Heteroacetic acid derivatives

Abstract

Disclosed are compounds of formula ##STR1## wherein R is hydroxy, esterified hydroxy or etherified hydroxy; R.sub.1 is halogen, trifluoromethyl or lower alkyl; R.sub.2 is halogen, trifluoromethyl or lower alkyl; R.sub.3 is halogen, trifluoromethyl, lower alkyl, aryl, aryl-lower alkyl, cycloalkyl or cycloalkyl-lower alkyl; or R.sub.3 is the radical ##STR2## wherein R.sub.8 is hydrogen, lower alkyl, aryl, cycloalkyl, aryl-lower alkyl or cycloalkyl-lower alkyl; R.sub.9 is hydroxy or acyloxy; R.sub.10 represents hydrogen or lower alkyl; or R.sub.9 and R.sub.10 together represent oxo; R.sub.4 is hydrogen, halogen, trifluoromethyl or lower alkyl; X is --NR.sub.7, S or O; W is O or S; R.sub.5 represents hydrogen, lower alkyl or aryl-lower alkyl;and R.sub.6 represents hydrogen; or R.sub.5 and R.sub.6 together represent oxo provided that X represents --NR.sub.7; R.sub.7 represents hydrogen or lower alkyl; Z represents carboxyl, carboxyl derivatized as a pharmaceutically acceptable ester or as a pharmaceutically acceptable amide; and pharmaceutically acceptable salts thereof; which are useful as hypocholesteremic agents.

Dependencies are inferred from the claim text.