Nitrile hydratase enzymes in organic synthesis: Enantioselective synthesis of the lactone moiety of the mevinic acids
作者:Samuel J. Maddrell、Nicholas J. Turner、Alison Kerridge、Andrew J. Willetts、John Crosby
DOI:10.1016/0040-4039(96)01259-2
日期:1996.8
(R)-4-Hydroxy-5-cyanopentene (−)-9, a known precursor of the protected lactonemoiety of the mevinicacids 1, has been prepared in 9 steps from (S)-3-(benzyloxy)-4-cyanobutanoic acid 5 (88% e.e.), which was obtained by the asymmetric 2 step hydrolysis of 3-benzyloxyglutaronitrile 4 involving the successive activity of a nitrile hydratase and an amidase enzyme.
A convenient preparation of optically pure 3-hydroxyglutaric acid derivatives
作者:R. Leclerc、D. Uguen
DOI:10.1016/s0040-4039(00)73032-2
日期:1994.3
The diastereomeric monoamides resulting from condensation of (L)-cysteine with 3-hydroxyglutarodinitrile have been separted by chromatography then transformed in a few steps into either (+) or (-) methyl ester of 4-cyano-3-hydroxybutyric acid.