Synthesis of fused pyrrolines by the intramolecular cycloadition of azides application to the pyrrolizidine alkaloids.
作者:William H. Pearson
DOI:10.1016/s0040-4039(00)89182-0
日期:1985.1
Intramolecular 1,3-dipolar cycloaddition of azide 4 proceeds through triazoline 5 and vinyl aziridine 6, resulting in the formation of the 1,5-homodienyl shift product 7 and the tetrahydropyrrolizines 8 and 9. Compound 8 represents a formal total synthesis of supinidine.
叠氮化物4的分子内1,3-偶极环加成通过三唑啉5和
乙烯基氮丙啶6进行,导致形成1,5-同二烯基移位产物7和
四氢吡咯烷酮8和9。化合物8代表了泛素的正式全合成。