Asada Y, Ikeno M, Furuya T
School of Pharmaceutical Sciences, Kitasato University, Tokyo, Japan.
Phytochemistry. 1994 May;36(2):455-8. doi: 10.1016/s0031-9422(00)97094-8.
Two novel triterpene saponins, named desacylmasonosides 4 and 5, and a new oxygenated fatty acid have been isolated, together with a known saponin, desacylcrocosmioside A, from the weak alkaline hydrolysate of the crude saponin obtained from the corms of Crocosmia masoniorum. On the basis of spectral and chemical evidence, the structures of desacylmasonosides 4 and 5 were elucidated as 3-O-[beta-D-fucopyranosyl-(1-->6)-beta-D-glucopyranosyl]-28-O-(2-O-[beta - D-apiofuranosyl-(1-->4)-beta-D-xylopyranosyl-(1-->4)-alpha-L- rhamnopyranosyl]-3-O-(beta-D-glucopyranosyl)-beta-D-fucopyranosyl)-po lygalaci c acid and 3-O-[alpha-L-arabinopyranosyl-(1-->6)-beta-D-glucopyranosyl]-28-O- [2-O-(alpha-L-rhamnopyranosyl)-3-O-(beta-D-glucopyranosyl)-beta-D- fucopyranosyl]-polygalacic acid, respectively. An oxygenated fatty acid derived from the acyl moiety of the esterified saponins was identified as 2,16-dihydroxy-9-oxohexadecanoic acid.
从雄黄兰球茎中提取的粗皂苷的弱碱性水解产物中，分离出两种新型三萜皂苷，分别命名为去酰基知母皂苷4和5，以及一种新的氧化脂肪酸，同时还分离出一种已知的皂苷去酰基番红花苷A。基于光谱和化学证据，去酰基知母皂苷4和5的结构分别被阐明为3-O-[β-D-岩藻吡喃糖基-(1→6)-β-D-吡喃葡萄糖基]-28-O-(2-O-[β-D-阿吡喃糖基-(1→4)-β-D-木吡喃糖基-(1→4)-α-L-鼠李吡喃糖基]-3-O-(β-D-吡喃葡萄糖基)-β-D-岩藻吡喃糖基)-远志酸和3-O-[α-L-阿拉伯吡喃糖基-(1→6)-β-D-吡喃葡萄糖基]-28-O-[2-O-(α-L-鼠李吡喃糖基)-3-O-(β-D-吡喃葡萄糖基)-β-D-岩藻吡喃糖基]-远志酸。从酯化皂苷的酰基部分衍生出的一种氧化脂肪酸被鉴定为2,16-二羟基-9-氧代十六烷酸。
