Lanostane-type triterpenoids from Diospyros discolor.
作者信息
Chen Chiy-Rong, Cheng Chao-Wen, Pan Min-Hsiung, Liao Yun-Wen, Tzeng Chih-Ying, Chang Chi-I
机构信息
Institute of Molecular Biology, National Chung Hsing University, Taichung, Taiwan.
出版信息
Chem Pharm Bull (Tokyo). 2007 Jun;55(6):908-11. doi: 10.1248/cpb.55.908.
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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