作者:Luiz C. Dias、Gliseida Z. Melgar、Luciana S.A. Jardim
DOI:10.1016/j.tetlet.2005.05.004
日期:2005.6
The bicyclo[4.3.0]nonane (C11–C21) fragment of stawamycin has been prepared by a sequence involving 11 steps (10% overall yield) from methyl (R)-(−)-3-hydroxy-2-methylpropionate. Key steps are a Pd-catalysed Stille coupling reaction between a vinyl iodide and a vinyl stannane followed by an intramolecular Diels–Alder cycloaddition reaction to give the desired adduct as the major isomer in 21% overall
司他霉素的双环[4.3.0]壬烷(C 11 –C 21)片段已通过涉及(R)-(-)-3-羟基-2-甲基丙酸甲酯的11步(总收率10%)的序列制备。关键步骤是在碘乙烯和乙烯基锡之间进行Pd催化的Stille偶联反应,然后进行分子内Diels-Alder环加成反应,从而以21%的总收率得到所需的加合物作为主要异构体。