Journal ArticleDOI
Two bibenzyl derivatives from the orchid Cirrhopetalum andersonii
P.L. Majumder,Mausumi Basak +1 more
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TLDR
Two new bibenzyl derivatives were isolated from the orchid Cirrhopetalum andersonii and the structures were established as 2′,3-dihydroxy-3′-methoxy-4,5-methylenedioxyb Bibenzyl and 3,3′ -dihYDroxy-4-5- methylenedioXY-bibenzym, mainly from spectral evidence.About:
This article is published in Phytochemistry.The article was published on 1991-01-01. It has received 13 citations till now. The article focuses on the topics: Bibenzyl.read more
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Bibenzyl derivatives from the orchid Dendrobium amoenum
P.L Majumder,S Guha,Souvik Sen +2 more
TL;DR: In this paper, the structures of amoenylin and isoamenylin were established as 4-hydroxy-3,4′-dihydroxy-5-methoxybibenzyl and 3, 4′-hydroxyl 3,4,5-trimethoxy bibenenzyl, respectively, mainly from spectral evidence.
Journal ArticleDOI
Cumulatin and tristin, two bibenzyl derivatives from the orchids Dendrobium cumulatum and Bulbophyllum triste
P. L. Majumder,Shubhadeep Pal +1 more
TL;DR: Cumulatin and tristin, two new bibenzyl derivatives, were isolated from the orchids Dendrobium cumulatum and Bulbophyllum triste, respectively.
Journal ArticleDOI
Thunalbene, a stilbene derivative from the orchid Thunia alba
TL;DR: 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.
Journal ArticleDOI
Two stilbenoids from the orchid arundina bambusifolia
P.L. Majumder,Sabari Ghosal +1 more
TL;DR: Arundin and arundinin were shown to be 3-hydroxy-2,6-bis-( p -hydroxybenzyl)-5-methoxybibenzyl and 3,3′-dihydroxy-4-( p-HydroxybenZyl)- 5-mETHoxybiberenzyl, respectively, mainly from spectral evidence.
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Phytochemical, morphological, and molecular evidence for the occurrence of the neotropical liverwort Plagiochila stricta in the Canary Islands, new to Macaronesia
TL;DR: P. stricta from Tenerife is distinguished most easily from P. spinulosa by the scarcely decurrent antical leaf margin and the two species also show differences in the 9,10-dihydrophenanthrenes and other aromatic compounds present.
References
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Moscatilin, a bibenzyl derivative from the orchid Dendrobium moscatum
P.L. Majumder,R.C. Sen +1 more
TL;DR: Moscatilin, a new bibenzyl derivative isolated from the orchid Dendrobium moscatum, was shown to have the structure 4,4′-dihydroxy-3,3′,5-trimethoxybibensyl.
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Coelonin, A 9,10-dihydrophenanthrene from the orchids Coelogyne ochracea and Coelogyne elata
TL;DR: 2,7-Dihydroxy-4-methoxy-9,10-dihydrophenanthrene was isolated and identified from the whole plant of Coelogyne ochracea and C. elata.
Journal ArticleDOI
Nudol, a phenanthrene of the orchids Eulophia nuda, Eria carinata and Eria stricta
TL;DR: An amorphous phenanthrene, named nudol has been isolated from Eulophia nuda, Eria carinata and E. stricta and was identified as 2,7-dihydroxy-3,4-dimethoxyphenanthrene.
Journal ArticleDOI
Lusianthrin and lusianthridin, two stilbenoids from the orchid Lusia indivisa
P.L. Majumder,Saswati Lahiri +1 more
TL;DR: Lusianthrin and lusian-thridin, two new stilbenoids, were isolated from the orchid Lusia indivisa.
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.