Catalytic Enantioselective Decarboxylative Allylations of a Mixture of Allyl Carbonates and Allyl Esters: Total Synthesis of (−)- and (+)-Folicanthine
作者:Santanu Ghosh、Saikat Chaudhuri、Alakesh Bisai
DOI:10.1002/chem.201502878
日期:2015.11.23
A highly enantioselective decarboxylative allylation of a mixture of enol carbonates and allyl esters has been achieved. The strategic viability of this methodology has been demonstrated through the total synthesis of cyclotryptamine alkaloids (−)‐ and (+)‐folicanthine (1 a) and the formal total synthesis of (−)‐chimonanthine (1 b), (+)‐calycanthine (1 c), and (−)‐ditryptophenaline (1 d).
已经实现了烯醇碳酸酯和烯丙基酯的混合物的高度对映选择性脱羧烯丙基化。该方法的战略可行性已通过环色胺生物碱(-)-和(+)-叶黄嘌呤(1 a)的正式合成以及(-)-Chimonanthine(1 b),(+)- calycanthine(1 c)和(-)-detryptophenaline(1 d)。