Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1987-04-27
1988-10-11
Gerstl, Robert
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C07D41706
Patent
active
047772590
ABSTRACT:
Disclosed are a compound of the formula ##STR1## wherein R.sub.1 is lower alkyl, A is a group of the formula ##STR2## (in which R.sub.3 is hydrogen or lower alkyl) or methylene, and R.sub.2 is hydrogen or a group of the formula --(CH.sub.2).sub.n COOH (in which n is an integer of 1 to 6) or a salt of the derivative, and preparation thereof. The compounds have an excellent aldose reductase inhibitory action.
Honna Takaji
Ogawa Kazuo
Gerstl Robert
Taiho Pharmaceutical Company Limited
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