作者:Andreas Kreuzer、Sabine Kerres、Thomas Ertl、Hannelore Rücker、Sabine Amslinger、Oliver Reiser
DOI:10.1021/ol401473v
日期:2013.7.5
their biological evaluation is reported, featuring a new strategy for the asymmetric construction of γ-butyrolactones with stereogenic side chains in the 4-position. Starting from the renewable resource methyl 2-furoate, the sesquiterpene lactone was synthesized in 9 steps and 4.8% overall yield via an asymmetric cyclopropanation and two diastereoselective nucleophile additions making use of a donor-
报道了Arteludovicinolide A任一对映异构体的首次全合成及其生物学评估,其特征为具有4-位立体异构侧链的γ-丁内酯的不对称构建的新策略。从可再生资源2-糠酸甲酯开始,倍半萜烯内酯通过不对称环丙烷化和两个非对映选择性亲核试剂的加成,通过9个步骤和4.8%的总收率进行合成,利用供体-受体-环丙烷-内酯化级联反应。在非细胞毒性浓度(≤10μM)(+) - 1被发现具有较高的15倍的抗炎活性(4.87±1.1μM)比以前为≥45μM浓度的报道。