三聚甲醛 、 N-benzyl-2(R)-[(4-methoxyphenyl)sulfonylamino]-succinamic acid benzyl ester 生成 benzyl 1-benyl-3-[(4-methoxyphenyl)sulfonyl]-6-oxo-hexahydro-pyrimidine4(R)-carboxylate 、
1-benzyl-3-[(4-methoxyphenyl)sulfonyl]-6-oxo-hexahydro-pyrimidine-4(R)-carboxylic acid