Title: Process for preparing dihydropyridine-5-phosphonic acid cyclic propylene ester
Application Number: 87100286 Application Date: 1987.01.14
Publication Number: 1015756 Publication Date: 1988.01.13
Approval Pub. Date: 1992.11.04 Granted Pub. Date: 1992.11.04
International Classifi-cation: A61K33/42;C07F9/58
Applicant(s) Name: Nissan Chemical Industies Ltd. Address:
Inventor(s) Name: Kiyotomo Seto;Ryozo Sakoda;Sakuya Tanaka
Attorney & Agent: WU HUIZHONG
Abstract:
    A compound of the formula (I): where R1, R2, R3, R4, R5 and R6, which can be identical or different, denotes hydrogen or C2-6-alkyl, one of X1 and X2 denotes nitro, fluorine, chlorine, difluoromethoxy or trifluoromethyl, and denoted as hydrogen, or X1 and X2 both denote chlorine and Y denotes (II) where A denotes C2-C6-alkylene, Ar1 and Ar2, which can be identical or different, denote phenyl which can be substituted by chlorine, fluorine or C1-C3-alkoxy, and m is an integer from 0 to 4, or Y denotes (III) where A, Ar1 and Ar2 denote the same as indicated above, when X1 and X2 both denote chlorine; or a pharmaceutically acceptable salt thereof, or a solvate of the compound or the salt.
Time: 7