Biocatalytically assisted preparation of antifungal chlorophenylpropanols
摘要:
Fermenting baker's yeast converts 4'-chloropropiophenone 1 and 3'-chloropropiophenone 2 into enantiopure (S)-(-)-1(4'-chlorophenyl)propan-1-ol (S)-3 and (S)-(+)-1-(3'-chlorophenyl)propan-1-ol (S)-4, respectively. Application of inhibitors and organic solvents as additives enhanced the enantiomeric excesses. Enantiopure compounds (R)-(+)-1-(4'-chlorophenyl)propan-1-of ((R)-3) and (R)-(+)-1-(3'-chlorophenyl)propan-1-ol (R)-4 were prepared by lipase-mediated esterifications of the racemic alcohols. Maximum inhibition of the growth of the phytopathougenic fungus Botrytis cinerea was shown for the (R)-enantiomers. (C) 2002 Elsevier Science Ltd. All rights reserved.