Triterpenoids from the barks of Terminalia chebula |
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Authors: | Chao Zhang Kun Jiang Shi-Jin Qu Yi-Ming Zhai Jun-Jie Tan |
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Institution: | Department of Natural Medicinal Chemistry, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai201203, China |
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Abstract: | Two new triterpenoids, termichebuloside A (1), an unusual dimeric triterpenoid saponin, and termichebulolide (2), an oleanolic acid-type lactone, along with 11 known triterpenoids, were isolated from MeOH extract of the barks of Terminalia chebula. The structures of 1 and 2 were elucidated to be arjunglucoside I-(3-O-19′,23-O-19′)-18,19-seco-19-hydroxyarjunglucoside I (1) and 2α,3β,23-trihydroxyolean-11,13(18)-dien-28,19β-olide (2), respectively, on the basis of spectroscopic evidences and biogenetic consideration. |
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Keywords: | termichebuloside A termichebulolide Terminalia chebula dimeric triterpenoid saponin triterpenoid lactone |
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