen.
Die galenische Verarbeitung der Verbindungen der Formel I zu den üblichen Anwendungsformen wie Lösungen, Emulsionen, Tabletten, Dragees oder Depotformen kann in bekannter Weise unter Heranziehung der dafür gebräuchlichen galenischen Hilfsstoffe erfolgen. Die erfindungsgemäss erhältlichen Verbindungen können auch in Kombination mit anderen pharmakodynamisch wirksamen Stoffen wie beispielsweise herz- oder kreislaufwirksamen Sympathicomimetica oder Coronardilatatoren. angewendet werden.
Die folgenden Beispiele erläutern die Erfindung, ohne sie zu beschränken:
Beispiel I
1-(2'-Nitrilophenoxy)-2-hydroxy b-tert.butylarninopropan HCI 3,5 g (0,011 Mol) N.N-Di-tert.butyl-N- [(2hydrolxy-3-- nitrilophenoxy)-propyl]-harnstoff werden in 10 ml Tetralin unter Zugabe einer Spatelspitze LiCI zwei Stunden auf 2000 C erhitzt. Die abgekühlte Lösung wird sodann mit verdünnter HC1 ausgeschüttelt. Die wässerige Phase wird nach Abtrennung mit NaOH alkalisch gestellt und die sich abscheidende Base in Äther aufgenommen. Die Ätherlösung wird abgetrennt, über MgSO4 getrocknet und im Vakuum eingeengt. Der Rücktsand (2,2 g) wird in wenig Äthanol gelöst. ätherische HCI zugegeben und das ausfallende Hydrochlorid abgesaugt.
Nach nochmaligem Umfüllen aus Äthanol unter Zugabe von Äther schmilzt das Hydrochlorid bei 157 bis 1610 C.
Analog werden erhalten: 1-(3'-Nitrilophenoxy)-2-hydroxy- 3 -tert.butylaminopropanoxalat, Fp. 154" bis 157 C.
1 -(4'-Nitrilophenoxy)-2-hydroxy 3-tert.hutylanunopropan. HC1, Fp.1870bis1890C 1 -(2'-Propargyloxyphenoxy)-2-hydroxy3-tert.butylaminopropan-oxalat, Fp. 132" bis 1340 C
Beispiel 2 - (2'-Nitrilophenoxy)-2-hydroxy-
3-tert.butylaminopropan HCl (Darstellung durch Racematentrennung) 24,8 g (0,1 Mol) 1 -(2'-Nitrilophenoxy)-2-hydroxy- 3 -tert.butyl-aminopropan (racemisch) werden in 100 ml absolutem Methanol gelöst und mit einer Lösung von 38,6 g (0,1 Mol) (-)-Dip-toluyl-weinsäure in 150 ml absolutem Methanol vereinigt. Nach mehrstündigem Stehen bei Raumtemperatur wird die Lösung filtriert und drei Tage bei 200 C stehen gelassen. Das langsam auskristallisierende Dip-toluyltartrat wird sodann abgesaugt und nochmals in gleicher Weise umkristallisiert.
Es werden 18,2 g (-)-1-(2'-Nitrilophenoxy)-2-hydroxy- 3-tert.butylaminopropan-di-ptoluyl-tartrat vom Fp. 135 bis 1370 C (Zersetzung) erhalten.
[a]20t = -90,50 (in Methanol).
6 g dieses Tartrates werden in 100 ml Äther und 50 ml NaOH geschüttelt. Die organische Phase wird abgetrennt und über MgSO4 getrocknet. Nach Filtration wird ätherische HCI zugegeben, wobei Kristallisation eintritt. Es werden 2,4 g Hydrochlorid vom Fp.
161" bis 164 C gewonnen.
[a]D20-- +14,70 (in Methanol).
Aus der Mutterlauge (methanolisch) des obengenannten Di-p-toluyltartrates kann nach Verdampfen des Methanols im Vakuum der rechtsdrehende Antipode erhalten und durch Behandlung mit NaOH die Base gewonnen werden. Sie lässt sich mit Hilfe von ätherischer HCI aus ätherischer Lösung als Hydrochlorid fällen.
Process for the preparation of new racemic or optically active 1-nitrilophenoxy- or 1-alkynyloxyphenoxy-2-hydroxy.3.tert.butylaminopropanes and their salts
The invention relates to a process for the preparation of new l-phenoxy-2-hydroxy-3-tert. butylaminopropanes of the formula I
EMI1.1
in which R denotes a nitrile group (-C = N) or an alkynyloxy group with 3 to 6 carbon atoms (preferably in the 2-position) as well as their physiologically acceptable salts, with therapeutically valuable properties in warm-blooded animals.
According to the invention, the new compounds are prepared in the following manner:
Hydrolysis or pyrolysis of a urea derivative of the formula
EMI1.2
in which R4 and R ,, which can be the same or different, denote hydrogen or an alkyl group, preferably lower alkyl, or an aralkyl or aryl group, preferably phenyl, the hydrolysis advantageously using strong bases or acids or the pyrolysis preferably without Catalyst is carried out.
Some of the starting compounds are already known and some can be obtained by customary processes. A urea derivative of the formula II can be prepared, for example, according to the method described in Chem. Abstr.
Vol. 58in. 3337c represent the method described by an epoxy of the formula
EMI1.3
with a urea derivative of the formula
EMI1.4
implements.
The compounds of the formula I have an asymmetric carbon atom on the -CHOH group and therefore occur in the form of racemates as well as optically active antipodes. The optically active compounds can be obtained either by starting from optically active starting compounds or by splitting the racemates obtained into their optical antipodes in a customary manner, for example using dibenzoyl- or -toluyltartaric acid or 3-bromocamphor-8-sulfonic acid.
The compounds of formula 1 obtained can, if desired, be converted into their physiologically tolerable acid addition salts in the customary manner. Acids suitable for salt formation are, for example, hydrochloric acid, hydrobromic acid, sulfuric acid, nilethanesulfonic acid, maleic acid, acetic acid, oxalic acid, lactic acid, tartaric acid and 8-chlorotheophylline.
The compounds of formula I or their physiologically acceptable acid addition salts have valuable therapeutic, in particular β-adrenolytic properties and can therefore be used, for example, for the treatment or prophylaxis of diseases of the coronary arteries and for the treatment of cardiac arrhythmias, in particular tachycardias, in humans. The antihypertensive properties of the compounds are also of therapeutic interest.
Substances in which the radical R is in the 2-position are particularly valuable therapeutically.
1- (2'-Nitrilophenoxy) -2-hydroxy-3-tert-butyl-aminopropane of the formula has proven to be particularly effective
EMI2.1
exposed. This compound has proven itself both in terms of the bradycardic intrinsic effect and in terms of the isoproterenol antagonistic effect [isoproterenol 1 - (3 ', 4'-dihydroxyphenyl) -1-hydroxy-2-isopropylaminoethane] in animal experiments on marine.
Piglets proved to be much more effective and also less toxic than the well-known 1 - (1 '-naphtoxy) -2-hydroxy-3-isopropylamine propane.
In addition, the bradycardic effect occurs even at very low doses and can no longer be increased beyond a certain limit value through higher doses, which indicates a lack of the undesired cardiodepressant component of the bradycardic intrinsic effect. The compound also shows a strong antiarrhythmic effect in strophantine-G intoxications and good oral absorption.
A preferred compound is also 1- (2'-propargyl-oxyphenoxy) -2-hydroxy-3-tert-butylaminopropane.
The single dose of the compounds of the formula I obtainable according to the invention is 1-300 mg (0016-5 mg / kg), preferably 15-100 mg (0.25-1.66 mg / kg) for oral use and 0.1-25 mg (0.00; 20.4 mgl kg) suggested for parenteral use on humans.
The pharmaceutical processing of the compounds of the formula I into the customary use forms such as solutions, emulsions, tablets, coated tablets or depot forms can be carried out in a known manner using the pharmaceutical auxiliaries customary for this purpose. The compounds obtainable according to the invention can also be used in combination with other pharmacodynamically active substances, such as, for example, cardiovascular sympathomimetics or coronary dilators. be applied.
The following examples illustrate the invention without restricting it:
Example I.
1- (2'-Nitrilophenoxy) -2-hydroxy b-tert-butylaminopropane HCI 3.5 g (0.011 mol) NN-di-tert-butyl-N- [(2hydrolxy-3-nitrilophenoxy) propyl] urea are heated to 2000 C for two hours in 10 ml of tetralin with the addition of a spatula tip of LiCl. The cooled solution is then extracted with dilute HC1. After separation, the aqueous phase is made alkaline with NaOH and the base which separates out is taken up in ether. The ether solution is separated off, dried over MgSO4 and concentrated in vacuo. The back sand (2.2 g) is dissolved in a little ethanol. ethereal HCI added and the precipitated hydrochloride sucked off.
After another decanting from ethanol with the addition of ether, the hydrochloride melts at 157 to 1610 C.
The following are obtained analogously: 1- (3'-Nitrilophenoxy) -2-hydroxy-3-tert-butylaminopropane oxalate, melting point 154 "to 157 C.
1 - (4'-nitrilophenoxy) -2-hydroxy 3-tert-butylanunopropane. HC1, m.p. 1870 to 1890C 1 - (2'-propargyloxyphenoxy) -2-hydroxy-3-tert-butylaminopropane oxalate, m.p. 132 "to 1340 ° C
Example 2 - (2'-nitrilophenoxy) -2-hydroxy-
3-tert-butylaminopropane HCl (representation by racemate separation) 24.8 g (0.1 mol) of 1- (2'-nitrilophenoxy) -2-hydroxy-3-tert-butylaminopropane (racemic) are dissolved in 100 ml of absolute methanol dissolved and combined with a solution of 38.6 g (0.1 mol) (-) - dip-toluyl-tartaric acid in 150 ml of absolute methanol. After standing for several hours at room temperature, the solution is filtered and left to stand at 200 ° C. for three days. The dip-toluyl tartrate, which slowly crystallizes out, is then filtered off with suction and recrystallized again in the same way.
18.2 g of (-) - 1- (2'-nitrilophenoxy) -2-hydroxy-3-tert-butylaminopropane-di-ptoluyl tartrate of melting point 135 ° to 1370 ° C. (decomposition) are obtained.
[a] 20t = -90.50 (in methanol).
6 g of this tartrate are shaken in 100 ml of ether and 50 ml of NaOH. The organic phase is separated off and dried over MgSO4. After filtration, ethereal HCl is added, whereupon crystallization occurs. There are 2.4 g of hydrochloride of melting point.
161 "to 164 C gained.
[a] D20- +14.70 (in methanol).
The dextrorotatory antipode can be obtained from the mother liquor (methanolic) of the above-mentioned di-p-toluyl tartrate after evaporation of the methanol in vacuo and the base can be obtained by treatment with NaOH. It can be precipitated as hydrochloride from ethereal solution with the help of ethereal HCI.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19671593782 DE1593782C3 (en) | 1967-06-15 | 1967-06-15 | 1-Nitrilophenoxy- 2- hydroxy -3-tertbutylaminopropane, process for their preparation and pharmaceutical preparations containing them |
| CH876668A CH495950A (en) | 1967-06-15 | 1968-06-13 | 1-Phenoxy-2-hydroxy-3-tert.-butylamino propanes - beta-adrenolytics, hypotensives |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH510629A true CH510629A (en) | 1971-07-31 |
Family
ID=25703747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH1168070A CH510629A (en) | 1967-06-15 | 1968-06-13 | 1-Phenoxy-2-hydroxy-3-tert.-butylamino propanes - beta-adrenolytics, hypotensives |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH510629A (en) |
-
1968
- 1968-06-13 CH CH1168070A patent/CH510629A/en not_active IP Right Cessation
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