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Structure elucidation of two triterpenoid saponins from rhizome of Anemone raddeana Regel
Fitoterapia, 07/23/09
Lu J et al. – Two new 27–hydroxy–oleanolic acid type triterpenoid saponins, raddeanoside 20 (1) and raddeanoside 21(2) were isolated from the rhizome of Anemone raddeana Regel. The structures of the two compounds were elucidated as 27–hydroxy–oleanolic acid 3–O–alpha–l–rhamnopyranosyl(1–2) [beta–d–glucopyranosyl (1–4)]–alpha–l–arabinopyranoside (1) and 3–O–alpha–l–rhamnopyranosyl (1–2)–alpha–l–arabinopyranosyl–27–hydroxy–oleanolic acid 28–O–alpha–l–rhamnopyranosyl(1–4)–beta–d–glucopyranosyl (1–6)–beta–d–glucopyranoside (2) on the basis of chemical and spectral evidence.
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