A Practical Stereoselective Synthesis and Novel Cocrystallizations of an Amphiphatic SGLT-2 Inhibitor
作者:Prashant P. Deshpande、Janak Singh、Annie Pullockaran、Thomas Kissick、Bruce A. Ellsworth、Jack Z. Gougoutas、John Dimarco、Michael Fakes、Mayra Reyes、Chiajen Lai、Hidegard Lobinger、Theo Denzel、Peter Ermann、Gerard Crispino、Michael Randazzo、Zenrong Gao、Renee Randazzo、Mark Lindrud、Victor Rosso、Frederic Buono、Wendel W. Doubleday、Simon Leung、Pricilla Richberg、David Hughes、William N. Washburn、Wei Meng、Kevin J. Volk、Richard H. Mueller
DOI:10.1021/op200306q
日期:2012.4.20
stereoselective reduction of a methyl C-aryl peracetylated glycoside using a silyl hydride to set the stereochemistry of the crucial anomeric chiral center. Several novel cocrystalline complexes of 1 with l-phenylalanine and l-proline were discovered. Single-crystal structures of these complexes and several synthetic intermediates have been determined. The l-phenylalanine complex was developed and used to purify
所述的一个实际的合成SGLT-2抑制剂β- ç -芳基- d葡糖苷(1)已被开发。路线采用2,3,4,6-四ö -trimethlysilyl- d -glucano -1,5-内酯作为关键手性砌块,从市售的廉价原料有效地制备,d -gluconolactone和三甲基氯硅烷。合成中的重要步骤是使用甲硅烷基氢化物设定关键的异头手性中心的立体化学,路易斯酸介导的甲基C-芳基过乙酰化的糖苷的立体选择性还原。的若干新颖共结晶态复合物1与升-苯丙氨酸和升脯氨酸被发现。这些配合物和几种合成中间体的单晶结构已经确定。该升苯丙氨酸复杂的开发和用于提纯和分离的API。所有步骤均以千克为单位实施。