DK143403B - Analogifremgangsmaade til fremstilling af 8-(1h-tetrazol-5-yl)-11h-pyrido (2,1-b) quinazolin-11-oner eller salte deraf - Google Patents
Analogifremgangsmaade til fremstilling af 8-(1h-tetrazol-5-yl)-11h-pyrido (2,1-b) quinazolin-11-oner eller salte deraf Download PDFInfo
- Publication number
- DK143403B DK143403B DK482877AA DK482877A DK143403B DK 143403 B DK143403 B DK 143403B DK 482877A A DK482877A A DK 482877AA DK 482877 A DK482877 A DK 482877A DK 143403 B DK143403 B DK 143403B
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- DK
- Denmark
- Prior art keywords
- pyrido
- quinazoline
- tetrazol
- salts
- ones
- Prior art date
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- 238000000034 method Methods 0.000 title description 6
- -1 1H-TETRAZOL-5-YL Chemical class 0.000 title description 4
- 238000002360 preparation method Methods 0.000 title description 2
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 14
- 150000001875 compounds Chemical class 0.000 description 13
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 12
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 6
- 241000700159 Rattus Species 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 4
- 150000002825 nitriles Chemical class 0.000 description 4
- ZIJAZUBWHAZHPL-UHFFFAOYSA-N 6-chloropyridine-3-carboxamide Chemical compound NC(=O)C1=CC=C(Cl)N=C1 ZIJAZUBWHAZHPL-UHFFFAOYSA-N 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 125000000217 alkyl group Chemical group 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- YYROPELSRYBVMQ-UHFFFAOYSA-N 4-toluenesulfonyl chloride Chemical compound CC1=CC=C(S(Cl)(=O)=O)C=C1 YYROPELSRYBVMQ-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- PXIPVTKHYLBLMZ-UHFFFAOYSA-N Sodium azide Chemical compound [Na+].[N-]=[N+]=[N-] PXIPVTKHYLBLMZ-UHFFFAOYSA-N 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000000443 aerosol Substances 0.000 description 2
- 125000003545 alkoxy group Chemical group 0.000 description 2
- 208000026935 allergic disease Diseases 0.000 description 2
- RWZYAGGXGHYGMB-UHFFFAOYSA-N anthranilic acid Chemical class NC1=CC=CC=C1C(O)=O RWZYAGGXGHYGMB-UHFFFAOYSA-N 0.000 description 2
- 230000003266 anti-allergic effect Effects 0.000 description 2
- 208000006673 asthma Diseases 0.000 description 2
- 229960000265 cromoglicic acid Drugs 0.000 description 2
- VLARUOGDXDTHEH-UHFFFAOYSA-L disodium cromoglycate Chemical compound [Na+].[Na+].O1C(C([O-])=O)=CC(=O)C2=C1C=CC=C2OCC(O)COC1=CC=CC2=C1C(=O)C=C(C([O-])=O)O2 VLARUOGDXDTHEH-UHFFFAOYSA-L 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 208000030603 inherited susceptibility to asthma Diseases 0.000 description 2
- 238000001953 recrystallisation Methods 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- NFSBKHUHALQOAO-UHFFFAOYSA-N 1h-pyrido[2,1-b]quinazoline Chemical compound C1=CC=CN2C=C3CC=CC=C3N=C21 NFSBKHUHALQOAO-UHFFFAOYSA-N 0.000 description 1
- UMKSAURFQFUULT-UHFFFAOYSA-N 2-Amino-5-methoxybenzoic acid Chemical compound COC1=CC=C(N)C(C(O)=O)=C1 UMKSAURFQFUULT-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
- QCQCHGYLTSGIGX-GHXANHINSA-N 4-[[(3ar,5ar,5br,7ar,9s,11ar,11br,13as)-5a,5b,8,8,11a-pentamethyl-3a-[(5-methylpyridine-3-carbonyl)amino]-2-oxo-1-propan-2-yl-4,5,6,7,7a,9,10,11,11b,12,13,13a-dodecahydro-3h-cyclopenta[a]chrysen-9-yl]oxy]-2,2-dimethyl-4-oxobutanoic acid Chemical compound N([C@@]12CC[C@@]3(C)[C@]4(C)CC[C@H]5C(C)(C)[C@@H](OC(=O)CC(C)(C)C(O)=O)CC[C@]5(C)[C@H]4CC[C@@H]3C1=C(C(C2)=O)C(C)C)C(=O)C1=CN=CC(C)=C1 QCQCHGYLTSGIGX-GHXANHINSA-N 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- QBEIZCZOJLXENV-UHFFFAOYSA-N 9h-pyrido[2,1-b]quinazoline Chemical compound C1=CC=CC2=CN3CC=CC=C3N=C21 QBEIZCZOJLXENV-UHFFFAOYSA-N 0.000 description 1
- 206010027654 Allergic conditions Diseases 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- QDHHCQZDFGDHMP-UHFFFAOYSA-N Chloramine Chemical compound ClN QDHHCQZDFGDHMP-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 108010093488 His-His-His-His-His-His Proteins 0.000 description 1
- 241000124008 Mammalia Species 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000538 analytical sample Substances 0.000 description 1
- 239000000924 antiasthmatic agent Substances 0.000 description 1
- 230000000890 antigenic effect Effects 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000005457 ice water Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- 125000000896 monocarboxylic acid group Chemical group 0.000 description 1
- 238000007911 parenteral administration Methods 0.000 description 1
- 229910000028 potassium bicarbonate Inorganic materials 0.000 description 1
- 235000015497 potassium bicarbonate Nutrition 0.000 description 1
- 239000011736 potassium bicarbonate Substances 0.000 description 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
- 229940086066 potassium hydrogencarbonate Drugs 0.000 description 1
- 230000003389 potentiating effect Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 125000003831 tetrazolyl group Chemical group 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
- C07D471/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains two hetero rings
- C07D471/04—Ortho-condensed systems
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P11/00—Drugs for disorders of the respiratory system
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D491/00—Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00
- C07D491/12—Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00 in which the condensed system contains three hetero rings
- C07D491/14—Ortho-condensed systems
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- Organic Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medicinal Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pharmacology & Pharmacy (AREA)
- Veterinary Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Immunology (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Plural Heterocyclic Compounds (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
Description
i 143403 o
Den foreliggende opfindelse Angår en analogifremgangsmåde til fremstilling af hidtil ukendte 8-(lH-tetra-' zol-5-yl)-HH-pyrido [2,l-b]quinazolin-ll-oner med den al mene formel c 4 5 6 5 , N ^ »2- ,
2 Ιςχ. 11 N Λ M
10 0 " "·' 1 2 hvor R og R hver for gig betyder hydrogen, C^_4 alkyl, 01-4 alkyloxy, halogen, hydroxy eller tilsammen betyder me-thylendioxy, eller farmaceutisk acceptable salte deraf med syrer eller baser.
15 Disse forbindelser har anti-allergiske virkninger og er anvendelige som anti-astmatiske midler.
1 2 I ovenstående definitioner for R og R indeholder alkylgrupperne og alkyldelen af alkoxygrupperne 1-4 carbonatomer, f.eks, grupperne methyl, ethyl, isopropyl, 2Q butyl og isobutyl. Ved halogen skal forstås fluor, chlor, brom og iod.
I de foretrukne forbindelser har substituenteroe 1 2 R og R følgende betydninger: R1 og R2 = H, ,r R1 = 2-OCH,, R2 = H, A 1^2 = 2-CH3, R * H, R1, R2 = 2,3-di-OCH3, R1 = 2-OH, R2 =» H.
Forbindelserne med den almene formel I har vist 30 sig at formindske allergisk respons på antigenpåvirkning ved inhibering af antistof-antigenreaktioner i pattedyr såsom rotter. Ved testning i overensstemmelse med fremgangsmåden ifølge Herzig [Immunopharmocology, M.i3.
Rosenthale and H.C. Mansmann, John Wiley and Son, N.Y., 35 1975] inhiberer disse forbindelser allergiske respons el ler passiv cutananafylakse (PCA) i rotter, når de indgives oralt, parenteralt eller ved hjælp af aerosol i en dosis 2 143403
O
på 0,001-20 mg/kg. Følgelig er der indikation for anvendelse af disse forbindelser ved behandling af allergiske tilstande såsom bronkieastma. Generelt foreslås til voksne mennesker en dosis på 0,001-20 mg/kg indgivet oralt, 5 parenteralt eller ved hjælp af en aerosol 1-3 gange dag lig til lindring af bronkieastma. Som ved antiallergibehandling skal dosis reguleres under hensyntagen til individuelle forhold men inden for ovennævnte rammer.
De omhandlede forbindelser har kraftigere virk- 10 ning og er oralt mere effektive end kendte forbindelser så som croirto lynnatrium.
Ved ovennævnte PCA-test har det således eksempelvis vist sig, at cromolynnatrium er inaktiv ved oral indgift, hvorimod de omhandlede forbindelser er aktive ved 15 oral indgift. Ved parenteral indgift har de omhandlede forbindelser endvidere langt kraftigere virkning end crorao-lynnatrium. Dette fremgår af de i den efterfølgende tabel I anførte forsøgsresultater.
20
Tabel I
0 OCH.CHOHCH.O O ΕΕ,50~·Ρ(:Α (rotter) 1 I 2 2i I - ; — 62 25 I I- !' 1-2 mg/kg inaktiv
NaOOC COONa
Intal (Fisons) ·< 'Xv' ^ > 0/5 mg/kg 0,5 mg/kg 30 I li 1 B I // o hn // 35 3 143403 0 ED,-n'PCA (rotter)
bU
N
^ γ λ\ il Λ ,Λ ^ Χ·*-' '''"Ν 0,04 mg/kg ikke bestemt 5 CH3 P I // O HN // ^N7
YyVY
ίο I
J N N
/ X^Y^X.^ C®3° P // 0,005 mg/kg 0,05 mg/kg O HN // ^N7 15
Fremgangsmåden ifølge opfindelsen er ejendommelig ved, at en substitueret agthranilsyre med den almene formel X / NH, 20 »^Yr
(I II
1/*^ ' COOH
1 2 hvori R og R er som ovenfor anført, kondenseres med 1 25 ækvivalent 6-chlornicotinamid med formlen
I I III
cqnh2 30 til dannelse af det tilsvarende substituerede pyrido- [2,l-b]qyinazolinon-8-carboxamid med den almene formel R1/ || 2 0 0 143403 4 som under anvendelse af p-toluensulfonylchlorid i pyridin og dimethylformamid dehydratiseres til det tilsvarende nitril, der omdannes til en tetrazolylforbindelse med den almene formel I ved omsætning med NaN^, NH^Cl og dimethylformamid, hvorpå den 5 dannede forbindelse om ønsket overføres i et salt deraf.
I overensstemmelse med det ovenfor anførte fremstilles disse forbindelser i tre trin: a) en passende substitueret anthranilsyre kondenseres med et ækvivalent 6-chlornicotinamid i eddikesyre 10 til dannelse af det tilsvarende substituerede pyrido[2,l- -b]quinazolinon-8-carboxamidmellemprodukt, som b) dehydratiseres til nitrilderivatet under anvendelse af p-toluensulfonchlorid i pyridin og DMF, og c) tetrazolylproduktet fås ud fra nitrilet under 15 anvendelse af NaN^, NH^Cl og DMF.
De tilsvarende salte fremstilles ved at omsætte moderforbindelsen med en passende base, f.eks. natrium-hydrogencarbonat eller kaliumhydrogencarbonat, eller med en syre, f.eks. saltsyre, hydrogenbromidsyre eller 20 svovlsyre på i og for sig kendt måde.
Fremgangsmåden ifølge opfindelsen illustreres nærmere i følgende eksempel.
Eksempel 25 a) 8-Carboxamido-2-methoxy-ll-oxo-ll(IH)- -pyrido[2,1-b]quinazolin.
En blanding af 27,o g (161 mmol) 5-methoxy--anthranilsyre, 25,0 g (160 mmol) 6-chlornicotinamid og 500 ml ethanol indeholdende 15 ml koncentreret HCl opvar-30 mes med tilbagesvaling i 24 timer. Blandingen afkøles til 0°, og det dannede faste bundfald frafiltreres, hvorved fås 34,0 g (69,5%) af det rå hydrochloridsalt. Dette omkrystalliseres to gange fra pyridin, hvorved fås en analytisk prøve med smp. 329-332° (sønderdeling.) 35 0 5 1A3403 b) 8-Cyano-2-methoxy-ll-oxo-ll(h)-pyrido[2,1—b]-quinazolin.
En opløsning af 1,2 liter pyridin, 300 ml DMF, 7,46 g (39,4 mmol) p.toluensulfonylchlorid og 7,45 g 5 (27,6 mmol) 8-carboxamido-2-methoxy-ll-oxo-ll(H)-pyrido- [2,1-b]quinazolin opvarmes til 100° i 42 timer. Blandingen afkøles og hældes i 4 liter af en blanding af is og vand, hvorpå der syrnes til pH-værdien 1 med koncentreret saltsyre. Det dannede faste stof isoleres, og der fås 5,0 10 g (72,2%) med smp. 273--280° (sønderdeling). Ved omkrystal-· lisation fra pyridin fås det analytisk rene nitril med smp-281-285° (sønderdeling).
c) 2-Methoxy-8-(ia-tetrazol-5-yl)-11-oxo-ll(H)pyrido- 15 [2,1-b]quinazolin.
En blanding af 3,00 g (12 mmol) 8-cyano-2-methoxy- 11-oxo-ll(H)-pyrido[2,1-b]quinazolin, 2,22 g (34,2 mmol)
NaN_, 1,83 g (34,2 mmol) NH^Cl og 250 ml DMF opvarmes til 115° i 20 timer. Blandingen afkøles, hældes i 1,5 liter 20 af en blanding af is og vand og syrnes med koncentreret saltsyre. Det dannede faste stof isoleres, og der fås 2,93 g (83%) med smp. 279-299° (sønderdeling). Ved omkrystallisation fra pyridin fås den analytisk rene prøve i en mængde på 2,25 g (64%) med smp. 302-304° (sønderdeling).
25 Analogt med den ovenfor beskrevne fremgangsmåde fremstilles de nedenfor i tabel II anførte forbindelser.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK532480A DK532480A (da) | 1976-11-01 | 1980-12-12 | 8-carboxamido eller cyano-11h-pyrido(2,1-b)-quinazolin-11-oneer til anvendelse som mellemprodukter ved fremstilling af de tilsvarende 8-tetrazol-5-ylforbindelser |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US73787876 | 1976-11-01 | ||
| US05/737,878 US4066767A (en) | 1976-11-01 | 1976-11-01 | 8-(1H-Tetrazol-5-yl)-11H-pyrido[2,1-b]quinazolin-11-ones and method of treating bronchial asthma using them |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK482877A DK482877A (da) | 1978-05-02 |
| DK143403B true DK143403B (da) | 1981-08-17 |
| DK143403C DK143403C (da) | 1981-12-21 |
Family
ID=24965667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK482877A DK143403C (da) | 1976-11-01 | 1977-10-31 | Analogifremgangsmaade til fremstilling af 8-(1h-tetrazol-5-yl)-11h-pyrido(2,1-b)quinazolin-11-oner eller salte deraf |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US4066767A (da) |
| JP (1) | JPS5356699A (da) |
| AU (1) | AU515283B2 (da) |
| BE (1) | BE860319A (da) |
| CA (1) | CA1197844A (da) |
| CH (1) | CH638205A5 (da) |
| DE (1) | DE2742708C2 (da) |
| DK (1) | DK143403C (da) |
| ES (1) | ES463092A1 (da) |
| FR (1) | FR2369279A1 (da) |
| IE (1) | IE46258B1 (da) |
| LU (1) | LU78415A1 (da) |
| NL (1) | NL7711969A (da) |
| SE (1) | SE437374B (da) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2557425C2 (de) * | 1975-12-19 | 1987-03-19 | C.H. Boehringer Sohn, 6507 Ingelheim | 11-Oxo-11-H-pyrido[2,1-b]-chinazolin-2-carbonsäure und ihre Salze, Verfahren zu ihrer Herstellung und Arzneimittel |
| US4348396A (en) * | 1978-01-23 | 1982-09-07 | Hoffmann-La Roche Inc. | Substituted 11-oxo-11H-pyrido[2,1-b]quinazolines and method of inhibiting allergic reactions with them |
| DE2845766A1 (de) * | 1978-10-18 | 1980-04-30 | Schering Ag | Pyrido eckige klammer auf 2,1-b eckige klammer zu -chinazolinon-derivate, ihre herstellung und verwendung |
| ES8406476A1 (es) * | 1982-04-29 | 1984-07-01 | Erba Farmitalia | Procedimiento para preparar derivados cicloalifaticos condensados de pirido(1,2-a)pirimidinas sustituidas. |
| US4551460A (en) * | 1982-05-10 | 1985-11-05 | Hoffmann-La Roche Inc. | Pyrido[2,1-b]quinazoline derivatives useful as agents for treatment of allergic conditions and vascular disorders involving thrombosis |
| IL69274A (en) * | 1982-08-05 | 1986-08-31 | Erba Farmitalia | (substituted amino)derivatives of 3-benzylidene-pyrrolo(2,1-b)quinazolin-9-ones and 6-benzylidene-pyrido(2,1-b)quinazolin-11-ones,their preparation and pharmaceutical compositions containing them |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3982000A (en) * | 1973-01-19 | 1976-09-21 | Sandoz, Inc. | Alkyl-substituted-tricyclic quinazolinones as bronchodilators |
| US3966965A (en) * | 1973-03-23 | 1976-06-29 | American Home Products Corporation | Oxamic acid derivatives for the prevention of immediate type hypersensitivity reactions |
| US4012387A (en) * | 1975-09-18 | 1977-03-15 | Warner-Lambert Company | Benzo-[g]pyrido[2,1-b]quinazolinones |
| US4033961A (en) * | 1975-10-07 | 1977-07-05 | Warner-Lambert Company | Pyrido[2-1-b]quinazolin-ones and their methods of preparation |
-
1976
- 1976-11-01 US US05/737,878 patent/US4066767A/en not_active Expired - Lifetime
-
1977
- 1977-09-22 DE DE2742708A patent/DE2742708C2/de not_active Expired
- 1977-09-22 IE IE1939/77A patent/IE46258B1/en unknown
- 1977-09-26 AU AU29126/77A patent/AU515283B2/en not_active Expired
- 1977-10-10 ES ES77463092A patent/ES463092A1/es not_active Expired
- 1977-10-24 CA CA000289376A patent/CA1197844A/en not_active Expired
- 1977-10-26 FR FR7732215A patent/FR2369279A1/fr active Granted
- 1977-10-28 LU LU78415A patent/LU78415A1/xx unknown
- 1977-10-28 BE BE6046198A patent/BE860319A/xx not_active IP Right Cessation
- 1977-10-31 JP JP12979377A patent/JPS5356699A/ja active Pending
- 1977-10-31 NL NL7711969A patent/NL7711969A/xx not_active Application Discontinuation
- 1977-10-31 DK DK482877A patent/DK143403C/da not_active IP Right Cessation
- 1977-11-01 CH CH1331677A patent/CH638205A5/de not_active IP Right Cessation
- 1977-11-01 SE SE7712308A patent/SE437374B/sv unknown
Also Published As
| Publication number | Publication date |
|---|---|
| IE46258B1 (en) | 1983-04-20 |
| JPS5356699A (en) | 1978-05-23 |
| CH638205A5 (de) | 1983-09-15 |
| AU515283B2 (en) | 1981-03-26 |
| SE7712308L (sv) | 1978-05-02 |
| DE2742708A1 (de) | 1978-05-03 |
| AU2912677A (en) | 1979-04-05 |
| NL7711969A (nl) | 1978-05-03 |
| FR2369279A1 (fr) | 1978-05-26 |
| US4066767A (en) | 1978-01-03 |
| DE2742708C2 (de) | 1982-04-22 |
| LU78415A1 (da) | 1978-01-31 |
| CA1197844A (en) | 1985-12-10 |
| ES463092A1 (es) | 1978-12-01 |
| DK143403C (da) | 1981-12-21 |
| BE860319A (fr) | 1978-04-28 |
| IE46258L (en) | 1978-05-01 |
| DK482877A (da) | 1978-05-02 |
| FR2369279B1 (da) | 1981-01-23 |
| SE437374B (sv) | 1985-02-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PBP | Patent lapsed |