Synthesis and biological activity of 5-phenylselenenyl-substituted pyrimidine nucleosides
作者:Raymond F. Schinazi、Jack Arbiser、Jung Ja S. Lee、Thomas I. Kalman、William H. Prusoff
DOI:10.1021/jm00157a031
日期:1986.7
derivatives of pyrimidine nucleosides were synthesized by electrophilic addition of phenylselenenyl chloride to the nucleosides under basic conditions. With use of this route, 5-(phenylselenenyl)-6-azauracil was also prepared. These compounds may serve as inhibitors of thymidylate synthase, as potential antiviral and anticancer agents, and as versatile intermediates for the synthesis of 5- or 6-substituted
A convenient and efficient reagent system of arylhydrazine salt-selenium was developed to directly selenizing uracil preparation of 5-selenium uracil. In the presence of this reagent, a variety of uracil/pyrimidine converts to their corresponding 5-arylselanyluracils/5-selenopyrimidine with good yield and high regioselectivity. Elemental selenium of commercially accessible, stable, affordable, and
efficient iodide-catalyzed/hydrogen peroxide mediated sulfenylation and selenylation of unprotected uracil and its derivatives with simple thiols and diselenides was established. This coupling tolerates a broad variety of functional groups to provide diverse 5-sulfur/selenium-substituted uracilderivatives in good to excellent yields (up to 93%).