Studies toward the total synthesis of gambieric acids, potent antifungal polycyclic ethers: convergent synthesis of a fully elaborated GHIJ-ring fragment
作者:Koichi Tsubone、Keisuke Hashizume、Haruhiko Fuwa、Makoto Sasaki
DOI:10.1016/j.tet.2011.05.082
日期:2011.9
A stereocontrolled synthesis of a fully elaborated GHIJ-ring fragment of gambieric acids, which are potent antifungal polycyclic ether natural products, has been accomplished. The synthesis features convergent assembly of the tetracyclic polyether skeleton through aldol coupling/cyclodehydration/reductive etherification processes and stereoselective construction of the J-ring side chain by a CeCl3-promoted
已经完成了立体合成的冈比亚酸的GHIJ环片段的精心制作,这些片段是有效的抗真菌多环醚天然产物。合成的特征是通过羟醛偶联/环脱水/还原醚化过程和通过CeCl 3促进的Julia-Kocienski烯烃J环侧链的立体选择性构建,四环聚醚骨架的聚合组装。