NO135589B - - Google Patents
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- Publication number
- NO135589B NO135589B NO721190A NO119072A NO135589B NO 135589 B NO135589 B NO 135589B NO 721190 A NO721190 A NO 721190A NO 119072 A NO119072 A NO 119072A NO 135589 B NO135589 B NO 135589B
- Authority
- NO
- Norway
- Prior art keywords
- water
- general formula
- compound
- denotes
- mol
- Prior art date
Links
- 239000000975 dye Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 3
- 238000004043 dyeing Methods 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- 125000003277 amino group Chemical group 0.000 claims description 2
- -1 aminoazo compound Chemical class 0.000 claims description 2
- 125000003118 aryl group Chemical group 0.000 claims description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- RUFPHBVGCFYCNW-UHFFFAOYSA-N 1-naphthylamine Chemical compound C1=CC=C2C(N)=CC=CC2=C1 RUFPHBVGCFYCNW-UHFFFAOYSA-N 0.000 description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 3
- 239000001632 sodium acetate Substances 0.000 description 3
- 235000017281 sodium acetate Nutrition 0.000 description 3
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- IQFVPQOLBLOTPF-HKXUKFGYSA-L congo red Chemical compound [Na+].[Na+].C1=CC=CC2=C(N)C(/N=N/C3=CC=C(C=C3)C3=CC=C(C=C3)/N=N/C3=C(C4=CC=CC=C4C(=C3)S([O-])(=O)=O)N)=CC(S([O-])(=O)=O)=C21 IQFVPQOLBLOTPF-HKXUKFGYSA-L 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 2
- XTTIQGSLJBWVIV-UHFFFAOYSA-N 2-methyl-4-nitroaniline Chemical compound CC1=CC([N+]([O-])=O)=CC=C1N XTTIQGSLJBWVIV-UHFFFAOYSA-N 0.000 description 1
- JWAZRIHNYRIHIV-UHFFFAOYSA-N 2-naphthol Chemical compound C1=CC=CC2=CC(O)=CC=C21 JWAZRIHNYRIHIV-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 150000008049 diazo compounds Chemical class 0.000 description 1
- 239000003480 eluent Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- CWOMTHDOJCARBY-UHFFFAOYSA-N n,n,3-trimethylaniline Chemical compound CN(C)C1=CC=CC(C)=C1 CWOMTHDOJCARBY-UHFFFAOYSA-N 0.000 description 1
- AUAWVTIYJGOJNU-UHFFFAOYSA-N n-hydrazinylidenenitramide Chemical group NN=N[N+]([O-])=O AUAWVTIYJGOJNU-UHFFFAOYSA-N 0.000 description 1
- 238000004816 paper chromatography Methods 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
- C07D401/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
- C07D401/04—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings directly linked by a ring-member-to-ring-member bond
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C247/00—Compounds containing azido groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D211/00—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
- C07D211/04—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D211/80—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having two double bonds between ring members or between ring members and non-ring members
- C07D211/84—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having two double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen directly attached to ring carbon atoms
- C07D211/90—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Plural Heterocyclic Compounds (AREA)
- Hydrogenated Pyridines (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Pyridine Compounds (AREA)
- Coloring (AREA)
Description
Fremgangsmåte til fremstilling av i vann uoppløselige triazo-farvestoffer.
Foreliggende oppfinnelse angår en fremgangsmåte til fremstilling av en ny klasse triazo-farvestoffer som er uopplø-
selige i vann og tilsvarer den følgende generelle formel (A):
i hvilken X betegner en hydroxylgruppe eller en disubstituert aminogruppe og Ar betegner en aromatisk kjerne som even-tuelt kan være substituert med alkylgrupper.
Det er funnet at farvestoffer av denne
klasse er særlig egnet til farvning av kull-vannstoffpolymerisater og polymerisater av halogensubstituerte kullvannstoffer.
Fremgangsmåten ifølge oppfinnelsen
er karakterisert ved at 1 mol av en aminoazoforbindelse med den generelle formel:
(i hvilken Ar har den ovenfor angitte be-tydning) diazoteres og kobles med 1 mol av en forbindelse med den generelle formel
i hvilken Ar og X har de ovenfor angitte betydninger.
Blant farvestoffene med den generelle formel (A) har følgende vist seg å være særlig egnet til farvning av polyolefinma-terialer:
I det følgende beskrives som eksempler to utførelsesformer for fremgangsmåten ifølge oppfinnelsen.
Eksempel 1.
15,2 g 5-nitro-2-amino-toluen diazoteres på vanlig måte i 150 g vann og 35 g saltsyre (spesifikk vekt 1,17) ved raskt å tilsette 7 g natriumnitrit i 20 g vann, idet man holder temperaturen ved 0° C. Den erhodte diazoforbindelse bringes i en opp-løsning som består av 15 g a-naftylamin, 15 g saltsyre og 350 g vann. Derefter tilsettes gradvis en 50 pst.'s oppløsning av krystallinsk natriumacetat inntil reaksjonsblandingen ikke viser sur reaksjon overfor kongorød indikator. Det erholdte nitro-amino-monoazo farvestoff frafilte-reres og vaskes, hvorpå det suspenderes i
300 g vann, gjøres alkalisk med ammoniakk og behandles ved 80° C med ca. 14 g na-triumsulfid. Det erholdte diamino-monoazo farvestoff frafiltreres, vaskes og om-krystalliseres fra 70 pst.'s alkohol. Man får 13,8 g (4-amino-2-metyl) <l-azo-4> 1-naftylamin med smp. 167° C.
Denne forbindelse suspenderes i 300 g vann og 35 g konsentrert saltsyre og diazoteres med 7 g natriumacetat i 20 g vann, idet man holder temperaturen mellom 0 og 5° C ved forsiktig tilsetning av is.
Den herved erholdte bis-diazo-azo-forbindelse tilsettes forsiktig til en oppløs-ning av 15,5 g (3-naftol i 200 g vann, 14 g natriumhydroxydoppløsning (36° Bé) og 35 g 30 pst.'s ammoniakk. Når koblingen er avsluttet frafiltreres det erholdte triazo-farvestoff, vaskes til det er nøytralt og tør-res. Etter pulverisering er det et mørkt pulver. Farvestoff et har formelen:
Dets smp. er 185° C.
Ved kromatografering (elueringsmid-lets organiske del: butanol, eddiksyre og vann i mengdeforholdet 4:1:5) viser farvestoffet en ensartet flekk som ikke for-andrer farve med saltsyre og heller ikke med natriumhydroxydoppløsning.
Eksempel 2.
13,8 g (4-amino-2-metyl)<l-azo-4> 1-naftylamin erholdt ved å gå frem som
angitt i foregående eksempel diazoteres således som beskrevet i dette og tilsettes der-på til en oppløsning av 14,5 g N,N-dimetyl-m-toluidin i 200 g vann og 75 g konsentrert saltsyre (spesifikk vekt 1,17). Umiddelbart derefter tilsettes reaksjonsblandingen en 50 pst.'s vandig natriumacetatoppløsning
inntil den ikke viser sur reaksjon overfor kongorød-indikator. Det således erholdte triazo-farvestoff frafiltreres, vaskes til det er nøytralt og tørres. Det er et mørkebrunt pulver med følgende formel:
Farvestoffets smp. er 160° C.
Ved papirkromatografi viser dette farvestoff en ensartet fiolettrød flekk som blir
blåaktig med saltsyre men uforandret med
natriumhydroxydoppløsning.
Claims (1)
- Fremgangsmåte til fremstilling av triazo-farvestoffer som er uoppløselige i vann og egnet til farvning av polymerisater av kullvannstoffer eller halogensubstituerte kullvannstoffer og som tilsvarer den generelle formeli hvilken X betegner en hydroxylgruppe eller en disubstituert aminogruppe og Ar betegner en aromatisk kjerne som eventu- elt kan være substituert med alkylgrupper, karakterisert ved at 1 mol av en aminoazoforbindelse med den generelle formel (i hvilken Ar har den ovenfor angitte be-tydning) diazoteres og kobles med 1 mol av en forbindelse med den generelle formel H Ar X i hvilken Ar og X har de ovenfor angitte betydninger. I
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2117571A DE2117571C3 (de) | 1971-04-10 | 1971-04-10 | Unsymmetrische 1,4-Dihydropyridin-33-dicarbonsäureester, Verfahren zu ihrer Herstellung sowie ihre Verwendung als Arzneimittel |
Publications (2)
Publication Number | Publication Date |
---|---|
NO135589B true NO135589B (no) | 1977-01-17 |
NO135589C NO135589C (no) | 1977-04-27 |
Family
ID=5804433
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO721190A NO135589C (no) | 1971-04-10 | 1972-04-07 |
Country Status (27)
Country | Link |
---|---|
US (1) | US3799934A (no) |
JP (1) | JPS5529989B1 (no) |
AT (1) | AT316551B (no) |
AU (1) | AU464663B2 (no) |
BE (1) | BE781878A (no) |
BG (1) | BG22818A3 (no) |
CA (1) | CA921035A (no) |
CH (1) | CH567472A5 (no) |
CS (1) | CS175429B2 (no) |
DD (2) | DD102077A5 (no) |
DE (1) | DE2117571C3 (no) |
DK (1) | DK132496C (no) |
ES (1) | ES401614A1 (no) |
FI (1) | FI55186C (no) |
FR (1) | FR2132830B1 (no) |
GB (1) | GB1358951A (no) |
HK (1) | HK18877A (no) |
HU (1) | HU164705B (no) |
IE (1) | IE36265B1 (no) |
IL (1) | IL39171A (no) |
LU (1) | LU65138A1 (no) |
NL (1) | NL164031C (no) |
NO (1) | NO135589C (no) |
PL (1) | PL84499B1 (no) |
RO (2) | RO62643A (no) |
SE (1) | SE371823B (no) |
ZA (1) | ZA722348B (no) |
Families Citing this family (102)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3917622A (en) * | 1972-03-06 | 1975-11-04 | Bayer Ag | 2-Amino-1,4-dihydropyridine derivatives |
US3919246A (en) * | 1972-03-06 | 1975-11-11 | Bayer Ag | Process for preparing 2-amino-1,4-dihydropyridine derivates |
US3917619A (en) * | 1972-03-06 | 1975-11-04 | Bayer Ag | 2-Amino-4,5-dihydropyridine derivatives |
US3935223A (en) * | 1972-03-06 | 1976-01-27 | Bayer Aktiengesellschaft | 2-Amino-1,4-dihydropyridine derivatives |
US4001258A (en) * | 1972-03-06 | 1977-01-04 | Bayer Aktiengesellschaft | 2-amino-1,4-dihydropyridine derivatives |
DE2210674C3 (de) * | 1972-03-06 | 1981-09-24 | Bayer Ag, 5090 Leverkusen | 2-Amino-6-methyl-1,4-dihydropyridine, Verfahren zu ihrer Herstellung und sie enthaltende Arzneimittel |
DD106832A5 (no) * | 1972-03-06 | 1974-07-05 | ||
DE2218644C3 (de) * | 1972-04-18 | 1982-08-19 | Bayer Ag, 5090 Leverkusen | Basische Ester von 1,4-Dihydropyridinen, Verfahren zu ihrer Herstellung sowie ihre Verwendung als Arzneimittel |
US3989708A (en) * | 1972-08-31 | 1976-11-02 | Bayer Aktiengesellschaft | 2-Amino-1,4-dihydropyridine derivatives |
DE2242786A1 (de) * | 1972-08-31 | 1974-03-14 | Bayer Ag | Verfahren zur herstellung von neuen 2-amino-1,4-dihydropyridinen mit einer carbonylfunktion sowie ihre verwendung als arzneimittel |
DE2248150A1 (de) * | 1972-09-30 | 1974-04-04 | Bayer Ag | Dihydropyridinpolyester, verfahren zu ihrer herstellung sowie ihre verwendung als arzneimittel |
GB1409865A (en) * | 1973-02-13 | 1975-10-15 | Science Union & Cie | Dihydropyridines derivatives their preparation and pharmaceu tical compositions containing them |
CH607848A5 (no) * | 1974-06-04 | 1978-11-30 | Bayer Ag | |
DE2508181A1 (de) * | 1975-02-26 | 1976-09-09 | Bayer Ag | 1,4-dihydropyridincarbonsaeurearal- kylester, verfahren zu ihrer herstellung sowie ihre verwendung als arzneimittel |
FR2320750A1 (fr) * | 1975-08-12 | 1977-03-11 | Hexachimie | Dihydro-1,4 pyridines et leur application therapeutique |
US4154839A (en) * | 1975-11-05 | 1979-05-15 | Bayer Aktiengesellschaft | 2,6-Dimethyl-3-carboxymethoxy-4-(2-nitrophenyl)-5-carbisobutoxy-1,4-dihydropyridine |
DE2549568C3 (de) * | 1975-11-05 | 1981-10-29 | Bayer Ag, 5090 Leverkusen | 2,6-Dimethyl-3-methoxycarbonyl-4- (2'-nitrophenyl)-1,4-dihydropyridin-5- carbonsäureisobutylester, mehrere Verfahren zu seiner Herstellung sowie ihn enthaltende Arzneimittel |
DE2650013C3 (de) * | 1976-10-30 | 1981-04-02 | Bayer Ag, 5090 Leverkusen | 1.4-Dihydro-2.6-dimethyl-4-(3-nitrophenyl)-3.5-pyridindicarbonsäureisopropyl-(2-propoxy-äthyl)-ester, Verfahren zu seiner Herstellung sowie ihn enthaltende Arzneimittel |
DE2658183A1 (de) * | 1976-12-22 | 1978-07-06 | Bayer Ag | In 2-position substituierte 1,4- dihydropyridin-derivate, verfahren zu ihrer herstellung sowie ihre verwendung als arzneimittel |
GB1579818A (en) * | 1977-06-07 | 1980-11-26 | Yamanouchi Pharma Co Ltd | Nifedipine-containing solid preparation composition |
JPS55301A (en) * | 1978-02-14 | 1980-01-05 | Yamanouchi Pharmaceut Co Ltd | 1,4-dihydropyridine-3,5-dicarboxylic ester derivative and its preparation |
DE2815578C2 (de) * | 1978-04-11 | 1986-01-16 | Bayer Ag, 5090 Leverkusen | Neue pharmazeutische Verwendung von Nimodipin |
SE429652B (sv) * | 1978-06-30 | 1983-09-19 | Haessle Ab | 2.6-dimetyl-4-(2.3-diklorfenyl)-1.4-dihydropyridin-3.5-dikarboxylsyra-3-metylester-5-etylester |
DE2837477A1 (de) * | 1978-08-28 | 1980-03-13 | Bayer Ag | Sila-substituierte 1,4-dihydropyridin- derivate |
DE2841667A1 (de) * | 1978-09-25 | 1980-04-10 | Bayer Ag | Fluorhaltige 1,4-dihydropyridine, verfahren zu ihrer herstellung sowie ihre verwendung als arzneimittel |
DE2949464A1 (de) * | 1978-12-18 | 1980-06-26 | Sandoz Ag | Benzoxadiazole und benzothiadiazole, ihre herstellung und verwendung |
DE2927933A1 (de) * | 1979-07-11 | 1981-02-05 | Hoechst Ag | Acetylacetoxyalkyl-allyl-ether, ihre herstellung und verwendung |
DE2935451A1 (de) * | 1979-09-01 | 1981-03-19 | Bayer Ag, 5090 Leverkusen | Optisch aktive 1,4-dihydropyridine, verfahren zu ihrer herstellung und ihre verwendung als arneimittel |
DE3023820A1 (de) * | 1980-06-25 | 1982-01-14 | Bayer Ag, 5090 Leverkusen | 4,4-disubstituierte spiro-1,4-dihydropyridine, ein verfahren zu ihrer herstellung, sowie ihre verwendung als zwischenprodukt |
DE3042769A1 (de) * | 1980-11-13 | 1982-06-09 | Bayer Ag, 5090 Leverkusen | C-3 verknuepfte 1,4-dihydropyridine, ihre verwendung in arzneimitteln und verfahren zu ihrer herstellung |
US4365063A (en) * | 1981-08-31 | 1982-12-21 | American Home Products Corporation | Antihypertensive agents |
US4321384A (en) * | 1981-02-27 | 1982-03-23 | American Home Products Corporation | Antihypertensive agents |
NZ201395A (en) * | 1981-07-30 | 1987-02-20 | Bayer Ag | Pharmaceutical compositions containing 1,4-dihydropyridines and certain of these dihydropyridines |
DE3130041A1 (de) * | 1981-07-30 | 1983-02-17 | Bayer Ag, 5090 Leverkusen | Dihydropyridine mit positiv inotroper wirkung, neue verbindungen, ihre verwendung in arzneimitteln und verfahren zu ihrer herstellung |
MX7567E (es) * | 1981-12-23 | 1989-10-27 | Yamanouchi Pharma Co Ltd | Procedimiento para recubrir nicardipina de accion prolongada |
JPS58159490A (ja) * | 1982-02-23 | 1983-09-21 | Nikken Kagaku Kk | 1,4−ジヒドロピリジン化合物 |
DE3208628A1 (de) * | 1982-03-10 | 1983-09-22 | Bayer Ag, 5090 Leverkusen | Neue verbindungen, verfahren zu ihrer herstellung sowie ihre verwendung als arzneimittel |
DE3212736A1 (de) * | 1982-04-06 | 1983-10-13 | Bayer Ag, 5090 Leverkusen | Verwendung von dihydropyridinen in arzneimitteln mit salidiuretischer wirkung |
DE3222367A1 (de) * | 1982-06-15 | 1983-12-15 | Bayer Ag, 5090 Leverkusen | Verwendung von 1,4-dihydropyridinen in antiarteriosklerotika und deren herstellung |
US4656181A (en) * | 1982-11-24 | 1987-04-07 | Cermol S.A. | Esters of 1,4-dihydropyridines, processes for the preparation of the new esters, and medicaments containing the same |
DE3248548A1 (de) * | 1982-12-29 | 1984-07-05 | Heinrich Mack Nachf., 7918 Illertissen | Acylderivate von 1,4:3,6-dianhydro-hexiten, verfahren zu ihrer herstellung und ihre verwendung als arzneimittel |
DE3316510A1 (de) * | 1983-05-06 | 1984-11-08 | Bayer Ag | Parenterale formulierung von nimodipin, ein verfahren zu ihrer herstellung sowie ihre verwendung bei der bekaempfung von erkrankungen |
GB8314744D0 (en) * | 1983-05-27 | 1983-07-06 | Fujisawa Pharmaceutical Co | 2 6-disubstituted-1 4-dihydropyridine derivative |
IE57810B1 (en) * | 1984-03-27 | 1993-04-21 | Delagrange Lab | 1,4-dihydropyridine derivatives,their preparation and their use |
DE3419131A1 (de) * | 1984-05-23 | 1985-11-28 | Bayer Ag, 5090 Leverkusen | Dihydropyridinkombinationspraeparate und verfahren zu ihrer herstellung |
US4794111A (en) * | 1984-05-23 | 1988-12-27 | Bayer Aktiengesellschaft | Dihydropyridine preparations containing β-blockers |
DE3419128A1 (de) * | 1984-05-23 | 1985-11-28 | Bayer Ag, 5090 Leverkusen | Dihydropyridinpraeparate und verfahren zu ihrer herstellung |
US4757071A (en) * | 1984-12-14 | 1988-07-12 | Nisshin Flour Milling Co., Ltd. | 1,4-dihydropyridine derivatives, and pharmaceutical compositions containing same, useful for treating cardiovascular diseases |
DE3542794A1 (de) * | 1985-12-04 | 1987-06-11 | Bayer Ag | Antihypertensives kombinationspraeparat |
US4771057A (en) * | 1986-02-03 | 1988-09-13 | University Of Alberta | Reduced pyridyl derivatives with cardiovascular regulating properties |
US4758669A (en) * | 1986-05-05 | 1988-07-19 | Radiation Oncology Center Research And Development Corporation | 4-(nitrone aryl) dihydropyridines |
EP0311053A3 (en) * | 1987-10-06 | 1991-05-08 | Banyu Pharmaceutical Co., Ltd. | Ameliorant of cerebral circulation and optical isomer of nb-818, processes for its production and its use |
DE3741540A1 (de) * | 1987-12-08 | 1989-06-22 | Bayer Ag | Verfahren zur herstellung von unsymmetrischen dihydropyridinen |
US5571827A (en) * | 1990-03-13 | 1996-11-05 | Sepracor Inc. | Methods and compositions for treating hypertension, angina and other disorders using optically pure s(-) nitrendipine |
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-
1971
- 1971-04-10 DE DE2117571A patent/DE2117571C3/de not_active Expired
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1972
- 1972-03-09 CH CH346172A patent/CH567472A5/xx not_active IP Right Cessation
- 1972-03-27 AU AU40455/72A patent/AU464663B2/en not_active Expired
- 1972-04-06 BG BG020164A patent/BG22818A3/xx unknown
- 1972-04-06 FI FI946/72A patent/FI55186C/fi active
- 1972-04-07 NL NL7204693.A patent/NL164031C/xx not_active IP Right Cessation
- 1972-04-07 IE IE454/72A patent/IE36265B1/xx unknown
- 1972-04-07 ZA ZA722348A patent/ZA722348B/xx unknown
- 1972-04-07 AT AT301672A patent/AT316551B/de not_active IP Right Cessation
- 1972-04-07 DD DD168272*A patent/DD102077A5/xx unknown
- 1972-04-07 NO NO721190A patent/NO135589C/no unknown
- 1972-04-07 DK DK172372A patent/DK132496C/da not_active IP Right Cessation
- 1972-04-07 JP JP3450472A patent/JPS5529989B1/ja active Pending
- 1972-04-07 LU LU65138D patent/LU65138A1/xx unknown
- 1972-04-07 DD DD162147A patent/DD99371A5/xx unknown
- 1972-04-07 US US00242239A patent/US3799934A/en not_active Expired - Lifetime
- 1972-04-08 PL PL1972154622A patent/PL84499B1/pl unknown
- 1972-04-08 ES ES401614A patent/ES401614A1/es not_active Expired
- 1972-04-10 CA CA139295A patent/CA921035A/en not_active Expired
- 1972-04-10 RO RO197275177A patent/RO62643A/ro unknown
- 1972-04-10 CS CS2377A patent/CS175429B2/cs unknown
- 1972-04-10 BE BE781878A patent/BE781878A/xx not_active IP Right Cessation
- 1972-04-10 IL IL7239171A patent/IL39171A/xx unknown
- 1972-04-10 RO RO197270487A patent/RO60479A/ro unknown
- 1972-04-10 SE SE7204606A patent/SE371823B/xx unknown
- 1972-04-10 FR FR7212512A patent/FR2132830B1/fr not_active Expired
- 1972-04-10 HU HUBA2729A patent/HU164705B/hu unknown
- 1972-04-10 GB GB1646272A patent/GB1358951A/en not_active Expired
-
1977
- 1977-04-20 HK HK188/77A patent/HK18877A/xx unknown
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