Tetrahedron Asymmetry p. 335 - 338 (1991)
Update date:2022-08-17
Topics:
Holland
Manoharan
Schweizer
Reduction of the carbonyl groups of chromanone and thiochromanone by Mortierella isabellina ATCC 42613 proceeds to give the (S) alcohols in high yield and enantiomeric excess. Benzylic hydroxylation of chroman by this fungus provides (R)-chroman-4-ol, and the (R) enantiomer of thiochroman-4-ol is obtained by bioconversion of thiochromanone or (±)-thiochroman-4-ol by Helminthosporium species NRRL 4671.
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