Synthesis of PPAR Agonist via Asymmetric Hydrogenation of a Cinnamic Acid Derivative and Stereospecific Displacement of (<i>S</i>)-2-Chloropropionic Acid
作者:Ioannis N. Houpis、Lawrence E. Patterson、Charles A. Alt、John R. Rizzo、Tony Y. Zhang、Michael Haurez
DOI:10.1021/ol050367e
日期:2005.5.1
synthesis of the peroxime proliferator activated receptor (PPAR) alpha,gamma-agonist (1) was accomplished with high enantio- and diastereoselectivity by employing an asymmetric hydrogenation strategy, of an alpha-alkoxy cinnamic acid derivative, to set the C-2 chiral center. A diastereospecific S(N)2 displacement under mild basic conditions established the C-10 stereochemistry without any detectable racemization
过氧化物酶增殖物激活受体(PPAR)α,γ-激动剂(1)的合成通过采用α-烷氧基肉桂酸衍生物的不对称氢化策略设定C-2手性以高对映异构和非对映选择性完成中央。在温和的碱性条件下,非对映体特异性S(N)2取代建立了C-10立体化学,而没有两个可差向异构手性中心的可检测消旋作用。