Chemoenzymatic synthesis of a non-peptide tachykinin NK-2 antagonist
摘要:
The synthesis of a tachykinin NK-2 antagonist (S)-11 has been carried out in four steps starting from the the (S)-(+)-enol acetate 3, which was obtained in 100% e.e. by resolution of the racemic eater with Pseudomonas fluorescens lipase. The absolute configuration of the enol acetate (+)-3 was confirmed by X-ray analysis of the camphanyl derivative 13. (C) 2000 Elsevier Science Ltd. All rights reserved.
Desymmetrisation of prochiral ketones by catalytic enantioselective hydrolysis of their enol esters using enzymes
作者:Andrew J Carnell、Jim Barkley、Amarjit Singh
DOI:10.1016/s0040-4039(97)01817-0
日期:1997.11
Desymmetrisation of 4-cyano-4-phenylcyclohexanone 1 has been achieved by enzyme-catalysed enantioselective alcoholysis with n-butanol of the derived racemic enol acetate 2 in tetrahydrofuran. The absolute configuration of the enol acetate (−)-(S)-2 (100% e.e.) obtained was determined by X-ray analysis of the camphanyl derivative 7.