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Two New Triterpenoid Saponins from Akebia quinata (Thunb.) Decne.
Author(s) -
Liu GuiYan,
Ma ShuangCheng,
Zheng Jian,
Zhang Ji,
Lin RuiChao
Publication year - 2007
Publication title -
journal of integrative plant biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.734
H-Index - 83
eISSN - 1744-7909
pISSN - 1672-9072
DOI - 10.1111/j.1744-7909.2007.00362.x
Subject(s) - oleanolic acid , hederagenin , chemistry , saponin , triterpenoid , stereochemistry , traditional medicine , sapogenin , triterpenoid saponin , medicine , alternative medicine , pathology
Two new triterpenoid saponins, hederagenin 3‐O‐α‐ L ‐arabinopyranosyl‐(1→2)‐α‐ L ‐arabinopyranoside named akeboside L a (compound 1), oleanolic acid 3‐O‐α‐ L ‐arabinopyranosyl‐(1→2)‐(β‐ D ‐glucopyranoside named akeboside L b (compound 2), along with five known saponins, oleanolic acid 3‐O‐α‐ L ‐rhamnopyranosyl‐(1→2)‐ot‐ L ‐arabinopyranoside (compound 3), hederagenin 3‐O‐α‐ L ‐rhamnopyranosyl‐(1→2)‐α‐ L ‐arabinopyranoside (compound 4), oleanolic acid 3‐O‐β‐ D ‐xylopyranosyl‐(1→3)‐α‐ L ‐rhamnopyranosyl‐(1→2)‐α‐ L ‐arabinopyranoside (compound 5), 3‐O‐α‐ L ‐rhamnopyranosyl‐(1→2)‐α‐ L ‐arabinopyranosyl oleanolic acid 28‐O‐α‐ L ‐rhamnopyranosyl‐(1→4)‐α‐ D ‐glucopyranosyl‐(1→6)‐(β‐ D ‐glucopyranoside (compound 6), 3‐O‐α‐ L ‐rhamnopyranosyl‐(1→2)‐α‐ L ‐arabinopyranosyl hederagenin 28‐O‐α‐ L ‐rhamnopyranosyl‐(1→4)‐β‐ D ‐glucopyranosyl‐(1→6)‐(β‐ D ‐glucopyranoside (compound 7) were isolated from the n ‐butanol part of the 80% ethanol extracts of the dried stems of Akebia quinata (Thunb.) Decne. Compound 5 was isolated from plants of genus Akebia for the first time. The structures were elucidated on the basis of physicochemical properties and spectral data.