Compounds are provided having the structure ##SPC1## Wherein n is 1, 2 or 3, m and m' are 0, 1 or 2, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 may be the same or different and can be hydrogen, lower alkyl, halolower alkyl, acyl, lower alkoxy-carbonyl ##EQU1## amido ##EQU2## or lower alkoxyalkylene, X is a straight or branched bivalent aliphatic radical and Y is ##EQU3## These compounds are useful in the treatment of hypertension.
A highly efficient addition of alkyl α-bromocarboxylates to enamines by visible light-induced photoredox catalysis is reported.
报道了一种通过可见光诱导的光氧化还原催化剂高效加成烯胺的烷基α-溴羧酸酯。
Indantetrol derivatives
申请人:E. R. Squibb & Sons, Inc.
公开号:US04092318A1
公开(公告)日:1978-05-30
Compounds are provided having the structure ##STR1## WHEREIN N IS 1, 2 OR 3, M AND M' ARE 0, 1 OR 2, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 may be the same or different and can be hydrogen, lower alkyl, halolower alkyl, acyl, lower alkoxy-carbonyl ##STR2## or lower alkoxyalkylene, X is a straight or branched bivalent aliphatic radical and Y is ##STR3## These compounds are useful in the treatment of hypertension.
Diene intermediates for indantetrols are provided having the structure ##STR1## wherein X is a single bond or a straight or branched chain alkylene group containing from 1 to 10 carbons, Y is ##STR2## wherein R.sub.7 is hydrogen, lower alkyl, arylalkyl or lower alkoxy and ##STR3## is taken together to form a piperidyl or pyrrolidyl radical, R.sub.8 and R'.sub.8 are lower alkyl or monocyclic cycloalkyl, n is 1 to 3, m and m' are 0, 1 or 2.