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Structural transformation of the steroidal lactone, oxandrolone (1), by suspended-cell cultures of the plant pathogen fungus Rhizopus stolonifer, resulted in the production of three new metabolites. These metabolites were identified as 11α-hydroxyoxandrolone (2), 6α-hydroxyoxandrolone (3) and 9α-hydroxyoxandrolone (4), by different spectroscopic methods and single-crystal X-ray diffraction analysis...
The microbial transformation of (−)-isolongifolol (1) by using the standard two-stage fermentation technique with Fusarium lini afforded polar oxygenated metabolites: 10-oxoisolongifolol (2), 10α-hydroxyisolongifolol (3), and 9α-hydroxyisolongifolol (4). Metabolites 3 and 4 were also formed with the incubation of 1 with Aspergillus niger. All three metabolites were found to be new. Compounds 3 and...
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