1-{(3-chloro-4-fluoro-benzyl)-[2-(7-methanesulfonylmethyl-1,1-dioxo-1,4-dihydro-1lambda6-benzo[1,2,4]thiadiazin-3-yl)-acetyl]-amino}-1H-pyrrole-2-carboxylic acid allyl ester 、 、
sodium ethanolate 、
盐酸 在
N-{3-[1-(3-chloro-4-fluoro-benzyl)-4-hydroxy-2-oxo-1,2-dihydro-pyrrolo[1,2-b]pyridazin-3-yl]-1,1-dioxo-1,4-dihydro-1λ6-benzo[1,2,4]thiadiazin-7-yl}-methanesulfonamide 作用下,
以
乙醇 、
乙酸乙酯 为溶剂,
反应 12.0h,
以to afford the desired product, N-{3-[1-(3-chloro-4-fluoro-benzyl)-4-hydroxy-2-oxo-1,2-dihydro-pyrrolo[1,2-b]pyridazin-3-yl]-1,1-dioxo-1,4-dihydro-1λ6-benzo[1,2,4]thiadiazin-7-yl}-methanesulfonamide (88.5 mg, 0.156 mmol, 32% yield) as an off-white solid的产率得到N-{3-[1-(3-chloro-4-fluoro-benzyl)-4-hydroxy-2-oxo-1,2-dihydro-pyrrolo[1,2-b]pyridazin-3-yl]-1,1-dioxo-1,4-dihydro-1λ6-benzo[1,2,4]thiadiazin-7-yl}-methanesulfonamide