Total Synthesis of Clavepictines A and B. Diastereoselective Cyclization of δ-Aminoallenes
作者:Jae Du Ha、Jin Kun Cha
DOI:10.1021/ja9925958
日期:1999.11.1
The stereocontrolled total synthesis of (−)-clavepictine A (1A) and (+)-clavepictine B (1B) has been accomplished in an enantioselective fashion, which has unequivocally established the absolute configuration of 1A and 1B. The pivotal step in the synthesis is diastereoselective silver(I)-promoted cyclization of δ-amino allenes. Another key method includes cross-coupling of enol triflates of N-acyl