Halocyclopropyl substituted phenoxyalkanoic acids and esters thereof, having hypocholesteremic activity are prepared via several alternative synthetic approaches, involving as the key reactions interaction of a substituted phenylalkene with a carbene source to introduce the halocyclopropyl moiety, and reaction of a substituted phenol with chloroform and a lower-alkanone in the presence of base, or with a lower-alkyl .alpha.-bromo-alkanoate, to form the phenoxyalkanoic acid moiety.
含有降
胆固醇活性的卤代环丙基取代的苯氧基烷酸及其
酯类,可以通过几种替代合成方法制备,其中关键反应包括取代苯基烯烃与卡宾源相互作用以引入卤代环丙基基团,以及在碱存在下,取代
酚与
氯仿和较低的烷酮,或与较低烷基α-
溴代烷酸酯反应,形成苯氧基烷酸基团。