Biocatalytic deracemization of alkyl-2-hydroxy-4-arylbut-3-ynoates using whole cells of Candida parapsilosis ATCC 7330
摘要:
Racemic alkyl-2-hydroxy-4-arylbut-3-ynoates were deracemized to the (S)-alky1-2-hydroxy-4-arylbut-3-ynoates in excellent enantiomeric excesses (up to >99%) and good isolated yields (up to 81%) with the biocatalyst Candida parapsilosis ATCC 7330. The absolute configuration of the resulting enantiomer was assigned by H-1 NMR using Mosher's method. (C) 2010 Elsevier Ltd. All rights reserved.
Chemoselective Reduction and Transesterification of α-Keto Propargylic Esters Mediated by NaBH<sub>4</sub>and CeCl<sub>3</sub> · 7H<sub>2</sub>O
作者:Thangavel Saravanan、Anju Chadha
DOI:10.1080/00397911.2010.502993
日期:2011.8.15
Abstract An efficient one-pot synthesis of α -hydroxy propargylic esters by chemoselective reduction followed by transesterification using NaBH4 in combination with CeCl3 · 7H2O is described.
Biocatalytic deracemization of alkyl-2-hydroxy-4-arylbut-3-ynoates using whole cells of Candida parapsilosis ATCC 7330
作者:Thangavel Saravanan、Anju Chadha
DOI:10.1016/j.tetasy.2010.11.021
日期:2010.12
Racemic alkyl-2-hydroxy-4-arylbut-3-ynoates were deracemized to the (S)-alky1-2-hydroxy-4-arylbut-3-ynoates in excellent enantiomeric excesses (up to >99%) and good isolated yields (up to 81%) with the biocatalyst Candida parapsilosis ATCC 7330. The absolute configuration of the resulting enantiomer was assigned by H-1 NMR using Mosher's method. (C) 2010 Elsevier Ltd. All rights reserved.