Results 261 to 270 of about 326,888 (301)
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Microbial Transformation of Pyrethrosin
Journal of Natural Products, 2001Microbial transformation of the germacranolide pyrethrosin (1) using Rhizopus nigricans NRRL 1477 has resulted in the isolation of 6 alpha-acetoxy-1 beta,4 alpha-dihydroxy-5,7 alpha H,8 beta H-eudesm-11 beta,13-dihydro-8,12-olide (5), a new eudesmanolide-type metabolite, in addition to the previously reported eudesmanolides: 2, 3, 4, and 6.
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Microbial Transformation of Sclareolide
Journal of Natural Products, 1997The microbial transformation of sclareolide (1) by Curvularia lunata afforded five oxidized metabolites identified as 3-ketosclareolide (2), 1 beta-hydroxysclareolide (3), 3 beta-hydroxysclareolide (4), 1 alpha,3 beta-dihydroxysclareolide (5), and 1 beta, 3 beta-dihydroxysclareolide (6).
, Atta-ur-Rahman +2 more
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Microbial transformation of epoxides
Enzyme and Microbial Technology, 1998Enantioselective degradation of racemic epoxides is an interesting method to obtain optically pure epoxides. In this review, an overview is presented on the bioconversion of epoxides in microorganisms. Both the degradation and biosynthesis routes involving epoxides are discussed as well as their usefulness in enantioselective degradation.
Swaving, J., de Bont, J.A.M.
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Microbial Transformations of Isosteviol
Journal of Natural Products, 2002Microbial transformations of the tetracyclic diterpenoid isosteviol (ent-16-ketobeyeran-19-oic acid) (2) have revealed that isosteviol is metabolized by Cunninghamella bainieri, Actinoplanes sp., Mucor recurvatus, and Cunninghamella blakesleeana to yield five new metabolites, ent-11alpha,12alpha-dihydroxy-16-ketobeyeran-19-oic acid (5), ent-11alpha ...
Feng-Lin, Hsu +6 more
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Microbial transformation of kepone
Applied and Environmental Microbiology, 1980Pseudomonas aeruginosa strain KO3 and a mixed aerobic enrichment culture, isolated from sewage sludge lagoon water, were found to aerobically transform the chlorinated insecticide Kepone, yielding monohydro-Kepone. Identification of the product was confirmed by gas chromatography and electron impact mass spectrometry.
S A, Orndorff, R R, Colwell
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Microbial transformation of xanthohumol
Phytochemistry, 2003Microbial transformation of xanthohumol using the culture broth of Pichia membranifaciens afforded three metabolites, (E)-2"-(2"'-hydroxyisopropyl)-dihydrofurano[2",3":4',3']-2', 4-dihydroxy-6'-methoxychalcone, (2S)-2"-(2"'-hydroxyisopropyl)-dihydrofurano[2",3":7,8]-4'-hydroxy-5-methoxyflavanone and (E)-2"-(2"'-hydroxyisopropyl)-dihydrofurano[2",3":2 ...
Wimal H M W, Herath +2 more
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Microbial Transformation of Danazol
Natural Product Letters, 2002Danazol (17beta-hydroxy-17alpha-pregna-2,4-dien-20-yno-[2,3-d] isoxazole) (1) on fermentation with Fusarium lini, Aspergillus niger, and Cephalosporium aphidicola yielded 17beta-hydroxy-2-(hydroxymethyl)-17-alpha-pregn-4-en-20-yn-3-one (2) and 17beta-hydroxy-2-(hydroxymethyl)-17 alpha-pregna-1,4-dien-20-yn-3-one (3), while the fermentation of 1 with ...
M Iqbal, Choudhary +2 more
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Microbial transformation of papaveraldine
Phytochemistry, 2000Preparative-scale fermentation of papaveraldine (1), the known benzylisoquinoline alkaloid, with Mucor ramannianus 1839 (sih) has resulted in a stereoselective reduction of the ketone group and the isolation of S-papaverinol (2) and S-papaverinol N-oxide (3).
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Microbial Transformations of Metals
Annual Review of Microbiology, 1978BIOTRANSFORMA nONS OF TOXIC MET AL CAnONS . Mercury . The mercury cycle in the biosphere .. Biological methylation of mercury . Microbial resistance to mercury and organomercurials .
A O, Summers, S, Silver
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Microbial Transformation of Hypoestenone
Journal of Natural Products, 2001Preparative-scale fermentation of hypoestenone (1) with Mucor ramannianus (ATCC 9628) has resulted in the isolation of 8(9)alpha-epoxyhypoestenone (2) and the new metabolites 8(9)alpha-epoxy-12,13-anhydrohypoestenone (3), 17-hydroxyhypoestenone (4), 13alpha,18-dihydroxyhypoestenone (5), and 13beta,18-dihydroxyhypoestenone (6).
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