Asymmetric synthesis of the C-1-C-8 fragment of leukotriene B4 and C-11-C-20 fragments of leukotriene B4 and 12(S)-hydroxy-5,8,14(Z), 10(E) eicosatetraenoic acid
摘要:
An asymmetric synthesis of the C-1-C-8 fragment of LTB4 based on the reduction of optically active beta-ketosulfoxides is described as well as the asymmetric synthesis of the C-11-C-20 fragments of LTB4 and 12(S)-hydroxy-5,8,14(Z), 10(E) eicosatetraenoic acid (12-HETE) from optically active alpha-sulfinyl expxides.
Asymmetric synthesis of the C-1-C-8 fragment of leukotriene B4 and C-11-C-20 fragments of leukotriene B4 and 12(S)-hydroxy-5,8,14(Z), 10(E) eicosatetraenoic acid
摘要:
An asymmetric synthesis of the C-1-C-8 fragment of LTB4 based on the reduction of optically active beta-ketosulfoxides is described as well as the asymmetric synthesis of the C-11-C-20 fragments of LTB4 and 12(S)-hydroxy-5,8,14(Z), 10(E) eicosatetraenoic acid (12-HETE) from optically active alpha-sulfinyl expxides.
Highly diastereoselective reduction of chiral β-ketosulphoxides under chelation control: application to the synthesis of (R)-(+)-n-hexadecano-1,5-lactone
作者:Hiroshi Kosugi、Hiroshi Konta、Hisashi Uda
DOI:10.1039/c39850000211
日期:——
The presence of zinc chloride in the reduction of chiralβ-ketosulphoxides with di-isobutylaluminium hydride effects high 1,3-asymmetric induction to give β-hydroxysulphoxides; this method can be successfully applied to the synthesis of optically pure 1,4- or 1,5-lactones.