摘要
从滇重楼中分离得到2个甾体皂苷,利用1H NMR、13C NMR、1H-1H COSY、HSQC、HMBC、1D和2D TOCSY等多种核磁共振方法鉴定其结构分别为(25R)-26-O-β-D-吡喃葡萄糖基-3β,22α,26-三羟基-呋甾-5-烯-3-O-α-L-吡喃鼠李糖基-(1→2)-[α-L-呋喃阿拉伯糖基-(1→4)]-β-D-吡喃葡萄糖苷(1,Parisaponin I)和(25R)-3β,5α,6β-三羟基-△7-螺甾烯-3-O-β-D-吡喃葡萄糖基-(1→3)-[α-L-吡喃鼠李糖基-(1→2)]-β-D-吡喃葡萄糖苷(2,paris-vietnaside A).对化合物1和2的1H NMR和13C NMR信号分别进行了归属和详细分析,并纠正了文献中的核磁数据归属错误.化合物2为首次从滇重楼中分离得到.
Two steroidal saponins were isolated from the rhizome of Paris polyphylla Smith vat. yunnanensis. Their structures were elucidated as （25R）-26-O-β-D-glucopyranosyl 3β, 22α, 26-trihydroxy-furost-5-ene-3-O-α-L-rhamnopyranosyl-（ 1→ 2）-[αL-arabinofuranosyl-（1→4）] -β-D-glucopyranoside （1, parisaponin I） and （25R）-3β, 5α, 6β trihydroxy-7 （ 8 ）-ene-spirostanol-3-O-β- D-glucopyranosyl-（ 1→ 3 ）-[αL-rhamnopyranosyl （1→2）]-β-D glueopyranoside （2, parisvietnaside A） by MS, 1D and 2D NMR spectroscopy. The ^1H and ^13C chemical shifts of the compounds were assigned, and the in correct assignments in previous literatures were corrected. Compound 2 was isolated from the plant for the first time.
出处
《波谱学杂志》
CAS
CSCD
北大核心
2009年第3期316-326,共11页
Chinese Journal of Magnetic Resonance
基金
国家自然科学基金资助项目(30371770,30672640)
关键词
核磁共振(NMR)
归属
2D
NMR
甾体皂苷
滇重楼
NMR, chemical shift, 2D NMR, steroidal saponin, Paris polyphylla Smith var. yunnanensis
