Process for preparing 'Xidinafei' medicine

Application Number: 00108053
Application Date: 2000.06.08
Publication Number: 1283624
Publication Date: 2001.02.14
Priority Information: 1999/6/21 CN 99108193.5
International: A61K31/519;A61P15/08;C07D487/04
Applicant(s) Name: Shenying Medicinal Chemicals Co., Ltd., Hangzhou City
Inventor(s) Name: Zhang Zhiliang
Patent Agency Code: 11223
Patent Agent: wang mengxia
Abstract A process for preparing Xidinafei includes reaction of 5-(5-halosulfuryl-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazole [4,3-d] pyrimidine-7-one on monosalt or polysalt of 1-methyl piperazine, neutralizing and water washing. Its advantages include short reaction time and high output rate.