Pseudosymmetry in Azabicyclo[2.1.1]hexanes. A Stereoselective Construction of the Bicyclic Core of Peduncularine
作者:Justin R. Ragains、Jeffrey D. Winkler
DOI:10.1021/ol061577+
日期:2006.9.1
the formation of photoadduct 25. While retro-Mannich fragmentation of the "b" bond in 25 leads to the formation of 44 (via 43), with the incorrect relative stereochemistry for the synthesis of peduncularine 5, selective fragmentation of the "a" bond in 25 leads to the formation of 42 (via 26) with the correct relative stereochemistry for the synthesis of 5.
分子内的光环加成41或等价物会导致形成光加合物25。而曼尼希在25中“ b”键的逆曼尼希断裂会导致形成44(通过43),而相对错误的相对立体化学合成了peduncularine 5 ,则25中“ a”键的选择性断裂会导致形成42(通过26),并具有正确的相对立体化学,可合成5。