Patent ID: 11891455
Assignee: GALIMEDIX THERAPEUTICS INC
Field: Pharmaceuticals (Chemistry)
Classification: CPC C  A | IPC A  C

Claim 10:
11. The method of claim 10, optionally further comprising a step of purifying the compound (R)-2-[2-amino-3-(indol-3-yl)propionylamino]-2-methylpropionic acid from step (c) by
(a) dissolving compound (R)-2-[2-amino-3-(indol-3-yl)propionylamino]-2-methylpropionic acid in 5M HCl to provide a HCl solution of the compound and filtering;
(b) adjusting the pH of the filtered solution to about 5.5-5.7 by 10% aqueous NaOH to give a precipitate; and
(c) washing the precipitate with water and ethanol and dried.