- Chodatiionosides A and B: two new megastigmane glycosides from Chorisia chodatii leaves
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Phytochemical investigation of Chorisia chodatii Hassl. leaves led to the isolation of an unusual rearranged megastigmane glycoside; chodatiionoside A (1) and another new megastigmane glycoside; chodatiionoside B (2), together with three known megastigmane glycosides (3–5) and one known flavonoid glycoside (6). Their structures were elucidated by spectroscopic methods including 1D and 2D NMR experiments (1H, 13C, DEPT, COSY, HSQC and HMBC) in combination with HR-ESI–MS, CD and modified Mosher’s method. As a result, chodatiionoside A has been elucidated as a first example of an unusual rearranged form of megastigmane.
- Samy, Mamdouh Nabil,Fahim, John Refaat,Sugimoto, Sachiko,Otsuka, Hideaki,Matsunami, Katsuyoshi,Kamel, Mohamed Salah
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- Megastigmane glucosides and an unusual monoterpene from the leaves of Cananga odorata var. odorata, and absolute structures of megastigmane glucosides isolated from C. odorata var. odorata and Breynia officinalis
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From a 1-BuOH-soluble fraction of a MeOH extract of Cananga odorata var. odorata, collected at the Botanical Garden of Chiang Mai University, a new megastigmane glucoside, named canangaionoside, and an irregular monoterpene were isolated. A known compound
- Matsunami, Katsuyoshi,Nagashima, Jiro,Sugimoto, Sachiko,Otsuka, Hideaki,Takeda, Yoshio,Lhieochaiphant, Duangporn,Lhieochaiphant, Sorasak
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experimental part
p. 460 - 467
(2011/11/29)
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