(7-methanesulfonylamino-1,1-dioxo-1,4-dihydro-1λ6-benzo[e][1,2,4]thiadiazin-3-yl)-acetic acid 、
1-(3,3-dimethylbutylamino)-2-methylpyrrolidine-2-carboxylic acid methyl ester 、 、
N,N'-二环己基碳二亚胺 、
二氯甲烷 在
crude product 、
甲醇 、
二氯甲烷 、
1-{(3,3-dimethylbutyl)-[2-(7-methanesulfonylamino-1,1-dioxo-1,4-dihydro-1λ6-benzo[1,2,4]thiadiazin-3-yl)acetyl]amino}-2-methylpyrrolidine-2-carboxylic acid methyl ester 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 3.0h,
以to afford the desired product, 1-{(3,3-dimethyl-butyl)-[2-(7-methanesulfonylamino-1,1-dioxo-1,4-dihydro-1λ6-benzo[1,2,4]thiadiazin-3-yl)-acetyl]-amino}-2-methyl-pyrrolidine-2-carboxylic acid methyl ester (0.249 g, 0.447 mmol, 89.3%)的产率得到1-{(3,3-dimethylbutyl)-[2-(7-methanesulfonylamino-1,1-dioxo-1,4-dihydro-1λ6-benzo[1,2,4]thiadiazin-3-yl)acetyl]amino}-2-methylpyrrolidine-2-carboxylic acid methyl ester