C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
167/211, 260/251
C07D 211/90 (2006.01) C07D 209/48 (2006.01) C07D 401/04 (2006.01) C07D 401/12 (2006.01) C07D 405/04 (2006.01)
Patent
CA 1253865
ABSTRACT OF THE DISCLOSURE Novel dihydropyridines of the formula:- Image (I) and their pharmaceutically acceptable acid addition salts wherein Y is -(CH2)2-, -(CH2)3-, -CH2CH(CH3)- or -CH2C(CH3)2-; R is aryl or heteroaryl; R1 and R2 are each independently C1-C4 alkyl or 2-methoxyethyl; and R3 is hydrogen, C1-C4 alkyl, 2-(C1-C4 alkoxy)ethyl, cyclopropylmethyl, benzyl, or -(CH2)mCOR4 where m is 1, 2 or 3 and R4 is hydroxy, C1-C4 alkoxy or -NR5R6 where R5 and R6 are each independently hydrogen or C1-C4 alkyl, pharmaceutical compositions containing them, and processes for their production. The compounds are particularly useful in the treatment or prevention of a variety of cardiac conditions, e.g. angina pectoris.
423148
Campbell Simon F.
Cross Peter E.
Stubbs John K.
Pfizer Corporation
Smart & Biggar
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