1309362-84-2Relevant academic research and scientific papers
Tricalysionoside a, a megastigmane gentiobioside, sulfatricalysines a-F, and tricalysiosides X-Z, ent-kaurane glucosides, from the leaves of Tricalysia dubia
Shitamoto, Junko,Sugimoto, Sachiko,Matsunami, Katsuyoshi,Otsuka, Hideaki,Shinzato, Takakazu,Takeda, Yoshio
, p. 72 - 77 (2011)
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.
Reinvestigation of the absolute stereochemistry of megastigmane glucoside, icariside B5
Matsunami, Katsuyoshi,Otsuka, Hideaki,Takeda, Yoshio,Miyase, Toshio
experimental part, p. 1399 - 1402 (2010/12/19)
Icariside B5 is one of the widely distributed megastigmane glucosides among plant sources. The absolute structure of icariside B 5 was reinvestigated by chemical conversion from the related compound and the application of the modifie
