Optically active 1,4-dihydropyridine compounds and process...

Details Optically active 1,4-dihydropyridine compounds and process... Optically active 1,4-dihydropyridine compounds and process...

C - Chemistry, Metallurgy

12

P

C12P 41/00 (2006.01) C07D 211/90 (2006.01) C07D 401/12 (2006.01) C12P 17/12 (2006.01)

Patent

CA 2143106

(4R)-3-(Substituted aminoalkyl)oxycarbonyl- 1,4-dihydro-2,6-dimethyl-4-(nitrophenyl)pyridine-5- carboxylic acids can be prepared efficiently, by reacting bis(substituted aminoalkyl) 1,4-dihydro-2,6- dimethyl-4-(nitrophenyl)pyridine-3,5-dicarboxylates with a microorganism capable of asymmetric hydrolysis and belonging to the genus Streptomyces, the genus Paecilomyces, the genus Botryodioplodia, the genus Alternaria or the genus Helminthosporium, or a treated product thereof. The compounds are extremely useful as important intermediates for preparation of pharma- ceuticals useful for the prevention and treatment of angina pectoris, hypertension, etc.

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