7-chloro-6-((2R,6S)-2,6-dimethylmorpholino)-3-(2-methylthiazol-5-yl)isoxazolo[4,5-b]pyridine-5-carbaldehyde 、
巴比妥酸 在
crude mixture 、
甲醇 作用下,
以
异丙醇 为溶剂,
反应 48.0h,
以gave 45 mg of the title compound的产率得到(2R,4S,4aS)-rel-11-Chloro-2,4-dimethyl-8-(2-methylthiazol-5-yl)-2,4,4a,6-tetrahydro-1H,1'H-spiro[isoxazolo[4,5-g][1,4]oxazino[4,3-a][1,5]naphthyridine-5,5'-pyrimidine]-2',4', 6'(3H)-trione