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  • Title: Dihydrophenanthrenes from the stems and leaves of Dioscorea nipponica Makino.
    Author: Lu D, Liu J, Li P.
    Journal: Nat Prod Res; 2010 Aug; 24(13):1253-7. PubMed ID: 20645213.
    Abstract:
    From the CHCl3-soluble portion of the 70% EtOH extract of the stems and leaves of Dioscorea nipponica Makino, two new dihydrophenanthrenes were isolated, 2,7-dihydroxy-3,4,6-trimethoxy-9,10-dihydrophenanthrene, and 4,4',7,7'-tetrahydroxy-2,2',6,6'-tetramethoxy-1,1'-bi-9,10-dihydrophenanthrenyl. The structures were determined by means of HRMS, 1H-NMR, 13C-NMR, and HMBC experiments.
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