US Patent No: 5,364,872

Number of patents in Portfolio can not be more than 2000

Dihydropyridine-3,5-dicarboxylic acid ester derivatives

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Abstract

The diastereoisomer A of a dihydropyridine-3,5-dicarboxylic acid ester derivative is provided as well as its pharmaceutically acceptable acid addition salts. The invention further discloses a process for producing the compounds and their use as medicaments in imparting vasodilating activity.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
YAMANOUCHI PHARMACEUTICAL CO., LTD.TOKYO198

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Arima, Hideki Tokyo, JP 6 27
Isomura, Yasuo Tokyo, JP 29 262
Kojima, Tadao Saitama, JP 14 52
Murakami, Yukiyasu Saitama, JP 10 16
Okada, Minoru Tsukuba, JP 122 755
Takanobu, Kiyoshi Saitama, JP 3 5
Takenaka, Toichi Tokyo, JP 15 102
Tamazawa, Kazuharu Saitama, JP 4 5

Cited Art

Patent Info (Count) # Cites Year
 
BAYER AKTIENGESELLSCHAFT (2)
4,380,547 Dihydropyridine compounds which are substituted in the 4-position by imidazolyl or thiazolyl and their medicinal use 18 1981
4,510,310 1,4-Dihydro-2,6-dimethyl-4-(2'-chlorophenyl)-3,5-dicarboxylic acid,methyl or ethyl,trifluoroethyl ester 24 1982
 
MALESCI ISTITUTO FARMACOBIOLOGICO S.P.A. (1)
4,578,467 Process for the preparation of 1-pyridyl-alkyl-4-aryl piperazines which are useful as antihypertensive compounds, their separation into the respective optical antipodes, and the stereoisomeric compounds so obtained 8 1984
 
YAMANOUCHI PHARMACEUTICAL CO., LTD. (1)
4,220,649 1,4-Dihydropyridine-3,5-dicarboxylic acid ester derivatives 7 1979

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
PFIZER INC. (2)
5,750,707 Separation of the enantiomers of amlodipine via their diastereomeric tartrates 12 1996
6,046,338 Separation of the enantiomers of amlodipine via their diastereomeric tartrates 9 1998
 
ASTELLAS PHARMA INC. (1)
5,463,064 Dihydropyridine-3,5-dicarboxylic acid ester derivatives 1 1994
 
SAMSUNG FINE CHEMICALS CO., LTD. (1)
6,566,525 Preparation of N-substituted-hydroxycycloalkylamine derivatives 3 2001