Patoomratana TuchindaJinda UdchachonKanjai KhumtayeepornWalter C. TaylorMahidol UniversityThe University of Sydney2018-06-142018-06-141989-01-01Phytochemistry. Vol.28, No.9 (1989), 2463-2466003194222-s2.0-16244399984https://repository.li.mahidol.ac.th/handle/20.500.14594/15695From the tubers of Eulophia nuda, further phenanthrene derivatives have been isolated: 9, 10-dihydro-1-(4′-hydroxybenzyl)-4,7-dimethoxyphenanthrene-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. © 1989.Mahidol UniversityAgricultural and Biological SciencesBiochemistry, Genetics and Molecular BiologyArticleSCOPUS10.1016/S0031-9422(00)98006-3