发明授权
US06680384B2 Process for preparing 4,6-diaminopyrimido[5,4-d]pyrimidines
有权
制备4,6-二氨基嘧啶并[5,4-d]嘧啶的方法
![Process for preparing 4,6-diaminopyrimido[5,4-d]pyrimidines](/docs/US/2004-01-20/US06680384B2/abs.jpg.600x600.jpg)
- 专利标题： Process for preparing 4,6-diaminopyrimido[5,4-d]pyrimidines
- 专利标题（中）： 制备4,6-二氨基嘧啶并[5,4-d]嘧啶的方法
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申请号： US10095926申请日： 2002-03-12
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公开(公告)号： US06680384B2公开(公告)日： 2004-01-20
- 发明人: Werner Belzer , Ralf Lock , Werner Rall
- 申请人： Werner Belzer , Ralf Lock , Werner Rall
- 优先权： DE10115921 20010330
- 主分类号： C07D48704
- IPC分类号： C07D48704
![Process for preparing 4,6-diaminopyrimido[5,4-d]pyrimidines](/abs-image/US/2004/01/20/US06680384B2/abs.jpg.150x150.jpg)
摘要：
The present invention relates to a process for preparing 4,6-diaminopyrimido[5,4-d]pyrimidines of formula I, wherein R1 to R4 have the meanings given in claim 1, as well as new intermediate products which are involved in this process.