High diastereoselection in the aldol reaction of the bistrimethylsilyl enol ether of methyl acetoacetate with 2-benzyloxyhexanal: synthesis of (–)-pestalotin
摘要:
Aldol condensation of the bistrimethylsilyl enol ether of methyl acetoacetate, compound 2, with 2-benzyloxyhexanal 3c affords highly selectively (99:1) the syn-aldol adduct 4c in the presence of titanium tetrachloride. The stereocontrolled synthesis of (-)-pestalotin 7 has been achieved.
Highly diastereoselective titanium tetrachloride-mediated aldol condensation of the bistrimethylsilyl enol ether of acetoacetic ester with 2-benzyloxyhexanal. A synthesis of (–)-pestalotin
作者:Hisahiro Hagiwara、Katsuhiko Kimura、Hisashi Uda
DOI:10.1039/c39860000860
日期:——
Titaniumtetrachloride-mediated aldol condensation of the bistrimethylsilyl enol ether of methyl acetoacetate (1) with 2-benzyloxyhexanal (3) gives highly selectively (99 : 1) the syn aldol adduct (5); the stereocontrolled synthesis of (–)-pestalotin (9) has been accomplished.
High diastereoselection in the aldol reaction of the bistrimethylsilyl enol ether of methyl acetoacetate with 2-benzyloxyhexanal: synthesis of (–)-pestalotin
作者:Hisahiro Hagiwara、Katsuhiko Kimura、Hisashi Uda
DOI:10.1039/p19920000693
日期:——
Aldol condensation of the bistrimethylsilyl enol ether of methyl acetoacetate, compound 2, with 2-benzyloxyhexanal 3c affords highly selectively (99:1) the syn-aldol adduct 4c in the presence of titanium tetrachloride. The stereocontrolled synthesis of (-)-pestalotin 7 has been achieved.