作者:Maria Pérez、Carlos Ramos、Lucia Massi、Silvia Gazzola、Chiara Taglienti、Nihan Yayik、Elies Molins、Antonio Viayna、F. Javier Luque、Joan Bosch、Mercedes Amat
DOI:10.1021/acs.orglett.7b01818
日期:2017.8.4
A three-step procedure for the enantioselective synthesis of spiro[indolizidine-1,3′-oxindoles], consisting of a stereoselective cyclocondensation reaction between (S)-tryptophanol and a prochiral or racemic δ-oxoester, bromination of the resulting oxazolopiperidone lactam, and a final stereoselective spirocyclization, is reported.
对映体合成螺[ indolizidine-1,3' -oxindoles]的三步程序,包括(S)-色氨酸与前手性或外消旋δ-氧酸酯之间的立体选择性环缩合反应,溴化生成的恶唑并哌啶酮内酰胺,并报道了最终的立体选择性螺环化。