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Journal ArticleDOI

Two stilbenoids from the orchid Cirrhopetalum andersonii

01 Jan 1991-Phytochemistry (Pergamon)-Vol. 30, Iss: 10, pp 3429-3432
Abstract: Cirrhopetalanthridin and cirrhopetalidinin, two new stilbenoids isolated from the orchid Cirrhopetalum andersonii , were shown to be 4,7-dihydroxy-2,3-methylenedioxy-9,10-dihydrophenanthrene and 3,2′-dihydroxy-5′methoxy-4,5-methylenedioxy bibenzyl, respectively, from spectral and chemical evidence.

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Topics: Bibenzyl (56%)
Citations
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Journal ArticleDOI
01 Mar 2008-Phytochemistry
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.

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Abstract: The aim of this review is to survey the various naturally occurring phenanthrene compounds that have been isolated from different plants. Only one review has previously been published on this topic. Gorham (1989) reviewed the structures, biosynthesis, separations and spectroscopy of stilbenes and phenanthrenes. The present study furnishes an overview of the hydroxy or/and methoxy-substituted 9,10-dihydro/phenanthrenes, methylated, prenylated and other monomeric derivatives, dimeric and trimeric phenanthrenes and their biological activities. A fairly large number of phenanthrenes have been reported from higher plants, mainly in the Orchidaceae family, in the species Dendrobium, Bulbophyllum, Eria, Maxillaria, Bletilla, Coelogyna, Cymbidium, Ephemerantha and Epidendrum. A few phenanthrenes have been found in the Hepaticae class and Dioscoreaceae, Combretaceae and Betulaceae families. Their distribution correlates strongly with the taxonomic divisions. These plants have often been used in traditional medicine, and phenanthrenes have therefore been studied for their cytotoxicity, antimicrobial, spasmolytic, anti-inflammatory, antiplatelet aggregation, antiallergic activities and phytotoxicity. On the basis of 120 references, this review covers the phytochemistry and pharmacology of phenanthrenes, describing 252 compounds. This contribution stems from our work on the medicinal plant Tamus communis.

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232 citations



Journal ArticleDOI
01 Jan 1993-Phytochemistry
Abstract: Cumulatin and tristin, two new bibenzyl derivatives, were isolated from the orchids Dendrobium cumulatum and Bulbophyllum triste, respectively.

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50 citations


Journal ArticleDOI
01 Jun 1995-Phytochemistry
Abstract: Callosin and callosinin, two new stilbenoids, were isolated from the orchid Agrostophyllum callosum , which also afforded, 4-hydroxy-3,5-dimethoxybenzoic acid, orchinol, 6-methoxycoelonin, imbricatin, flaccidin, oxoflaccidin, iso-oxoflaccidin, flaccidinin and agrostophyllin of previously known structures. Callosin was also isolated from another orchid, Coelogyne flaccida . The structures of callosin and callosinin were established as 2,6-dihyroxy-4,7-dimethoxy-9,10- dihydrophenanthrene and 2,6,7-trimethoxy-9,10-dihydro-5 H -phenanthro [4,5-bcd]pyran-5-one, respectively, from spectral and chemical evidence. For ease of comparison of the spectral data the phenanthrene numbering system is used in this paper.

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40 citations


Journal ArticleDOI
P.L. Majumder1, S. Banerjee1, Sumitra Sen1Institutions (1)
01 Jun 1996-Phytochemistry
Abstract: Callosumin, callosuminin and callosumidin, three new stibenoids, were isolated from the orchid Agrostophyllum callosum which earlier afforded, besides 4-hydroxy-3,5-dimethoxybenzoic acid, 10 other structurally related stilbenoids, viz. orchinol, 6-methoxycoelonin, imbricatin, flaccidin, oxoflaccidin, isooxoflaccidin, flaccidinin, agrostophyllin, callosin and callosinin. The structures of callosumin, callosuminin and callosumidin were established as 2,4,6,7-tetramethoxy-9,10-dihydrophenanthrene, 2,4,6,7-tetramethoxyphenanthrene and 2,7-dihydroxy-5-ethoxy(ax)-6-methoxy-9,10-dihydro-5H-phenanthro[4,5-bcd]pyran, respectively, from spectral and chemical evidence. Although in naming callosumidin the systematic numbering system has been adopted, for ease of comparison of the spectral results the phenanthrene numbering system for the compound and its structural analogues is used.

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39 citations


References
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Journal ArticleDOI
01 Jan 1987-Phytochemistry
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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Abstract: Moscatilin, a new bibenzyl derivative isolated from the orchid Dendrobium moscatum , was shown to have the structure 4,4′-dihydroxy-3,3′,5-trimethoxybibenzyl.

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76 citations


Journal ArticleDOI
01 Jan 1982-Phytochemistry
TL;DR: 2,7-Dihydroxy-4-methoxy-9,10-dihydrophenanthrene was isolated and identified from the whole plant of Coelogyne ochracea and C. elata.

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Abstract: 2,7-Dihydroxy-4-methoxy-9,10-dihydrophenanthrene was isolated and identified from the whole plant of Coelogyne ochracea and C. elata.

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72 citations


Journal ArticleDOI
01 Jan 1985-Phytochemistry
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.

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Abstract: An amorphous phenanthrene, named nudol has been isolated from Eulophia nuda , Eria carinata and E. stricta . It was identified as 2,7-dihydroxy-3,4-dimethoxyphenanthrene. Synthesis of nudol and its dimethyl ether is described.

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68 citations


Journal ArticleDOI
01 Jan 1990-Phytochemistry
Abstract: Lusianthrin and lusianthridin, two new stilbenoids, were isolated from the orchid Lusia indivisa . The structures of lusianthrin and lusianthridin were established from detailed spectral and chemical evidence.

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61 citations


Journal ArticleDOI
01 Jan 1988-Tetrahedron
Abstract: Flavanthrin, the first dimeric 9,10-dihydrophenanthrene derivative, was isolated from the orchid Eria flava which also yielded the previously reported 9,10-dihydrophenanthrene coelonin ( 2a ). The structure of flavanthrin was established as the 1.1'-dimer ( 1a ) of its congener coelonin from spectral and chemical evidence.

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51 citations


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No. of citations received by the Paper in previous years
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