New general synthesis of medium ring-lactones a regioselective β-scission of alkoxyl radicals generated from catacondensed lactols
作者:Hiroshi Suginome、Shinji Yamada
DOI:10.1016/s0040-4020(01)81628-8
日期:1987.1
describe a new general method for the synthesis of medium-sized lactones based on ring-enlargement via a regioselective β-scission of alkoxyl radicals generated by photolysis from the hypoiodites of several catacondensed lactols. The syntheses of 9-membered lactones from 65 fused lactols, 10-membered lactones including a naturally occurring lactone, phoracantholide I, from 66 or 75 fused lactols, and
我们描述了一种新的合成中型内酯的新通用方法,该方法是通过环加成反应,从几个催化缩合的内酯的次碘酸盐进行光解而生成的烷氧基自由基区域选择性β-断环。由65个稠合的内醇合成9元内酯,包括天然内酯的10元内酯,由66个或75个稠合的内醇合成的酞酸酯I和由76个或85个稠合的内醇合成的11元内酯。本方法。这种新方法可能具有应用于较小或较大内酯合成的潜力。