Synthesis of the ABC Ring System of Azaspiracid. 1. Effect of D Ring Truncation on Bis-spirocyclization
作者:Rich G. Carter、T. Campbell Bourland、David E. Graves
DOI:10.1021/ol026033w
日期:2002.6.1
[reaction: see text] Synthesis of a spirocyclization precursor with a truncated D ring has been accomplished. Subsequent bis-spirocyclization induced the formation of equal amounts of the natural transoidal 10R,13R bis-spirocycle and its cisoidal 10R,13S epimer under an apparent thermodynamically controlled process.
[反应:见正文]具有截短的D环的螺环化前体的合成已完成。随后的双螺环化作用在明显的热力学控制过程中诱导了等量的天然环式10R,13R双螺环及其顺式10R,13S差向异构体的形成。