2,5-Dichloro-4-[5-(4-cyclopropyl-3,4-dihydro-2H-quinoxaline-1-carbonyl)-2-methyl-pyridin-4-yloxy]-benzoic acid → 2,5-Dichloro-4-[5-(4-cyclopropyl-3,4-dihydro-2H-quinoxaline-1-carbonyl)-2-methyl-pyridin-4-yloxy]-N-(1H-tetrazol-5-yl)-benzamide

Participants

Reaction Steps

The title compound was prepared in analogy to Example 39, from 2,5-dichloro-4-[5-(4-cyclopropyl-3,4-dihydro-2H-quinoxaline-1-carbonyl)-2-methyl-pyridin-4-yloxy]-benzoic acid (Example 66) and 5-amino-1H-tetrazole (commercially available, CAS RN 4418-61-5). The compound was purified twice by preparative HPLC (Phenomenex Gemini column) with a gradient of acetonitrile:water (containing 0.05% formic acid) (50:50 to 95:5) to give 17 mg (15%) of the title compound as a white solid. MS (ESI): m/z=563.109 [M+H]+.

Provenance & Evidence