Gauthier C, Legault J, Lavoie S, Rondeau S, Tremblay S, Pichette A. Synthesis and cytotoxicity of bidesmosidic betulin and betulinic acid saponins.
JOURNAL OF NATURAL PRODUCTS 2009;
72:72-81. [PMID:
19115839 DOI:
10.1021/np800579x]
[Citation(s) in RCA: 61] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The naturally occurring cytotoxic saponin 28-O-beta-d-glucopyranosylbetulinic acid 3beta-O-alpha-l-arabinopyranoside (3) was easily synthesized along with seven bidesmosidic saponins starting from the lupane-type triterpenoids betulin (1) and betulinic acid (2). As highlighted by the preliminary cytotoxicity evaluation against A549, DLD-1, MCF7, and PC-3 human cancer cell lines, the bidesmosidic betulin saponin 22a, bearing alpha-l-rhamnopyranoside moieties at both C-3 and C-28 positions, was determined to be a potent cytotoxic agent (IC(50) 1.8-1.9 microM).
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