Design, Development, and Scale-Up of a Selective <i>meso</i>-Epoxide Desymmetrization Process
作者:David L. Varie、Christopher Beck、Sandra K. Borders、Molly D. Brady、Jason S. Cronin、Tracy K. Ditsworth、David A. Hay、David W. Hoard、Richard C. Hoying、Ryan J. Linder、Richard D. Miller、Eric D. Moher、Jacob R. Remacle、John A. Rieck、David D. Anderson、Paul N. Dodson、Mindy B. Forst、Duane A. Pierson、Joseph A. Turpin
DOI:10.1021/op060225f
日期:2007.5.1
converted to ketone 2b, a key intermediate in a new asymmetric synthesis of LY459477. Chiral diamine 17 was prepared from a readily available chiral precursor, (R)-α-methylbenzylamine, and could be recovered from the reaction mixture and reused. Studies performed to probe the mechanism of the rearrangement reaction of epoxide 4b showed that diamine 17 provided an optimal combination of selectivity and scaleability