2-methyl-3-(4-methyl-3-oxo-2,3,4,10-tetrahydro-9-oxa-1,2,4a-triazaphenanthren-6-ylamino)azetidine-1-carboxylic acid tert-butyl ester 、
三氟乙酸 以
二氯甲烷 为溶剂,
反应 2.0h,
以to give 4-methyl-6-(2-methyl-azetidin-3-ylamino)-2,10-dihydro-9-oxa-1,2,4a-triaza-phenanthren-3-one trifluoroacetic acid (0.012 g, 100%) LC/MS (Table 1, Method 5) Rt=1.582 min.的产率得到4-methyl-6-(2-methylazetidin-3-ylamino)-2,10-dihydro-9-oxa-1,2,4a-triazaphenanthren-3-one trifluoroacetic acid