Lanostane-type triterpenoids from Diospyros discolor.

Chem Pharm Bull (Tokyo) 2007 Jun;55(6):908-11

Institute of Molecular Biology, National Chung Hsing University, Taichung, Taiwan.

Four new lanostane-type triterpenes, 24-ethyl-3beta-methoxylanost-9(11)-en-25-ol (1), 3beta-methoxy-24-methylenelanost-9(11)-en-25-ol (2), 3beta-methoxy-25-methyl-24-methylenelanost-9(11)-en-21-ol (3) and 3beta-methoxy-24-methyllanosta-9(11),25-dien-24-ol (4) together with three known triterpenes, betulinaldehyde, betulinic acid methyl ester, and ursaldehyde have been isolated from the methanol extract of the twigs of Diospyros discolor. The structures of those new compounds were elucidated by spectroscopic methods.

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http://dx.doi.org/10.1248/cpb.55.908DOI Listing
June 2007
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