Journal ArticleDOI
Thunalbene, a stilbene derivative from the orchid Thunia alba
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Thunalbene, a new stilbene derivative, was isolated from the orchid Thunia alba which also afforded six known stilbenoids: batatasin-III, lusianthridin, 3,7-dihydroxy-2,4-dimethoxyphenanthrene, 3.5methoxystilbenoid and flavanthrin this paper.About:
This article is published in Phytochemistry.The article was published on 1998-12-20. It has received 50 citations till now.read more
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Journal ArticleDOI
Natural stilbenoids: distribution in the plant kingdom and chemotaxonomic interest in Vitaceae
TL;DR: This review focuses on the distribution of stilbenes and 2-arylbenzofuran derivatives in the plant kingdom, the chemical structure of stILbenes in the Vitaceae family and their taxonomic implication.
Journal ArticleDOI
Natural phenanthrenes and their biological activity.
TL;DR: The present study furnishes an overview of the hydroxy or/and methoxy-substituted 9,10-dihydro/phenanthrene, methylated, prenylated and other monomeric derivatives, dimeric and trimeric phenanthrenes and their biological activities.
Book ChapterDOI
Stilbenoids: Chemistry and bioactivities
TL;DR: Stilbenoids are formed by a particular branch of the flavonoid biosynthetic pathway and are of special interest to natural product researchers for their roles in plant resistance to fungal pathogens and their biological effects as discussed by the authors.
Journal ArticleDOI
Synthesis, resolution, and absolute stereochemistry of (-)-blestriarene C.
Tetsutaro Hattori,Yuhi Shimazumi,Hitoshi Goto,Osamu Yamabe,Naoya Morohashi,Wataru Kawai,Sotaro Miyano +6 more
TL;DR: It was found that blestriarene C and its 7,7'-diisopropyl ether 2 underwent rapid photoracemization even under ambient light exposure.
Journal ArticleDOI
Phenanthrene derivatives from the orchid Coelogyne cristata.
P.L Majumder,S Sen,S Majumder +2 more
TL;DR: The structures of coelogsinanthridin and coeloginanthrin were established as 3,5,7-trihydroxy-1,2-dimethoxy-9,10-dihydrophenanthrene and 3,4,5-triHydroxy-2,4-dimETHoxyphenanthene, respectively, which may have biological activities of phytoalexins and endogenous plant growth regulators.
References
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Journal ArticleDOI
Phenanthrenes of Eulophia nuda
Patoomratana Tuchinda,Jinda Udchachon,Kanjai Khumtaveeporn,Walter C. Taylor,Lutz M. Engelhardt,Lutz M. Engelhardt,Allan H. White,Allan H. White +7 more
TL;DR: From the tubers of Eulophia nuda six phenanthrene derivatives have been isolated: 9,10-dihydro-2,5-dimethoxyphenanthrene-1,7-diol, 9, 10dihdroid-2.5dimethoxide-4methoxymethylphenanthrene -2,7diol; 1,5dimethylphenethylamine-1.7-Diol; and 4,4′, 8,8,8-8′-tetrameth
Journal ArticleDOI
Structure of flavanthrin, the first dimeric 9,10-dihydrophenanthrene derivative from the orchid eria flava
Pralay Majumder,Subhra Banerjee +1 more
TL;DR: Flavanthrin, the first dimeric 9,10-dihydrophenanthrene derivative, was isolated from the orchid Eria flava which also yielded the previously reported 9, 10-dibhrenanthrene coelonin this paper.
Journal ArticleDOI
Phenolic constituents of Coelogyne ovalis
TL;DR: The structure of 3′- O -methylbatatasin III, a new bibenzyl of the East Himalayan orchid, Coelogyne ovalis, has been established on the basis of spectral and chemical data.
Journal ArticleDOI
Pendulin, a polyoxygenated phenanthrene derivative from the orchid Cymbidium pendulum
P.L. Majumder,R.C. Sen +1 more
TL;DR: In this article, the orchid Cymbidium pendulum was isolated and the structure of the pendulum's phenanthrene derivative, pendulin, was further confirmed by its 13 C NMR spectral data.
Journal ArticleDOI
Dimeric phenathrenes from two Agrostophyllum species
TL;DR: The structures of agrostonin and Agrostonidin, two new dimeric phenanthrene derivatives isolated from the orchids, Agrostrophyllum khasiyanum and A. callosum, were established as 2,2′,7, 7,7′-tetramethoxy-1,1′-biphenanthryl, respectively, from spectral and chemical evidence, including regioselective biomimetic synthesis from their respective 9,10-dihydro monomers by oxidative coupling with
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