3-(7-cyclopropyl-4-(R)-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 6-(azetidin-3-ylamino)-7-cyclopropyl-4(R)-methyl-2,10-dihydro-9-oxa-1,2,4a-triaza-phenanthren-3-one trifluoroacetic acid (Example #64-1, Enantiomer 1, SFC (Table 1, Method 1) Rt=4.205 min., 0.291 g, 0.661 mmol, 94%)的产率得到6-(azetidin-3-ylamino)-7-cyclopropyl-4(R)-methyl-2,10-dihydro-9-oxa-1,2,4a-triazaphenanthren-3-one trifluoroacetic acid