Synthesis of 2-carbamoylmethyl-6-β-D-ribofuranosylpyridine with the aid of a Pd(0)-catalyzed reaction
作者:Eric De Vos、Eddy L. Esmans、Frank C. Alderweireldt、Jan Balzarini、Erik De Clercq
DOI:10.1002/jhet.5570300513
日期:1993.10
was synthesized from 2-bromo-6-(2,4:3,5-di-O-benzylidenepentitol-1-yl)pyridine or 2-(2,4:3,5-di-O-benzylidenepentitol-1-yl)-6-iodopyridine by means of a tetrakis(triphenylphosphine)palladium(O)-catalyzed reaction with Reformatsky's reagent. Subsequent ammonolysis and mesylation of the D-altro-ethoxycarbonylmethyl compound gave D-altro-2-carbamoylmethyl-6-(1-O-mesyl-2,4:3,5-di-O-benzylidenepentitol-l-yl)pyridine
由2-溴-6-(2,4:3,5)合成D-Allo / D-altro-2-(2,4:3,5-二-O-亚苄基戊烯醇-1-基)-6-乙氧基羰基甲基吡啶-二-O-苄基亚戊醇-1-基)吡啶或2-(2,4:3,5-二-O-苄基亚戊醇-1-基)-6-碘吡啶借助于四(三苯基膦)钯(O) -与Reformatsky试剂的催化反应。随后将D-altro-乙氧基羰基甲基化合物氨解和甲磺酰化,得到D-altro-2-氨基甲酰基甲基-6-(1 - O-甲磺酰基-2,4:3,5-二-O-苄叉亚戊醇-1-基)吡啶,其中将其环化为2-氨基甲酰基甲基-6-β-D-呋喃呋喃糖基吡啶。