4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium chloride hydrate 、 (S)-4'-fluoro-2'-(tetrahydro-2H-pyran-4-yl)-5,6-dihydrospiro[[1,3]oxazine-4,9'-xanthene]-2,7'-diamine 、
5-甲氧基吡嗪-2-甲酸 以
甲醇 为溶剂,
反应 2.5h,
以35 mg的产率得到(S)-N-(2-amino-5'-fluoro-2'-(tetrahydro-2H-pyran-4-yl)-5,6-dihydrospiro[[1,3]oxazine-4,9'-xanthen]-7'-yl)-5-methoxypyrazine-2-carboxamide