Total synthesis of (±)-otonecine, a necine base of pyrrolizidine alkaloids
作者:Haruki Niwa、Youchi Uosaki、Kiyoyuki Yamada
DOI:10.1016/s0040-4039(00)94186-8
日期:1983.1
An Improved Synthesis of (±)-Otonecine and a Synthesis of a 12-Membered Otonecine Diester
作者:Haruki Niwa、Tomoyo Sakata、Kiyoyuki Yamada
DOI:10.1246/bcsj.67.2345
日期:1994.8
(±)-4-Methyl-1-phenylthio-8-oxa-4-azabicyclo[5.2.1]decane-9,10-dione was efficiently converted into (±)-otonecine, which was regioselectively coupled with (E)-2-ethylidenehexanedioic acid to give a 12-membered otonecine diester.