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Objective To assess the stabilities of Arg-Gly-Asp-Trp-Arg (RGDWR, designated as RWR), a new patented antithrombotic small peptide, and its derivative with ω-aminocaprylic acid on its N-terminus (ωRWR). Results RWR in rat plasma was decreased by between 32 and 48% after 4 h incubation on ice, indicating its instability in plasma. In contrast, ωRWR in plasma remained at 96–107%. Concentration changes...
Whole cells of Rhodotorula glutinis reduced N-methyl-3-oxo-3-(thiophen-2-yl) propanamide at 30 g/l to (S)-N-methyl-3-hydroxy-3-(2-thienyl) propionamide, an intermediate in the production of (S)-duloxetine, a blockbuster antidepressant drug, in 48 h. The reaction had excellent enantioselectivity (single enantiomer, >99.5% enantiomeric excess [ee]) with a >95% conversion.
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