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Two New Triterpenoid Saponins from Morina nepalensis var. alba


Two new triterpenoid saponins, monepaloside K (1) and monepaloside L (2), together with a known saponin, mazusaponin I (3), were isolated from the water_soluble part of the whole plant of Morina nepalensis var. alba Hand._Mazz. The structures of monepalosides K and L were determined to be 3_O_α_L_arabinopyranosyl_(1→3)_β_D_xylopyranosyl siaresinolic acid (1) and 3_O_β_D_glucopyranosyl_(1→3)_α_L_arabinopyranosyl siaresinolic acid 28_O_β_D_glucopyranosyl_(1→6)_β_D_glucopyranoside (2) respectively, on the basis of chemical and spectroscopic evidence.

 

白花刺参中两个新三萜皂甙
滕荣伟  郑庆安  王德祖  杨崇仁!
(中国科学院昆明植物研究所,昆明!"#$#%)


摘要: 从著名藏药白花刺参(!"#$%& %’(&)’%*$* &’() &)+& *’+,)-.’//))的水溶性部分分离到$ 个新三萜皂甙———刺参甙0(!)和刺参甙1("),以及一个已知三萜皂甙2’/34’56+7+ 8(#)。应用波谱和化学方法,刺参甙0 和刺参甙1的结构分别鉴定为9-:-!- ,-’(’;7+65<(’+64<=- (>"9)-"---?<=65<(’+64<= 47’(@47+6=7A ’A7,(!)和9-:-"---B=3A65<(’+64<=- (>"9)-!- ,-’(’;7+65<(’+64<= 47’(@47+6=7A ’A7, $C-:-"---B=3A65<(’+64<=- (>"!)-"---B=3A65<(’+647,@(")。
关键词: 白花刺参;川续断科;刺参甙0;刺参甙1;2’/34’56+7+ 8
 

!通讯作者。H@=:#CG>-"$$9%$%;I’?:#CG>-">"#$$G;J-27’=:K A(<’+BL53;=7A) M2) <+) A+ N 。


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