反应详情

Following the procedures of Example 426, 2-(2-isopropyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-1,3a,9-triaza-benzo[e]azulen-8-ol from Example 93 and ethyl 2-hydroxyisobutyrate were reacted and the crude product was subjected to flash chromatography (SiO2, gradient 0-5% methanol in DCM) to give 2-[2-(2-isopropyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-1,3a,9-triaza-benzo[e]azulen-8-yloxy]-2-methyl-propionic acid ethyl ester as a yellow oil (103 mg, 40%). LCMS: RT=3.52 min, [M+H]+=427

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