Terpenoids from Croton cajucara

摘要

The bark of Croton cajucara afforded two novel clerodane-type furano-diterpenes, t-cajucarin B and sacacarin, in addition to the previously isolated nor-clerodane diterpenes t-crotonin, t-dehydrocrotonin, cajucarin B and cajucarinolide. The triterpene acetyl aleuritolic acid, was also obtained. Structure elucidation was achieved by spectroscopic measurements including 2D-NMR experiments.