Convenient syntheses of (2R,3S,4R)-3-(tert-butyldimethylsilanyloxy)-2,4-dimethyl-5-oxopentanoic acid methoxymethylamide from methacrolein. Preparation of C1–C7 and C17–C24 fragments of (+)-discodermolide
作者:Billy W. Day、Cyrous O. Kangani、Kwasi S. Avor
DOI:10.1016/s0957-4166(02)00261-6
日期:2002.6
Two new highly stereoselective routes to (2R,3S,4R)-3-(tert-butyldimethylsilanyloxy)-2,4-dimethyl-5-oxopentanoic acid methoxymethylamide, an important intermediate in natural product synthesis, are described. Both schemes are considerably shorter and less expensive than methods previously reported. The title compound was then converted to direct precursors of C1–C7 and C17–24 fragments of the potent
描述了两种新的高度立体选择性的途径,以生成(2 R,3 S,4 R)-3-(叔丁基二甲基硅烷基氧基)-2,4-二甲基-5-氧戊酸甲氧基甲基酰胺,这是天然产物合成中的重要中间体。与先前报道的方法相比,这两种方案都明显更短且更便宜。然后将标题化合物转化为有效的微管稳定剂(+)-discodermolide的C1-C7和C17-24片段的直接前体。