Compounds of the formula ##EQU1## wherein R.sub.1 is lower alkyl or aryl, R.sub.2 is hydrogen or, together with R.sub.1, ethylene, and R.sub.3 is straight or branched alkyl of 8 to 22 carbon atoms; The compounds have useful therapeutic, dermatological and cosmetic properties.
公式为##EQU1##的化合物,其中R.sub.1为低碳基或芳基,R.sub.2为氢或与R.sub.1一起构成
乙烯,R.sub.3为8至22个碳原子的直链或支链烷基;这些化合物具有有用的治疗、皮肤学和化妆品属性。