期刊
CHEMICAL & PHARMACEUTICAL BULLETIN
卷 59, 期 1, 页码 72-77出版社
PHARMACEUTICAL SOC JAPAN
DOI: 10.1248/cpb.59.72
关键词
Tricalvsia dubia; Rubiaceae, megastigmane glucoside; sulfate; ent kaurane glucoside
资金
- Ministry of Education Culture Sports Science and Technology of Japan
- Japan Society for the Promotion of Science
- Ministry of Health Labour and Welfare
- Takeda Science Foundation
Further isolation work on the water-soluble fraction of a MeOH extract of Tricalysia dubia afforded one new megastigmane gentiobioside, named tricalysionoside A (1), and three sulfates, named sulfatricalysines A-C (2-4) Extensive isolation work on the 1-BuOH-soluble fraction of a MeOH extract of T dubia yielded sulfatricalysines D-F (5-7) and three new ent-kaurane glucosides, named tricalysiosides X-Z (8-10) The structures of the new compounds were elucidated by analyses of one- and two-dimensional NMR spectroscopic data The absolute stereochemistry of tricalysionoside A (1) was established by modified Mosher's method
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