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Gymnopusin
Gymnopusin is a phenanthrenediol produced by the orchid '' Bulbophyllum gymnopus''. It is also found in '' Bulbophyllum reptans'' and '' Maxillaria densa''.Phytotoxicity and ultrastructural effects of gymnopusin from the orchid Maxillaria densa on duckweed (Lemna pausicostata) frond and root tissues. Valencia-Islas NA, Paul RN, Shier WT, Mata R and Abbas HK, Phytochemistry, 2002, volume 61, issue 2, pages 141-148, , References External links Gymnopusin at kanaya.naist.jp/knapsack_jsp Phenanthrenoids Orchids {{aromatic-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phenanthrenoids
Phenanthrenoids are chemical compounds formed with a phenanthrene backbone. These compounds occur naturally in plants, although they can also be synthesized. Phenanthrols Phenanthrols are any of five isomeric phenols derived from phenanthrene ( 1-phenanthrol, 2-phenanthrol, 3-phenanthrol, 4-phenanthrol, 9-phenanthrol). These molecules can be biomarkers of smoking and/or PAH worker exposure. Chemistry Under UV irradiation, stilbene and its derivatives undergo intramolecular cyclization to form dihydrophenanthrenes. Natural occurrences Phenanthrenes have been reported from flowering plants, mainly in the family Orchidaceae, and a few in the families Dioscoreaceae, Combretaceae and Betulaceae, as well as in the lower plant class Marchantiophyta (liverworts). The rhizome of ''Dioscorea communis'' contains phenanthrenes ( 7-hydroxy-2,3,4,8-tetramethoxyphenanthrene, 2,3,4-trimethoxy-7,8-methylenedioxyphenanthrene, 3-hydroxy-2,4,-dimethoxy-7,8-methylenedioxyphenanthrene, 2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulbophyllum Gymnopus
''Bulbophyllum gymnopus'' is a species of orchid in the genus ''Bulbophyllum''. The plant produces the phenanthrenediol gymnopusin Gymnopusin is a phenanthrenediol produced by the orchid '' Bulbophyllum gymnopus''. It is also found in '' Bulbophyllum reptans'' and '' Maxillaria densa''.Phytotoxicity and ultrastructural effects of gymnopusin from the orchid Maxillaria densa on ....Structure and synthesis of gymnopusin, a novel phenanthrenediol from the orchid Bulbophyllum gymnopus. Andrew B. Hughes and Melvyn V. Sargent, J. Chem. Soc., 1989, Perkin Trans. 1, pages 1787-1791, References External links The Bulbophyllum-Checklist gymnopus Taxa named by Joseph Dalton Hooker {{Bulbophyllum-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulbophyllum Reptans
''Bulbophyllum reptans'' is a species of orchid in the genus ''Bulbophyllum''. ''B. reptans'' contains the phenanthrenediol gymnopusin (2,7-dihydroxy-3,4,9-trimethoxyphenanthrene), the phenanthrenes confusarin Confusarin is a phenanthrenoid found in the orchids '' Eria confusa'' and '' Bulbophyllum reptans''. It can also be synthesized. References External links Confusarin at kanaya.naist.jp/knapsack_jsp Phenanthrenoids Orchids Methoxy compo ... (2,7-dihydroxy-3,4,8-trimethoxyphenanthrene), 2,7-dihydroxy-3,4,6-trimethoxyphenanthrene and its 9,10-dihydro derivative, flavanthrinin (2,7-dihydroxy-4-methoxyphenanthrene) and its 9,10-dihydro derivative ( coelonin), 3,3′-dihydroxy-5-methoxybibenzyl ( batatasin-III), cirrhopetalanthrin (2,2′,7,7′-tetrahydroxy-4,4′-dimethoxy-1,1′-biphenanthryl), its 9,9′,10,10′-tetrahydro derivative ( flavanthrin) and the dimeric phenanthrenes reptanthrin and isoreptanthrin.Dimeric phenanthrenes from the orchid Bulbophyll ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maxillaria Densa
''Maxillaria densa'', the crowded maxillaria, is a species of orchid ranging from Mexico south to Nicaragua. Gymnopusin is a phenanthrenediol produced by the orchid as well as 2,5-dihydroxy-3,4-dimethoxyphenanthrene, 9,10-dihydro-2,5-dihydroxy-3,4-dimethoxyphenanthrene, 2,7-dihydroxy-3,4-dimethoxyphenanthrene (nudol Nudol is a phenanthrenoid of the orchids ''Eulophia nuda'', ''Eria carinata'', ''Eria stricta ''Eria'' is a genus of orchids with more than 50 species distributed in China, the Himalayas, the Indian Subcontinent, Southeast Asia, New Guinea, Pol ...), 9,10-dihydro-2,7-dihydroxy-3,4-dimethoxyphenanthrene, 2,5-dihydroxy-3,4,9-trimethoxyphenanthrene and 2,7-dihydroxy-3,4,9-trimethoxyphenanthrene.New Phenanthrene Derivatives from Maxillaria densa. Samuel Estrada, Rubén A. Toscano and Rachel Mata, J. Nat. Prod., 1999, volume 62, issue 8, pages 1175–1178, References External links densa Orchids of Central America Orchids of Belize Orchids of Mexic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
