Asymmetric Synthesis of <i>anti-</i>Aldol Segments via a Nonaldol Route: Synthetic Applications to Statines and (−)-Tetrahydrolipstatin
作者:Arun K. Ghosh、Khriesto Shurrush、Sarang Kulkarni
DOI:10.1021/jo900642f
日期:2009.6.19
An asymmetric synthesis of anti-aldol segments via a nonaldol route is described. The strategy involves a highly diastereoselective synthesis of functionalized tetrahydrofuran derivatives from optically active 4-phenylbutyrolactone. Treatment of the tetrahydrofuran derivatives with a Lewis acid and acetic anhydride provided the corresponding ring-opened styrene derivatives. Oxidative cleavage of the
描述了通过非醛醇途径的抗醛醇链段的不对称合成。该策略涉及从光学活性 4-苯基丁内酯高度非对映选择性合成官能化四氢呋喃衍生物。用路易斯酸和乙酸酐处理四氢呋喃衍生物,得到相应的开环苯乙烯衍生物。苯乙烯衍生物的氧化裂解提供了获得抗羟醛链段的途径。他汀衍生物和胰脂肪酶抑制剂 (-)-四氢脂肪酶抑制剂的合成证明了该方法的实用性。