药用食品。IV. 胡芦巴籽。(1)：三角皂苷Ia、Ib、IIa、IIb、IIIa和IIIb的结构，来自印度胡芦巴（Trigonella foenum-graecum L.）种子的新呋甾烷醇皂苷
Medicinal foodstuffs. IV. Fenugreek seed. (1): structures of trigoneosides Ia, Ib, IIa, IIb, IIIa, and IIIb, new furostanol saponins from the seeds of Indian Trigonella foenum-graecum L.
作者信息
Yoshikawa M, Murakami T, Komatsu H, Murakami N, Yamahara J, Matsuda H
机构信息
Kyoto Pharmaceutical University, Japan.
出版信息
Chem Pharm Bull (Tokyo). 1997 Jan;45(1):81-7. doi: 10.1248/cpb.45.81.
Six new furostanol saponins called trigoneosides Ia, Ib, IIa, IIb, IIIa, and IIIb were isolated from a medicinal foodstuff, fenugreek seed, the seed of Trigonella foenum-graecum L. (Leguminosae) originating from India, together with two known saponins, glycoside D and trigofoenoside A. The structures of trigoneosides Ia, Ib, IIa, IIb, IIIa, and IIIb were determined on the basis of chemical and physicochemical evidence as 26-O-beta-D-glucopyranosyl-(25S)-5 alpha-furostane-2 alpha,3 beta,22 zeta,26-tetraol 3-O-[beta-D-xylopyranosyl (1 --> 6)]-beta-D-glucopyranoside, 26-O-beta-D-glucopyranosyl-(25R)- 5 alpha-furostane-2 alpha,3 beta,22 zeta,26-tetraol 3-O-[beta-D-xylopyranosyl (1-->6)]-beta-D-glucopyranoside, 26-O-beta-D-glucopyranosyl-(25R)-5 beta-furostane-3 beta,22 zeta,26-triol 3-O-[beta-D-xylopyranosyl (1 --> 6)]-beta-D-glucopyranoside, 26-O-beta-D-glucopyranosyl-(25R)-5 beta-furostane-3 beta,22 zeta,26-triol 3-O-[beta-D-xylopyranosyl (1-->6)]-beta-D-glucopyranoside, 26-O-beta-D-glucopyranosyl-(25S)-5 alpha-furostane-3 beta,22 zeta,26-triol 3-O-[alpha-L-rhamnopyranosyl(1 --> 2)]-beta-D-glucopyranoside, and 26-O-beta-D-glucopyranosyl-(25R)-5 alpha-furostane-3 beta,22 zeta,26-triol 3-O-[alpha-L-rhamnopyranosyl (1 --> 2)]-beta-D-glucopyranoside, respectively.
从一种药用食品胡芦巴籽（即来自印度的豆科植物胡芦巴Trigonella foenum - graecum L.的种子）中分离出6种新的呋甾烷醇皂苷，分别命名为三角皂苷Ia、Ib、IIa、IIb、IIIa和IIIb，同时还分离出两种已知皂苷糖苷D和胡芦巴皂苷A。基于化学和物理化学证据确定，三角皂苷Ia、Ib、IIa、IIb、IIIa和IIIb的结构分别为26 - O - β - D - 吡喃葡萄糖基 - (25S) - 5α - 呋甾烷 - 2α,3β,22ζ,26 - 四醇3 - O - [β - D - 吡喃木糖基(1→6)] - β - D - 吡喃葡萄糖苷、26 - O - β - D - 吡喃葡萄糖基 - (25R) - 5α - 呋甾烷 - 2α,3β,22ζ,26 - 四醇3 - O - [β - D - 吡喃木糖基(1→6)] - β - D - 吡喃葡萄糖苷、26 - O - β - D - 吡喃葡萄糖基 - (25R) - 5β - 呋甾烷 - 3β,22ζ,26 - 三醇3 - O - [β - D - 吡喃木糖基(1→6)] - β - D - 吡喃葡萄糖苷、26 - O - β - D - 吡喃葡萄糖基 - (25R) - 5β - 呋甾烷 - 3β,22ζ,26 - 三醇3 - O - [β - D - 吡喃木糖基(1→6)] - β - D - 吡喃葡萄糖苷、26 - O - β - D - 吡喃葡萄糖基 - (25S) - 5α - 呋甾烷 - 3β,22ζ,26 - 三醇3 - O - [α - L - 吡喃鼠李糖基(1→2)] - β - D - 吡喃葡萄糖苷以及26 - O - β - D - 吡喃葡萄糖基 - (25R) - 5α - 呋甾烷 - 3β,22ζ,26 - 三醇3 - O - [α - L - 吡喃鼠李糖基(1→2)] - β - D - 吡喃葡萄糖苷。
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