Katz Lorraine, Steve King, Randolph Greasham, Michel Chartrain
Abstract:A microbial screen identified the yeast Rhodotorula rubra MY 2169 as a suitable biocatalyst for the asymmetric bioreduction of a ketosulfone (5,6 dihydro-6(s)-propyl-4H-thieno[2,3b] thiopyran-4-one-7,7-dioxide) to the corresponding trans-hydroxysulfone. This synthesizer is a precursor to the carbonic anhydrase inhibitor L-685,393, a new drug candidate targeted for the treatment of ocular glaucoma. Process development studies revealed that the rate of bioreduction was sensitive to temperature, pH, solvent conce…
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