Substituted azetidinone compounds useful as hypocholesterolemic agents

Abstract

Substituted azetidinone hypocholesterolemic agents of the formula ##STR1## or a pharmaceutically acceptable salt thereof, wherein: Ar.sup.1 is R.sup.3 -substituted aryl; Ar.sup.2 is R.sup.4 -substituted aryl; Ar.sup.3 is R.sup.5 -substituted aryl; Y and Z are independently --CH.sub.2 --, --CH(lower alkyl)-- or --C(dilower alkyl)--; A is --O--, --S--, --S(O)-- or --S(O).sub.2 --; R.sup.1 is --OR.sup.6, --O(CO)R.sup.6, --O(CO)OR.sup.9 or --O(CO)NR.sup.6 R.sup.7 ; R.sup.2 is hydrogen, lower alkyl or aryl; or R.sup.1 and R.sub.2 together are .dbd.O; q is 1, 2 or 3; p is 0, 1,2, 3 or 4; R.sup.5 is 1-3 substitutes independently selected from --OR.sup.6, --O(CO)R.sup.6, --O(CO)OR.sup.9, --O(CH.sub.2).sub.1-5 OR.sup.9, --O(CO)NR.sup.6 R.sup.7, --NR.sup.6 R.sup.7, --NR.sup.6 (CO)R.sup.7, --NR.sup.6 (CO)OR.sup.9, --NR.sup.6 (CO)NR.sup.7 R.sup.8, --NR.sup.6 SO.sub.2 -lower alkyl, --NR.sup.6 SO.sub.2 -aryl, --CONR.sup.6 R.sup.7, --COR.sup.6, --SO.sub.2 NR.sup.6 R.sup.7, S(O).sub.0-2 -alkyl, S(O).sub.0-2 -aryl, --O(CH.sub.2).sub.1-10 -COOR.sup.6, --O(CH.sub.2).sub.0-10 CONR.sup.6 R.sup.7, o-halogeno, m-halogeno, o-lower alkyl, m-lower alkyl, -(lower alkylene)-COOR.sup.6 and --CH.dbd.CH--COOR.sup.6 ; R.sup.3 and R.sup.4 are 1-3 substituents independently selected from R.sup.5, hydrogen, p-lower alkyl, aryl, --NO.sub.2, CF.sub.3 and p-halogeno; R.sup.6, R.sup.7 and R.sup.8 are hydrogen, lower alkyl, aryl or aryl-substituted lower alkyl; and R.sup.9 is lower alkyl, aryl or aryl-substituted lower alkyl; are disclosed, as well as a method of lowering serum cholesterol by administering said compounds, pharmaceutical compositions containing them, the combination of a substituted azetidinone and a cholesterol biosynthesis inhibitor for the treatment and prevention of atherosclerosis, novel intermediates and methods for preparing said intermediates.

Dependencies are inferred from the claim text.