Substituted 2,2-dimethyl-omega-phenoxy alkanoic acids and esters, process for their preparation and pharmaceutical compositions containing them

摘要

2,2-Dimethyl- omega -phenoxy-alkanoic acid derivs. of formula (I) and their isomers and salts are new. In (I), X = O, S or a single bond; A = single bond or 1-9C (un)branched hydrocarbon gp. opt. contg. double bond or O atom; B = 1-9C (un)branched hydrocarbon gp.; R = H or 1-6C alkyl opt. substd. by 1 or 2 OH gps.; R1 = H or Me and R3 = H; or R3 = H and R1 = single bond forming double bond with hydrocarbon gp. A; or R1+R3 = CH2 or CH2CH2 except where X = single bond; R2, R6 = H or Me; R4, R5 = 1-6C alkyl; R7 = H or protecting gp. (e.g. COMe, CH2OEt or benzyl); and Z = H, halo, 1-5C alkyl or 1-5C alkoxy.