method for preparing a compound of formula (xiii); a method for preparing a compound of formula (xiiia); compound of formula (xiiia); compound of formula (xiii); compound of formula (xiv) or the pharmaceutically acceptable salts thereof; compound of formula (i); compound of formula (xiiia); compound of formula (xiva) or the pharmaceutically acceptable salts thereof; compound of formula (ia); and method of preparing a compound of formula (i) or pharmaceutically acceptable salts thereof.

摘要

METHOD FOR PREPARING A COMPOUND FORMULA (XIII); Method for preparing a compound of formula (Xllla); COMPOUND FORMULA (XIIIa); Compound of Formula (XIII); COMPOUND FORMULA (XIV) OR PHARMACEUTICALLY ACCEPTABLE SALTS THEREOF; COMPOUND FORMULA (1); COMPOUND FORMULA (XIIIa); COMPOUND FORMULA (XIVa) OR PHARMACEUTICALLY ACCEPTABLE SALTS THEREOF; COMPOUND FORMULA (Ia); AND METHOD OF PREPARING A COMPOUND OF FORMULA (1) OR PHARMACEUTICALLY ACCEPTABLE SALTS THEREOF These are new methods for the preparation of the glutamic acid derivatives of formula (1) and the intermediates thereof and the compounds prepared by the new methods. .