The disclosure provides processes for preparing a compound of formula I, comprising reacting a compound of formula II with an aqueous acid in a solvent and at a temperature sufficient for at least about 48 hours to produce a compound of formula I: wherein, R1-R5 are defined herein. Also provided are D-metyrosine prepared according to the processes described herein and compositions comprising the D-metyrosine provided herein.
该披露提供了制备式I化合物的过程,包括将式II化合物与溶剂中的
水酸反应,在足够温度下反应至少约48小时,以产生式I化合物:其中,R1-R5在此处被定义。还提供了根据此处描述的过程制备的D-甲基
酪氨酸,以及包含所提供的D-甲基
酪氨酸的组合物。