作者:Seung-Mann Paek、Seung-Yong Seo、Seok-Ho Kim、Jong-Wha Jung、Yong-Sil Lee、Jae-Kyung Jung、Young-Ger Suh
DOI:10.1021/ol0508429
日期:2005.7.1
[reaction: see text]. Unified and highly convergent total syntheses of (+)-macrosphelides A and B are described. Key features of the syntheses include (1) concise synthesis of the optically active delta-hydroxy-gamma-keto alpha,beta-unsaturated acid fragment via the direct addition of a trans-vinylogous ester anion equivalent to the readily available Weinreb amide and (2) facile construction of the
[反应:请参见文字]。描述了(+)-大环内酯A和B的统一且高度收敛的总合成。合成的关键特征包括(1)通过直接添加与容易获得的Weinreb酰胺相当的反式-乙烯基酯阴离子来简并合成旋光性δ-羟基-γ-酮基α,β-不饱和酸片段和(2 )通过分子内腈氧化环加成(INOC)方便地构建大环内酯系列的16元大环内酯核。