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Two New Compounds from Dendrobium chrysotoxum

✍ Scribed by Hong Yang; Gui-Xin Chou; Zheng-Tao Wang; Yue-Wei Guo; Zhi-Bi Hu; Luo-Shan Xu

Publisher
John Wiley and Sons
Year
2004
Tongue
German
Weight
95 KB
Volume
87
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

Two novel compounds, (9__R__)‐4‐methoxy‐9__H__‐fluorene‐2,5,9‐triol (1a) and 2,7‐dihydroxy‐8‐methoxyphenanthro[4,5‐bcd]pyran‐5(5__H__)‐one (2) were isolated from the stems of the orchid Dendrobium chrysotoxum Lindl. Their structures were established spectroscopically, by chemical derivatization, and by single‐crystal X‐ray diffraction analysis. The absolute configuration of 1a was determined by Mosher's method. Neither compound showed antitumoral activity.

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