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New Polyoxygenated Triterpenoids from Stachyurus himalaicus var. himalaicus
β Scribed by Jing-Hua Yang; Yun-Song Wang; Rong Huang; Shi-De Luo; Hong-Bin Zhang; Liang Li
- Publisher
- John Wiley and Sons
- Year
- 2006
- Tongue
- German
- Weight
- 82 KB
- Volume
- 89
- Category
- Article
- ISSN
- 0018-019X
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β¦ Synopsis
Two new polyoxygenated triterpenoids, stachlic acid A (= (2a,3b)-2,3,23,29-tetrahydroxyolean-12en-28-oic acid; 1) and stachlic acid B (= (2a,3a)-2,29-dihydroxy-3,23-[(1,1-dimethylmethylene)dioxy]olean-12-ene-28-oic acid; 2), were isolated from Stachyurus himalaicus var. himalaicus. Their structures were established by means of extensive spectroscopic studies and chemical evidence. The purified product 1 was found to have moderate in vitro cytotoxic activity against human Hela cells.
π SIMILAR VOLUMES
## Abstract Two new polyoxygenated triterpenoids, (2__Ξ²__,3__Ξ±__,6__Ξ±__)β2,3,6,20,23,30βhexahydroxyursβ12βenβ28βoic acid (**1**) and (2__Ξ²__,3__Ξ±__)β2,3,20,23,24,30βhexahydroxyursβ12βenβ28βoic acid __O__β__Ξ²__βDβglucopyranosyl ester (**2**) were isolated from the roots of __Actinidia valvata__ Dunn
Three new 24-noroleanane triterpenoids, i.e., 2a,19a-dihydroxy-3-oxo-24-norolean-12-en-28-oic acid (1) and 19a-hydroxy-3-oxo-24-norolean-12-en-28-oic acid (2), and 2a,3b,19a-trihydroxy-24-norolean-12en-28-oic acid (3) were isolated from Quercus aliena var. acuteserrata, together with three known com