Two new triterpenoid glycosides, hederagenin-3-O-b-D-xylopyranoside (1), dodecandral 3-O-b-D-xylopyranoside(2), were isolated from Elsholtzia bodinieri Vant. The structures of 1 and 2 were established by spectroscopi...Two new triterpenoid glycosides, hederagenin-3-O-b-D-xylopyranoside (1), dodecandral 3-O-b-D-xylopyranoside(2), were isolated from Elsholtzia bodinieri Vant. The structures of 1 and 2 were established by spectroscopic and chemical methods.展开更多
Two new pyrrolizidines named lankongensisine A (1), B (2) were isolated from the roots of Ligularia lankongensis collected in Lijiang, Yunnan, and their structures were established by spectroscopic analysis.
Two new ent-kauranoids, named maoyecrystals A (1) and B (2), were isolated from the EtOAc extract of the dried leaves of Isodon japonica (Burman f.) Hara collected in Tongbai mountains, Henan Province. Their structur...Two new ent-kauranoids, named maoyecrystals A (1) and B (2), were isolated from the EtOAc extract of the dried leaves of Isodon japonica (Burman f.) Hara collected in Tongbai mountains, Henan Province. Their structures were determined on the basis of spectral data, especially by 2D NMR.展开更多
Two novel ent-kauranoids with new sub-skeleton types, gesneroidins G and H were isolated as white powder from the ether extract of the leaves of Isodon gesneroides through normal phase column chromatography. Their str...Two novel ent-kauranoids with new sub-skeleton types, gesneroidins G and H were isolated as white powder from the ether extract of the leaves of Isodon gesneroides through normal phase column chromatography. Their structures were elucidated as 3b,6a,7b-triacetoxyl-15-hydroxyl-14-oxo-ent-15,16-seco-kaur-11,17-olide and 1a-hydroxyl-3b,6a,7b,11b-tetraacetoxyl-ent-nor-15,17-kaur-8,16-olide on the basis of the spectral evidences including 1D and 2D NMR spectra.展开更多
文摘Two new triterpenoid glycosides, hederagenin-3-O-b-D-xylopyranoside (1), dodecandral 3-O-b-D-xylopyranoside(2), were isolated from Elsholtzia bodinieri Vant. The structures of 1 and 2 were established by spectroscopic and chemical methods.
文摘Two new pyrrolizidines named lankongensisine A (1), B (2) were isolated from the roots of Ligularia lankongensis collected in Lijiang, Yunnan, and their structures were established by spectroscopic analysis.
文摘Two new ent-kauranoids, named maoyecrystals A (1) and B (2), were isolated from the EtOAc extract of the dried leaves of Isodon japonica (Burman f.) Hara collected in Tongbai mountains, Henan Province. Their structures were determined on the basis of spectral data, especially by 2D NMR.
文摘Two novel ent-kauranoids with new sub-skeleton types, gesneroidins G and H were isolated as white powder from the ether extract of the leaves of Isodon gesneroides through normal phase column chromatography. Their structures were elucidated as 3b,6a,7b-triacetoxyl-15-hydroxyl-14-oxo-ent-15,16-seco-kaur-11,17-olide and 1a-hydroxyl-3b,6a,7b,11b-tetraacetoxyl-ent-nor-15,17-kaur-8,16-olide on the basis of the spectral evidences including 1D and 2D NMR spectra.
