作者:Frederick Cohen、Larry E. Overman、Sylvie K. Ly Sakata
DOI:10.1021/ol991269u
日期:1999.12.1
[formula: see text] The first enantioselective total synthesis of a batzelladine alkaloid is described. The central reaction in the synthesis of (-)-batzelladine D (2) is a tethered Biginelli condensation of a guanidine aldehyde and an acetoacetic ester to generate a 7-substituted-1-iminohexahydropyrrolo-[1,2-c]pyrimidine intermediate having the anti stereochemistry of the methine hydrogens flanking
[式:见正文]描述了巴兹拉定生物碱的第一对映选择性全合成。(-)-batzelladine D(2)合成中的中心反应是胍醛和乙酰乙酸酯的束缚Biginelli缩合反应,生成7-取代的-1-亚氨基六氢吡咯并-[1,2-c]嘧啶中间体吡咯烷氮侧面的次甲基氢的抗立体化学。