Enantioselective synthesis of a key intermediate aldehyde toward the polyene macrolide filipin III, based on a chiral oxazaborolidinone-promoted asymmetric aldol reaction
作者:Syun-ichi Kiyooka、Mostofa A. Hena、Fumitaka Goto
DOI:10.1016/s0957-4166(99)00278-5
日期:1999.7
A versatile preparation of an enantiopure aldehyde useful for the asymmetric total synthesis of filipin III was developed using a chiral oxazaborolidinone-promoted asymmetric aldol reaction with a dithiolane silyl nucleophile. The sign and magnitude of the specific rotation of the aldehyde, (4R,5R)-2,2-dimethyl-5-formyl-4-pentyl-1,3-dioxane, were reconfirmed.
使用与二硫杂环戊烷甲硅烷基亲核试剂的手性草并氮杂硼烷二酮促进的不对称醛醇缩合反应,开发了可用于菲林酯III的不对称全合成的对映体纯醛的通用制备方法。再次确认了醛(4 R,5 R)-2,2-二甲基-5-甲酰基-4-戊基-1,3-二恶烷的比旋度和大小。