A process for the preparation of a compound of the formula ##STR1## in which R is hydrogen, alkoxy, alkylamino, dialkylamino or an optionally substituted radical from the group consisting of alkyl, cycloalkyl, aralkyl and aryl, R.sup.1 is an optionally substituted radical from the group consisting of alkyl, alkoxy, alkylthio, mono- or dialkylamino and phenyl, R.sup.2 is optionally substituted alkyl, and Y is oxygen or sulphur, comprising (a1) reacting a compound of the formula ##STR2## with ##STR3## or with R.sup.5 COOH in which R.sup.5 is R except for hydrogen, or equivalent, to produce ##STR4## oxidizing that compound or its salt to ##STR5## and phosphorylating. Several of the intermediates are new.
制备公式##STR1##化合物的方法,其中R为氢、烷氧基、烷基
氨基、二烷基
氨基或从烷基、环烷基、芳基和芳基中选择性取代的基团,R.sup.1为从烷基、烷氧基、烷基
硫基、单烷基或二烷基
氨基和苯基中选择性取代的基团,R.sup.2为选择性取代的烷基,Y为氧或
硫,包括(a1)将公式##STR2##的化合物与##STR3##或与R.sup.5 COOH反应,其中R.sup.5为除氢外的R或等效物,以产生##STR4##氧化该化合物或其盐至##STR5##并
磷酸化。其中的几个中间体是新的。