A Practical Synthesis of a Diazepinylbenzoic Acid, a Retinoid X Receptor Antagonist
作者:Xinglong Jiang、George T. Lee、Kapa Prasad、Oljan Repič
DOI:10.1021/op800142b
日期:2008.11.21
An optimized convergent synthetic route for the preparation of retinoidXreceptor (RXR) antagonist (1) in an overall yield of 35% is described. The formation of the benzodiazepine was achieved in 85% yield using POCl3 in toluene. The drug substance 14 was obtained by treatment of aryl bromide with vinyl butyl ether in the presence of palladium acetate, DPPP, and cesium carbonate This one-pot operation