- 专利标题： METHOD FOR PREPARING TRITYL CANDESARTAN
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申请号： US15578541申请日： 2015-06-05
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公开(公告)号： US20180155326A1公开(公告)日： 2018-06-07
- 发明人: Enmin Lin , Mengjian Mou , Guoliang Tu , Wenfeng Huang
- 申请人： ZHEJIANG HUAHAI PHARMACEUTICAL CO., LTD.
- 申请人地址： CN Linhai, Zhejiang
- 专利权人： ZHEJIANG HUAHAI PHARMACEUTICAL CO., LTD.
- 当前专利权人： ZHEJIANG HUAHAI PHARMACEUTICAL CO., LTD.
- 当前专利权人地址： CN Linhai, Zhejiang
- 国际申请： PCT/CN2015/080867 WO 20150605
- 主分类号： C07D403/10
- IPC分类号： C07D403/10 ; C07D257/04 ; C07D235/26 ; C07F7/22 ; C07B47/00
摘要：
The present invention uses a candesartan cyclic compound as a starting material and performs thereon a three-step reaction of forming tetrazole, hydrolysis and adding a protecting group to directly obtain trityl candesartan without separating an intermediate product via crystallization. The operating process is simple and thus is more applicable to industrial production.
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