NATURAL PRODUCT RESEARCH AND DEVELOPMENT ›› 2012, Vol. 23 ›› Issue (7): 866-. doi: A

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Two New Dihydrophenanthrenes from Spiranthes sinensis (Pers.) Ames

LIU Jing, SU Xue-hui, LI Cong-ying, WEN Qin-fa, LI Yan-fang*   

  1. Department of Pharmaceutics & Bioengineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, China
  • Online:2012-08-04 Published:2012-08-27

Abstract: A phytochemical study on Spiranthes sinensis led to the isolation of two new dihydrophenanthrenes derivatives, 5-hydroxy-7-methoxy-1-furano [2?,3?:2,1]-9,10-dihydrophenanthrene (1) and 5-hydroxy-7-methoxy-1-{6?,6?-dimethylpyrano [2?,3?:2,1]}-9,10-dihydrophenanthrene (2). Their structures were established by direct interpretation of their spectral data, mainly HRESIMS, 1D (1H, 13C NMR) and 2D NMR (HSQC and HMBC).

Key words: Spiranthes sinensis, chemical constituent, 9, 10-dihydrophenanthrene

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