
doi: 10.1248/cpb.55.682
pmid: 17409573
The microbial transformation of a steroidal alkaloid, dictyophlebine (1) with Rhizopus stolonifer (ATCC 10404) afforded three oxidized metabolites 2-4. Compound 2 was found to be a new product. These metabolites were structurally characterized on the basis of modern spectroscopic techniques. Their inhibitory activity towards acetyl- and butyrylcholinesterase has been evaluated and the new product 2 has been found to be more potent than the parent compound and other metabolites.
Spectrometry, Mass, Electrospray Ionization, Magnetic Resonance Spectroscopy, dictyophlebine, Spectrophotometry, Ultraviolet, Steroids, oxidized metabolite, cholinesterase inhibition, Rhizopus stolonifer, Biotransformation, Rhizopus
Spectrometry, Mass, Electrospray Ionization, Magnetic Resonance Spectroscopy, dictyophlebine, Spectrophotometry, Ultraviolet, Steroids, oxidized metabolite, cholinesterase inhibition, Rhizopus stolonifer, Biotransformation, Rhizopus
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