Catalytic Asymmetric Synthesis of an HIV Integrase Inhibitor
作者:Yong-Li Zhong、Shane W. Krska、Hua Zhou、Robert A. Reamer、Jaemoon Lee、Yongkui Sun、David Askin
DOI:10.1021/ol802604v
日期:2009.1.15
An efficient synthesis of HIVintegraseinhibitor (S)-(−)-1 via a unique asymmetric hydrogenation of a mixture of imines/enamine 5a−5b/5c is described. Hydrogenation of the imines/enamine by a Rh(I)−Josiphos complex afforded 6 in 90% yield and 90% ee. Amide formation completed the synthesis of 1 in 58% overall yield from 2, which is readily available from 3,4-dihydro-2H-pyran in a seven-step sequence