- 作者: Yun-Lian Lina, Yan-Ming Wua, Yueh-Hsiung Kuob and Chieh-Fu Chena
- 中文摘要: Three new polyoxypregnane glycosides, gymnepregosides G, H, and I, together with four known compounds were isolated from the stems of Gymnema alternifolium. The structural elucidation were determined principally by spectral data, and assigned to be 12-O-cinnamoyl-3b,5a,8b,12b,14b,17b,20-heptahydroxy-(20S)-pregn-6-enyl-3-O-b-D-cymaropyranoside (1), 20-O-benzoyl-12-O-cinnamoyl-3b,5a,8b,12b,14b,17b,20-heptahydroxy-(20S)-pregn-6-enyl-3-O-b-D-cymaropyranoside (2), and penupogenin 3-O-b-D-cymaropyranoside (3), respectively.
- 英文摘要: --
- 中文關鍵字: --
- 英文關鍵字: --