作者:Emmanuel Roulland、Claude Monneret、Jean-Claude Florent
DOI:10.1016/s0040-4039(03)00749-4
日期:2003.5
Enantioselective construction of the protected carbocycle moiety of the anti-HIV drug carbovir was achieved in 11 steps from (S)-(−)-ethyl lactate. The two key steps are a Claisen [3+3] sigmatropic rearrangement of (3S,4E)-3-(4-methoxy-phenoxymethyl)-hex-4-enoic acid dimethylamide and next, a ruthenium-catalysed ring closure metathesis leading to (1S,4S)-4-(4-methoxy-phenoxymethyl)-cyclopent-2-enol
抗HIV药物卡波韦的受保护碳环部分的对映选择性构建是由(S)-(-)-乳酸乙酯分11步完成的。这两个关键步骤是(3 S,4 E)-3-(4-甲氧基-苯氧基甲基)-己-4-烯酸二甲酰胺的Claisen [3 + 3]σ重排,然后是钌催化的闭环复分解导致(1S,4S)-4-(4-甲氧基-苯氧基甲基)-环戊-2-烯醇。