Synthesis of the H-I-J Tricyclic Fragment of Ciguatoxin, a Marine Polyether Toxin
作者:Tong-Zhu Liu、Minoru Isobe
DOI:10.1055/s-2000-6507
日期:2000.2
During the course of our synthetic studies on ciguatoxin, synthesis of H-I-J tricyclic fragment has been stereoselectively achieved starting from a d-glucal derivative. The key steps are Sonogashira coupling reaction and cobalt complex-mediated oxocane cyclization.
Synthesis of symmetric HIJ-ring model of ciguatoxin
作者:Akihito Nonoyama、Akinari Hamajima、Minoru Isobe
DOI:10.1016/j.tet.2007.03.012
日期:2007.6
addition to form a symmetric eight-membered ether-ketone with syn/trans stereochemistry in selective manner. The corresponding vinyl triflate of this ketone was allowed to convert to the vinyl methyl derivative via cross-coupling reaction. This endo-olefinic tetrahydro-2H-oxocin was selectively reduced to afford α-methyl product. The corresponding exo-olefinic oxocane derivative, on the other hand