Triterpenes and alkyl ferulates from Maprounea

摘要

This work describes the phytochemical study of hexane extracts from the stem of Maprounea guianensis. Besides 3-oxo-21a-H-hop-22(29)-en (moretenone), b-sitosterol, lupenone and lupeol, a mixture of dodecosyl, tetracosyl, hexacosyl, octacosyl and triacontyl ferulates was also isolated, as well as 3-b-acetoxy-lup-20(29)-en-28-oic acid, 3b-O-trans-p-coumaroyl-lup-20(29)-en-28-oic acid and 3b-O-trans-p-coumaroyl-urs-12-en-28-oic acid. The structures of these compounds were established by spectroscopic analysis.