A New approach to 1,7-dioxaspiro[5.5]undec-4-enes via metallated allenol ethers. Synthesis of Lacrimin A
作者:Andrew Takle、Philip Kocieński
DOI:10.1016/s0040-4020(01)85578-2
日期:1990.1
Key steps in the first total synthesis of Lacrimin A (2) include (a) the use of methoxyallene as an enone-1,3-dianion equivalent; (b) the use of a new copper-catalysed migratory insertion reaction to construct a tri-substituted alkene stereoselectively; and (c) the use of a Pd(O)-catalysed coupling reaction to generate an isochromanone ring.
Lacrimin A(2)的第一个全合成过程中的关键步骤包括:(a)使用甲氧基烯丙烯作为烯酮-1,3-二价阴离子;(b)使用新的铜催化的迁移插入反应来立体选择性地构建三取代的烯烃;(c)使用Pd(O)催化的偶联反应产生异苯并二氢吡喃酮环。