Three New Immunomodulating C21-Steroidal Glycosides from the Stems of Stephanotis mucronata
✍ Scribed by Xiaoyu Li; Hongxiang Sun; Yiping Ye; Fengyang Chen; Jue Tu; Yuanjiang Pan
- Publisher
- John Wiley and Sons
- Year
- 2005
- Tongue
- English
- Weight
- 142 KB
- Volume
- 2
- Category
- Article
- ISSN
- 1612-1872
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## Abstract Guided by __in vitro__ immunological tests, three immunomodulating steroidal glycosides, stemucronatosides A (**1**), B (**2**), and C (**3**), were isolated from the roots of __Stephanotis mucronata.__ On the basis of chemical evidence and extensive spectroscopic methods including 1D a
## Abstract Three new glycosides, (3__β__,5__α__,8__α__,11__α__,12__β__,14__β__,17__α__,20__R__)‐3‐[(2,6‐dideoxy‐4‐__O__‐(6‐deoxy‐3‐__O__‐methyl‐__β__‐D‐allopyranosyl)‐3‐__O__‐methyl‐__β__‐D‐__arabino__‐hexopyranosyl)oxy]‐12‐__O__‐tigloyl‐8,20 : 11,20‐diepoxypregnane‐12,14‐diol (**1**), (3__β__,5__
## Abstract magnified image Two new glycosides, (3__β__,8__β__,9__α__,16__α__,17__α__)‐14,16__β__ : 15,20__α__:18,20__β__‐triepoxy‐16__α__,17__α__‐dihydroxy‐14‐oxo‐13,14 : 14,15‐disecopregna‐5,13(18)‐dien‐3‐yl __α__‐cymaropyranosyl‐(1→4)‐__α__‐digitoxopyranosyl‐(1→4)‐__α__‐oleandropyranoside (**1*
## Abstract Two new pregnane glycosides, (3__β__,5__α__,12__β__,14__β__,17__α__)‐3‐(__β__‐cymaropyranosyloxy)‐8,14,17,20‐tetrahydroxypregnan‐12‐yl benzoate (**1**) and (3__β__,5__α__,12__β__,14__β__,17__α__)‐3‐(__β__‐cymaropyranosyloxy)‐8,14,17,20‐tetrahydroxypregnan‐12‐yl cinnamate (**2**) were is