Elagolix was a gonadotropin-releasing hormone antagonist. It was approved in 2018 by FDA via priority review for clinical treatment of endometriosis. Based on retrosynthetic analysis, five reported synthesis routes of elagolix were summarized. They were compared and evaluated in terms of step numbers, total yields, costs, synthetic conditions and manufacturing safety. At last, the synthetic method of d6-elagolix was introduced. This review would be beneficial to the future process researches of elagolix and its deuterium analogues.

Recent Progress in the Synthesis of Elagolix
Discovery of sodium R-(+)-4-{2-[5-(2-fluoro-3-methoxyphenyl)-3-(2-fluoro-6-[trifluoromethyl]benzyl)-4-methyl-2,6-dioxo-3,6-dihydro-2H-pyrimidin-1-yl]-1-phenylethylamino}butyrate (elagolix), a potent and orally available nonpeptide antagonist of the human gonadotropin-releasing hormone receptor