Chemical Constituents from Bletilla ochracea Schltr.

摘要

To study the chemical constituents in Bletilla ochracea Schltr.,repeated column chromatographies and preparative TLC were used for the isolation of compounds,and spectroscopic techniques(NMR,IR,UV and MS)were used for their structural identification.Seven compounds,2,7-bis(allyloxy)-5-methoxy-3-methyl-9,10-dihydrophenanthrene(1),gastrodin(2),gastrodigenin(3),β-sitosterol(4),stigmasterol(5),4-hydroxybenzaldehyde(6),and daucosterol(7)were obtained from the roots of B.ochracea Schltr.Compound 1 is structurally illustrated as a novel compound,and the others are isolated from the title plant for the first time.