Isolation and Structure Elucidation of Triterpenoidal Constituents from the Leaves of Rhododendron brachycarpum

Campanulin, ${\alpha}-amyrin$, ${\beta}-amyrin$, uvaol, simiarenol, ursolic acid and oleanolic acid were isolated from the ethyl acetate fraction of the leaves of Rhododendron brachycarpum and their structures were identified by spectroscopic and chemical methods.