The invention relates to compounds of the formula
in which
R is an esterifying group
R2 is hydrogen, lower alkyl, lower hydroxyalkyl, lower alkoxyalkyl, lower acyloxyalkyl or tri-lower alkylsilyloxyalkyl, a process for their manufacture and intermediate compounds for their synthesis.
本发明涉及式如下的化合物
其中
R 是酯化基团
R2是氢、低级烷基、低级羟烷基、低级烷氧基烷基、低级酰氧基烷基或三低级烷基
硅氧基烷基;本发明涉及这些化合物的生产工艺以及合成这些化合物的中间体。