Convergent Synthesis of Taxol Skeleton via Decarbonylative Radical Coupling Reaction
作者:Hiroaki Matoba、Takahiro Watanabe、Masanori Nagatomo、Masayuki Inoue
DOI:10.1021/acs.orglett.8b03302
日期:2018.12.7
The highly oxygenated 6/8/6-membered ABC-ring 2 of taxol was assembled in a convergent fashion. A decarbonylative radical reaction between α-alkoxyacyl telluride 4 and cyanocyclohexenone 5 linked the A- and C-rings and stereoselectively installed the C2- and C3-tertiary carbon centers of 3. After the C8-quaternary stereocenter was constructed, the C9-methyl ketone and the C11-vinyl triflate of 30 participated
紫杉醇的高度氧化的6/8/6元ABC环2以会聚方式组装。α-烷氧基酰基碲化物之间的decarbonylative自由基反应4和cyanocyclohexenone 5连接的A和C形环和立体选择性地安装的C2-和C3-叔碳中心3。的C8-季立体构造后,C9-甲基酮和的C11-乙烯基三氟甲磺酸酯30参与的Pd(0)的八元B环的环化促进的,从而产生了紫杉酚骨架2。