期刊
QUIMICA NOVA
卷 27, 期 4, 页码 525-527出版社
SOC BRASILEIRA QUIMICA
DOI: 10.1590/S0100-40422004000400002
关键词
Machaonia brasiliensis; secologanoside; chlorogenic acids
Chemical investigation of the MeOH extract of the leaves of Machaonia brasiliensis (Rubiaceae) resulted in the isolation and identification of 3beta-O-beta-glucopyranosyl stigmasterol, 3beta-O-beta-glucopyranosyl sitosterol, secologanoside, 7-O-beta-glucopyranosyl quercetagetin, 4,5-O-dicaffeoylquinic acid and 5-O-caffeoylquinic acid. The structures of these compounds were established by spectroscopic analysis, including 2D NMR experiments. The chemotaxonomic relevance of the isolation of secologanoside is discussed.
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