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.
diosgenin, Palmae, flavone glycoside, luteolin, Chamaerops humilis, Trachycarpus wagnerianus, sterodial saponin, pseudoproto-diosgenin, pennogenin, tricin
Journal NLM ID: 0377775WWW link: http://ci.nii.ac.jp/naid/110003625978Publisher: Pharmaceutical Society Of Japan
Institutions: School of Pharmaceutical Sciences, Showa University, Japan
Methods: 13C NMR, 1H NMR, gel filtration, IR, TLC, acid hydrolysis, GLC, optical rotation measurement, melting point determination