A PAIR OF 24-HYDROPEROXYL EPIMERIC DAMMARANE SAPONINS FROM FLOWER-BUDS OF PANAX GINSENG

• 来源期刊: 亚洲天然物产研究（英文版）
• 学科: 生物学
• 关键词: Panax ginseng Flower-buds Triterpene saponins Ginsenoside Ⅰ Ginsenoside Ⅱ
• 年，卷（期）: 2001,（3）
• 页码范围: 235-240
• 页数: 6页
• 分类号: Q94
• 语种: 英文

摘要

Further investigation on the saponins of the flower-buds of Panax ginseng C. A. Meyer has resulted in the isolation and structural elucidation of a pair of new 24-epimers of dammarane type saponins named ginsenoside I and II. The structures of the epimers were characterized on the basis of chemical and spectral evidence as 3-O-[β-D-glucopyranosyl-(1→2)-β-D-glucopyranosyl]-20-S-O-β-D-glucopyranosyl-3β,12β,20(S)-trihydroxy-24ξ-hydroperoxydam-mar-25-ene, except for their C-24 configurations. Ginsenoside Ⅰ is a new triterpene glycoside,and ginsenoside Ⅱ is a known compound first isolated from a natural plant.