Studies on the Constituents of Palmae Plants. III. : The Constituents of Chamaerops humilis L. and Trachycarpus wagnerianus BECC.

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The constituents of the leaves, stems and underground parts of Chamaerops humilis L. and Trachycarpus wagnerianus BECC. (Palmae) have been investigated. We isolated and identified methyl proto-dioscin and methyl proto-Pb from the stems, dioscin, Pb, methyl proto-dioscin, methyl proto-Pb and methyl proto-rhapissaponin from the underground parts, and tricin 7-O-rutinoside and methyl proto-Pb from the leaves of C. humilis L. On the other hand, we isolated and identified methyl proto-dioscin and pseudoproto-dioscin from the stems, Pb, Tg, methyl proto-Pb and pseudoproto-Pb from the underground parts, and glucoluteolin, scolymoside, methyl proto-Pb and pseudoproto-Pb from the leaves of T. wagnerianus BECC. This is the first report of the isolation of tricin 7-O-β-rutinoside, Tg and pseudodiosgenin oligosides from Palmae plants, and also the first discovery of pseudosteroidal saponin from natural sources.

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