The chemical constituents of Munronia Henryi

Abstract

Six compounds were isolated from the MeOH extract of the whole bodies of Munronia henryi. Their structures were elucidated as sitosterol-3-O-12′,13′-epoxy-9′-oxo-(10′E)-octadecenoate (1), α-D-glucopyranosyl-6′-O-hexadecanoate (2), 4α,7α-aromodendranediol (3), 2β,3β,4β-trihydroxypregnan-16-one (4), 4-O-α-D-psicofuranos-α-D-glucopyranose (5), and glyceryl-1-tetracosanoicate (6) on the basis of spectroscopic methods. Among them 1 was a new sterol carrying an octadecenoyl; 2 and 6 were isolated for the first time from a natural source.

Keywords:

• Meliaceae
• Sitosterol-3--12′,13′-epoxy-9′-oxo-(10′)-octadecenoate
• α--Glucopyranosyl-6′--hexadecanoate

Acknowledgements

The authors are grateful to the National Natural Science Foundation of China (Project No. C30000213), Yunnan Committee of Science and Technology (2000YP23) and The Chinese Academy of Sciences (XiBuZhiGuang Project) for financial support, and members of the analytical group in the Laboratory of Phytochemistry, Kunming Institute of Botany for the spectral measurements.