Substituted thenoylacetic acid and esters, and pharmaceutically acceptable salts thereof of the following general formula are useful as hypolipidemic agents: ##STR1## wherein Y is selected from oxygen and divalent sulfur; R is selected from a straight or branched saturated hydrocarbon chain containing from 10 to 20 carbon atoms and a straight or branched unsaturated hydrocarbon chain containing from 10 to 20 carbon atoms and from 1 to 4 double bonds; R.sub.1 is selected from hydrogen and an ester group.
以下一般式的取代的
苯乙酸和酯以及其药学上可接受的盐是有用的降脂剂:##STR1## 其中Y是氧和二价
硫中选择的;R是选择自含有10到20个碳原子的直链或支链饱和碳氢链和含有10到20个碳原子和1到4个双键的直链或支链不饱和碳氢链;R.sub.1是氢和酯基中选择的。