摘要
从滇皂角GleditsiadelavayiFranch荚果的水溶性部分分离到一个含有 8个糖基的三萜皂苷。运用光谱方法鉴定其结构为 :3-O - β -D -吡喃木糖基 (1→ 2 ) -α -L -阿拉伯吡喃糖基(1→ 6 ) - β -D -葡萄吡喃糖基 - 2 8-O - β -D -吡喃木糖基 (1→ 3) - β -D -吡喃木糖基 (1→4 ) -α -L -鼠李吡喃糖基 (1→ 2 ) - [α -L -鼠李吡喃糖基 (1→ 6 ) ]- β -D -葡萄吡喃糖基刺囊酸 (GS C′)。应用 2DNMR谱 ,包括TOCSY ,1H 1HCOSY ,HMQC ,HMQC TOCSY ,HMBC和ROESY谱 ,全归属了其氢和碳的化学位移。
From the fruits of Gleditsia delavayi Franch., a new triterpenoid saponin GS C′ was isolated and its structure was determined to be 3 O β D xylopyranosyl (1→2) α L arabinopyranosyl (1→6) β D glucopyranosyl 28 O β D xylopyranosyl (1→3) β D xylopyranosyl (1→4) α L Rhamnopyranosyl (1→2) [α L rhamnopyranosyl (1→6)] β D glucopyranosyl echinocystic acid. Complete assignments of 1H and 13 C spectra of GS C′ were achieved by 2D NMR spectra, such as TOCSY, 1H 1H COSY, HMQC, HMQC TOCSY, HMBC and ROESY.
出处
《云南植物研究》
CSCD
北大核心
2002年第4期531-534,共4页
Acta Botanica Yunnanica
关键词
滇皂角
三萜皂苷
GS-C′
NMR全归属
Gleditsia delavayi
Leguminosae, Gleditsia saponin C′
NMR complete assignments
