The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 18, 1990
Filed:
Aug. 10, 1988
Applicant:
Inventors:
Tetsuji Miyano, Nagoya, JP;
Kunio Suzuki, Nagoya, JP;
Ryosuke Ushijima, Okazaki, JP;
Susumu Nakagawa, Okazaki, JP;
Assignee:
Banyu Pharmaceutical Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
546249 ; 546187 ; 546194 ; 546268 ; 546272 ; 546273 ; 546278 ; 546279 ; 546281 ; 546321 ; 540484 ; 540488 ; 540492 ; 544 78 ; 544124 ; 544357 ; 544360 ;
Abstract
A process for preparing a 2-carbamoylocxyalkyl-1,4-dihydropyridine derivative represented by the general formula: ##STR1## which comprises: (a) reacting a 3-amino-3-carbamoyloxyalkylacrylic acid derivative represented by the general formula: ##STR2## with a benzylidene compound represented by the general formula: ##STR3## (b) reacting the 3-amino-3-carbamoyloxyalkylacrylic acid derivative of the general formula II with an aldehyde compound represented by the general formula: ##STR4## and a .beta.-keto-ester compound represented by the general formula: