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[Triterpenoids from the root bark of Aralia subcapitata]
1Institute of Medicinal Plants, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100094.
Objective:
To investigate the chemical constituents of Aralia subcapitata.
Method:
The methanol extract of A. subcapitata was separated by repeated column chromatography, and the compounds were identified on the basis of spectroscopic analysis(IR, EI-MS, 1HNMR and 13CNMR) and physicochemical properties.
Result:
Four compounds were isolated from the root bark of A. subcapitata. Their structures were identified as 3 beta-hydroxy-oleana-11, 13(18)-dien-28-oic acid(I), 3-oxo-oleana-12-en-28-oic acid (II), oleanolic acid(III) and daucosterol(IV).
Conclusion:
All these compounds were isolated from this plant for the first time. Among them, compounds I and II were obtained for the first time from Aralia.