Studies toward welwitindolinones: formal syntheses of N-methylwelwitindolinone C isothiocyanate and related natural products
作者:Tsung-hao Fu、William T. McElroy、Mariam Shamszad、Richard W. Heidebrecht、Brian Gulledge、Stephen F. Martin
DOI:10.1016/j.tet.2013.03.010
日期:2013.7
welwitindolinones 5–8 were achieved by the independent synthesis of 79. The synthesis featured a Lewis acid-mediated coupling between a heteroaryl carbinol and bis-TMS enol ether, an intramolecular enolate arylation, and an unprecedented intramolecular allylic alkylation of a γ-acyloxyenone.
正式合成Ñ -methylwelwitindolinoneÇ异硫氰酸酯(4)等几个welwitindolinones 5 - 8分别通过独立合成实现79。该合成以路易斯酸介导的杂芳基甲醇和双-TMS 烯醇醚之间的偶联、分子内烯醇芳基化和前所未有的 γ-酰氧烯酮分子内烯丙基烷基化为特征。