Highly selective silver(I) oxide mediated monoprotection of symmetrical diols
作者:Abderrahim Bouzide、Gilles Sauvé
DOI:10.1016/s0040-4039(97)01328-2
日期:1997.8
Treatment of symmetrical diol with Ag2O and alkyl halide gave the monoprotected derivative in good to excellent yield.
用Ag 2 O和烷基卤处理对称的二醇以良好至优异的产率得到单保护的衍生物。
Total Stereoselective Synthesis of (+)-Goniothalesdiol
作者:M. Carmen Carreño、Gloria Hernández-Torres、Antonio Urbano、Françoise Colobert
DOI:10.1021/ol0523603
日期:2005.11.1
The stereoselective synthesis of (+)-goniothalesdiol (1) was accomplished in nine steps starting from commercially available (-)-(2S,3s)dimethyl D-tartrate (3). The key features were a completely diastereoselective reduction of beta-ketosulfoxide to generate the stereogenic center at C-5 in 7 and formation of the 2,5-cis-substituted tetrahydrofuran ring in 10 from a stereoselective Et3SiH/TMSOTf-promoted reductive cyclization/ deoxygenation.
The Effect of Sulfoxides on the Stereoselective Construction of Tetrahydrofurans: Total Synthesis of (+)-Goniothalesdiol
作者:Gloria Hernández-Torres、M. Carmen Carreño、Antonio Urbano、Françoise Colobert
DOI:10.1002/chem.201002637
日期:2011.1.24
Good to excellent stereoselectivities were achieved in the reductive cyclization (with Et3SiH/trimethylsilyl trifluoromethanesulfonate (TMSOTf)) of enantiopure hydroxy sulfinyl ketones en route to 2,5‐cis‐disubstituted tetrahydrofuran skeletons. Electrostatic effects of the exocyclic sulfoxide, which stabilized the reactive intermediate oxocarbenium conformations, were responsible for the observed