These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: A new phenanthrenequinone from Dendrobium draconis.
    Author: Sritularak B, Anuwat M, Likhitwitayawuid K.
    Journal: J Asian Nat Prod Res; 2011 Mar; 13(3):251-5. PubMed ID: 21409687.
    Abstract:
    A number of Dendrobium species (Orchidaceae) have been used as health foods. In Thailand, the tea prepared from the stems of Dendrobium draconis Rchb.f. (Orchidaceae) has been used as a blood tonic. Our phytochemical investigation of this plant led to the isolation of a new compound namely 5-methoxy-7-hydroxy-9,10-dihydro-1,4-phenanthrenequinone, along with four known stilbenoids including hircinol, gigantol, batatasin III, and 7-methoxy-9,10-dihydrophenanthrene-2,4,5-triol. The structures of these compounds were determined through extensive spectroscopic studies, including (1)H and (13)C NMR, DEPT, COSY, NOESY, HMQC, HMBC, ESI-MS, and HR-ESI-MS experiments. In the DPPH-free radical assay, these stilbene derivatives showed appreciable antioxidant activity.
    [Abstract] [Full Text] [Related] [New Search]