作者:Jakob Nilsson、Ritha Gidlöf、Martin Johansson、Olov Sterner
DOI:10.1016/j.tet.2012.02.065
日期:2012.4
A synthetic route to lactam analogues of the fungal STAT3 inhibitor galiellalactone is presented. The synthesis involves a one-pot tosylamide amide coupling/intramolecular Michael addition and an introduction of an α,β-unsaturation, regioselectively directed by the tosyl functionality. An iodolactonization of the octahydroindolizine 9 and a re-opening of the lactone were employed for introducing an
提出了合成真菌STAT3抑制剂加利拉内酯类似物的内酰胺类似物的途径。合成涉及一锅甲苯磺酰胺酰胺偶联/分子内迈克尔加成和α,β-不饱和度的引入,其由甲苯磺酰基官能团区域选择性地引导。八氢吲哚嗪9的碘内酯化和内酯的重新开放被用于引入碘取代基,从而有助于使用铃木(Suzuki)交叉偶联制备8-取代的类似物(例如4)。