Amino acids as precursors to indolizidine alkaloids. DPPA-promoted decarbonylation of a bicyclic amino acid: An easy entry to hydroxylated indolizidines
作者:María J. Martín-López、Francisco Bermejo-González
DOI:10.1016/s0040-4039(00)78513-3
日期:1994.11
The synthesis of 8,8a-trans-8-hydroxy-indolizidine 12 from (D,L)-pipecolinic acid by two alternative routes is described. The stereospecific decarbonylation of the bicyclic carboxyamide 9 promoted by diphenylphosphorazidate (DPPA) is the key step of our strategy. The bicyclic enamide 10 is described as a valuable intermediate in the synthesis of hydroxylated indolizidines.