Asymmetric synthesis of tetrahydrolipstatin and valilactone
摘要:
The highly diastereoselective aldol reaction between acyl complexes of the iron chiral auxiliary [(eta(5)-C5H5)Fe(CO)(PPh3)] and beta-hydroxy aldehydes (obtained via a Noyori asymmetric hydrogenation), followed by a tandem oxidative decomplexation-cyclisation process gives access to beta-substituted and alpha,beta-disubstituted beta-lactones in high ee. This methodology has been employed in the asymmetric syntheses of tetra hydrolipstatin and valilactone. (C) 2008 Elsevier Ltd. All rights reserved.
Asymmetric synthesis of tetrahydrolipstatin and valilactone
摘要:
The highly diastereoselective aldol reaction between acyl complexes of the iron chiral auxiliary [(eta(5)-C5H5)Fe(CO)(PPh3)] and beta-hydroxy aldehydes (obtained via a Noyori asymmetric hydrogenation), followed by a tandem oxidative decomplexation-cyclisation process gives access to beta-substituted and alpha,beta-disubstituted beta-lactones in high ee. This methodology has been employed in the asymmetric syntheses of tetra hydrolipstatin and valilactone. (C) 2008 Elsevier Ltd. All rights reserved.
An Expeditious Enantioselective Total Synthesis of Valilactone
作者:Yikang Wu、Ya-Ping Sun
DOI:10.1021/jo060844m
日期:2006.7.1
The title compound was synthesized through an expeditious route using Crimmins aldolization to establish the two key stereogenic centers and a hydroxyl group activation (HGA) protocol to construct the anti alpha,beta-disubstituted beta-lactone from the corresponding syn aldol.
US5245056A
申请人:——
公开号:US5245056A
公开(公告)日:1993-09-14
US5399720A
申请人:——
公开号:US5399720A
公开(公告)日:1995-03-21
Asymmetric synthesis of tetrahydrolipstatin and valilactone
作者:Stephen C. Case-Green、Stephen G. Davies、Paul M. Roberts、Angela J. Russell、James E. Thomson
DOI:10.1016/j.tetasy.2008.11.012
日期:2008.11
The highly diastereoselective aldol reaction between acyl complexes of the iron chiral auxiliary [(eta(5)-C5H5)Fe(CO)(PPh3)] and beta-hydroxy aldehydes (obtained via a Noyori asymmetric hydrogenation), followed by a tandem oxidative decomplexation-cyclisation process gives access to beta-substituted and alpha,beta-disubstituted beta-lactones in high ee. This methodology has been employed in the asymmetric syntheses of tetra hydrolipstatin and valilactone. (C) 2008 Elsevier Ltd. All rights reserved.