A pentanortriterpenoid with a novel carbon skeleton and a new pregnane from Trichilia connaroides

作者：Zhang, HP; Wu, SH; Shen, YM; Ma, YB; Wu, DG; Qi, SH; Luo, XD^*

来源：Canadian Journal of Chemistry, 2003, 81(3): 253-257.

DOI：10.1139/V03-025

• Trichilia connaroides
• Meliaceae
• pentanortriterpenoid
• trijugin C
• pregnane

A new rearranged pentanortriterpenoid (trijugin C) and a new pregnane (3beta,4alpha-dihydroxypregnan-16-one) were isolated from the EtOH extract of Trichilia connaroides (Meliaceae). Trijugin C has been shown to be a derivative of methyl angolensate with a novel carbon skeleton. The structures were elucidated on the basis of spectral analysis including H-1-H-1 COSY, HMQC, HMBC, and NOESY experiments. The possible biogenetic pathway of trijugin C is discussed.

• 出版日期2003-3
• 单位中国科学院昆明植物研究所