作者:Robert E. Ireland、James L. Gleason、Laura D. Gegnas、Thomas K. Highsmith
DOI:10.1021/jo951646q
日期:1996.1.1
A total synthesis of FK-506 (1) is presented. The synthesis features a highly convergent approach utilizing a block coupling strategy. Top and bottom half sections of the molecule are coupled by addition of a vinyl cuprate with a spiroenone. The alpha-allyl aldol functionality is revealed by a reductive opening of the spiroenone system. The labile alpha,beta-diketoamide hemiketal portion of the molecule
介绍了FK-506(1)的全合成。该综合具有利用块耦合策略的高度收敛方法。分子的上半部分和下半部分通过添加乙烯基铜酸酯与螺烯酮而偶联。螺环烯酮系统的还原性开放揭示了α-烯丙基醛醇的功能。分子的不稳定的α,β-二酮酰胺半缩酮部分是通过掩蔽的烯二醇的后期生成和氧化制备的。上半部分和下半部分本身是通过较小亚基的偶联而衍生的,从而导致了非常收敛的路线。