The present invention relates to a process for preparing 3-(2-hydroxybenzoyloxy)-4-(trimethylammonio)butyrobetaine hydrochloride of formula (I),
wherein the process comprises reacting 3-hydroxy-4-(trimethylammonio)butyrobetaine or a salt thereof with a 2-alkoxybenzoyl chloride of formula (III),
and where R is selected from benzyl and branched C3-C6 alkyl groups.
The present invention further relates to compounds of formula (II) and salts thereof, where R is selected from benzyl and branched C3-C6 alkyl groups, and to a process for preparing same.
本发明涉及一种制备式(I)的3-(2-羟基苯甲酰氧基)-4-(三甲基
铵)丁基
甜菜碱盐酸盐的方法,其中该方法包括将3-羟基-4-(三甲基
铵)丁基
甜菜碱或其盐与式(III)的2-烷氧基
苯甲酰氯反应,其中R从苯甲基和支链C3-C6烷基组中选择。本发明还涉及式(II)的化合物及其盐,其中R从苯甲基和支链C3-C6烷基组中选择,并涉及制备这些化合物的方法。