Novel (R)-oxynitrilase sources for the synthesis of (R)-cyanohydrins in diisopropyl ether
作者:Eero Kiljunen、Liisa T. Kanerva
DOI:10.1016/s0957-4166(97)00080-3
日期:1997.4
Apple, apricot, cherry and plum meal were prepared from the seeds or kernels of mature garden fruits. The preparations as well as almond meal were used as the source of (R)-oxynitrilase for the synthesis of aliphatic and aromatic cyanohydrins in diisopropyl ether in the presence of 0.1 M tartrate buffer [2% (v/v), pH 5.4]. Apple meal as the most favourable of the enzyme preparations accepts also sterically hindered aldehydes (e.g., pivalaldehyde) as substrates, leading to (R)-cyanohydrins with high enantiopurity (usually ee>90%). (C) 1997 Elsevier Science Ltd.