An inner salt of L-carnitine is prepared by reduction, with a suitable reducing agent, of a compound of formula (I):
1
where X
1
and X
2
, which may be the same or different, are hydroxy, C
1
-C
4
alkoxy, phenoxy, halogen, or X
1
and X
2
, when taken together are an oxygen atom and the resulting compound is a derivative of succinic anhydride; Y is halogen, a mesyloxy or a tosyloxy group, and subsequent treatment with water, then with a base and then with trimethylamine.
一种
L-肉碱内盐的制备方法,通过使用适当的还原剂还原式(I)的化合物制备,其中X1和X2可以相同也可以不同,是羟基、C1-C4烷
氧基、
苯氧基、卤素,或者当X1和X2在一起时,是
氧原子,得到的化合物是
琥珀酸酐的衍
生物;Y是卤素、
甲烷磺
氧基或对
甲苯磺酰
氧基,然后用
水、碱和
三甲胺进行后续处理。