saussureoside A 在
水 、 β-glucosidase 作用下,
反应 96.0h,
以71%的产率得到(E)-4-[(1R,4S,5S,6S)-4,5-dihydroxy-2,2,6-trimethyl-7-oxabicyclo[4.1.0]heptan-1-yl]but-3-en-2-one
参考文献:
名称:
Bioactive Constituents from Chinese Natural Medicines. XV. Inhibitory Effect on Aldose Reductase and Structures of Saussureosides A and B from Saussurea medusa
Bioactive Constituents from Chinese Natural Medicines. XV. Inhibitory Effect on Aldose Reductase and Structures of Saussureosides A and B from Saussurea medusa
作者:Haihui Xie、Tao Wang、Hisashi Matsuda、Toshio Morikawa、Masayuki Yoshikawa、Tadato Tani
DOI:10.1248/cpb.53.1416
日期:——
The 80% aqueous acetone extract from the whole plant of Saussurea medusa MAXIM. was found to inhibit rat lens aldose reductase (IC50=1.4 μg/ml). From this extract, flavonoids, lignans, and quinic acid derivatives were isolated together with two new ionone glycosides, saussureosides A and B. Their absolute stereostructures were elucidated on the basis of chemical and physicochemical evidence including the application of modified Mosher's method. In addition, some isolates were found to show an inhibitory effect on aldose reductase.