Phytochemistry p. 2463 - 2466 (1989)
Update date:2022-08-11
Topics:
Tuchinda, Patoomratana
Udchachon, Jinda
Khumtaveeporn, Kanjai
Taylor, Walter C.
From the tubers of Eulophia nuda, further phenanthrene derivatives have been isolated: 9,10-dihydro-1-(4'-hydroxybenzyl)-4,7-dimethoxyphenanthene-2,8-diol, 1-(4'-hydroxybenzyl)-4,8-dimethoxyphenanthrene-2,7-diol.In addition, 3,4'-dihydroxy-3',5,5'-trimethoxybibenzyl and bis(4-hydroxybenzyl) ether were obtained.The structures were assigned by spectroscopic methods.The structure of the penultimate compound mentioned above was also confirmed by synthesis.Key Word Index-Eulophia nuda; Orhidaceae; benzylated phenanthrenes; bibenzyls.
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