Manufacturing Process Development of Tegoprazan as a Potassium-Competitive Acid Blocker (P-CAB)
Abstract
Tegoprazan, a selective potassium-competitive acid blocker, was approved in 2018 in the Republic of Korea for the treatment of gastroesophageal reflux disease (GERD), erosive esophagitis (EE), and nonerosive reflux disease (NERD). The complexity of tegoprazan, which contains a 4,6-disubstituted 1 H -benzo[ d ]imidazole core and a chiral chromanol moiety, makes it a challenging molecule to prepare on a commercial scale. An efficient and economical route of the key intermediates and a much improved end-game for tegoprazan were developed.
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