A new arborinane-type triterpenoid glycoside and three known megastigmanes from the roots of Cyathula officinalis K.C.Kuan

Abstract

In this phytochemical study, a novel arborinane-type triterpenoid glycoside (1) and three known megastigmanes (2–4) were isolated from the dried roots of Cyathula officinalis K.C.Kuan. The structures of these compounds were elucidated using NMR spectroscopy. This is the first report of arborinane-type triterpenoids in the Amaranthaceae family. Among these known megastigmanes, compound 3 was isolated from the Amaranthaceae family for the first time, while compounds 2 and 4 were first reported from the Cyathula genus. The chemotaxonomic significance of these compounds is discussed.