A new chiratane triterpenoid from swertia chirata

摘要

Reinvestigation of Swetia chirata resulted in the isolation of a new chiratane triterpenoid,chirat-16-en-3#beta#,24-diol,besides known 24-ethylcholest-4-en-3-one and 1,5,8-trihydroxy-3-methoxy-xanthone-8-O-#beta#-D-gluco-pyranoside.The structure of the new triterpenoid has been elucidated on the basis of 2D NMR spectral analyses.