Study on Chemical Constituents of Lagotis Yunnanensis

摘要

Lagotis yunnanensis is a folkloric medicine in China. In order to investigate its effective components, the 95% ethanol extract of whole plant of L. yunnanensis was separated and purified with chromatographic method. Eight compounds were obtained and identified as luteolin (1), chrysoeriol (2), apigenin-7-methyl ether (3), 3, 4-dimethoxycinnamyl-D-glucopyranoside (4), verbascoside (5), cistanoside D (6), 2-O-β-D-glucopyranospylcucurbitacin D (7) and arvenin I (8) by spectroscopic methods. Compounds 1～3 are flavonoids, compounds 4～6 are phenylpropanoids and compounds 7 and 8 are triterpenoids. Compounds 4～8 have been obtained from this species for the first time.