Chemoenzymatic synthesis of trans-dihydrodiol derivatives of monosubstituted benzenes from the corresponding cis-dihydrodiol isomers
作者:Derek R. Boyd、Narain D. Sharma、Nuria M. Llamas、Gerard P. Coen、Peter K. M. McGeehin、Christopher C. R. Allen
DOI:10.1039/b616100f
日期:——
trans-dihydrodiols involves a regioselective hydrogenation and a Mitsunobu inversion of configuration at C-2, followed by benzylic bromination and dehydrobromination steps. The method has also been extended to the synthesis of both enantiomers of the trans-dihydrodiol derivatives of toluene, through substitution of a vinyl bromine atom of the corresponding trans-dihydrodiol enantiomers derived from bromobenzene
对映体纯的反式二氢二醇已通过化学酶促反应从相应的顺式二氢二醇代谢物获得,该顺式二氢二醇代谢物是通过双加氧酶催化的芳烃在单取代苯底物的2,3-键处进行顺二羟基化而获得的。这种普遍适用的七步合成反式二氢二醇的路线包括区域选择性氢化和C-2处构型的Mitsunobu转化,然后进行苄基溴化和脱氢溴化步骤。通过取代衍生自溴苯的相应的反式二氢二醇对映体的乙烯基溴原子,该方法还扩展到甲苯的反式二氢二醇对映体的两种对映体的合成。通过将氢解反应和diMTPA酯非对映异构体拆分步骤纳入合成路线,