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19.10.2016 | Note

Chodatiionosides A and B: two new megastigmane glycosides from Chorisia chodatii leaves

verfasst von: Mamdouh Nabil Samy, John Refaat Fahim, Sachiko Sugimoto, Hideaki Otsuka, Katsuyoshi Matsunami, Mohamed Salah Kamel

Erschienen in: Journal of Natural Medicines | Ausgabe 1/2017

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Abstract

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.

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Titel: Chodatiionosides A and B: two new megastigmane glycosides from Chorisia chodatii leaves
verfasst von: Mamdouh Nabil Samy
John Refaat Fahim
Sachiko Sugimoto
Hideaki Otsuka
Katsuyoshi Matsunami
Mohamed Salah Kamel
Publikationsdatum: 19.10.2016
Verlag: Springer Japan
Erschienen in: Journal of Natural Medicines / Ausgabe 1/2017
Print ISSN: 1340-3443
Elektronische ISSN: 1861-0293
DOI: https://doi.org/10.1007/s11418-016-1052-7

Springer Medizin

Abstract

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