申请人:Hoffmann-La Roche Inc.
公开号:US04549019A1
公开(公告)日:1985-10-22
2,4-Disubstituted 6-[3,6-dihydro-1(2H)-pyridyl]pyrimidine-3-oxides of the formula ##STR1## wherein R.sup.1 is lower alkyl or lower alkoxy-lower alkyl, R.sup.2 is hydrogen or --COOR.sup.3 wherein R.sup.3 is lower alkyl or lower alkoxy-lower alkyl, which are important for the preparation of therapeutically valuable 1,2,5,6-tetrahydropyridyl-substituted 2-oxo-2H-[1,2,4]oxadiazolopyrimidinecarbamates, are described. The foregoing oxides of formula I can be prepared by reacting the corresponding arylsulfonyloxy- or alkylsulfonyl-substituted derivatives with 1,2,5,6-tetrahydropyridine.
公式为##STR1##的2,4-二取代的6-[3,6-二氢-1(2H)-吡啶基]嘧啶-3-氧化物,其中R.sup.1是较低的烷基或较低的烷氧基-较低的烷基,R.sup.2是氢或--COOR.sup.3,其中R.sup.3是较低的烷基或较低的烷氧基-较低的烷基,这对于制备具有治疗价值的1,2,5,6-四氢吡啶基取代的2-氧代-2H-[1,2,4]噁二唑嘧啶基氨酯很重要。上述公式I的氧化物可以通过将相应的芳基磺酰氧基或烷基磺酰基取代衍生物与1,2,5,6-四氢吡啶反应制备。