Conformational analysis of the 16-membered epoxyenone and complete stereoselection in the reduction of its C9 carbonyl group, the key reaction in the synthesis of maridonolides
作者:Tomohiro Matsushima、Noriyuki Nakajima、Osamu Yonemitsu、Tadashi Hata
DOI:10.1016/s0040-4020(01)81225-4
日期:1992.1
16-membered epoxyenone (2), the key synthetic intermediate of maridonolides, has two distinct conformational isomers in solution. The conformational analysis of them by virtue of NMR measurement and the profound effect of their conformations on reactivity and stereoselectivity in the reduction of the C9 carbonyl group are discussed.