发明授权
- 专利标题: Process for preparing benzopyran compounds
- 专利标题(中): 制备苯并吡喃化合物的方法
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申请号: US446666申请日: 1995-05-26
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公开(公告)号: US5616721A公开(公告)日: 1997-04-01
- 发明人: Graham Johnson , Neil Smith , Graham R. Geen , Inderjit S. Mann , Vance Novack
- 申请人: Graham Johnson , Neil Smith , Graham R. Geen , Inderjit S. Mann , Vance Novack
- 申请人地址: GB2
- 专利权人: SmithKline Beecham plc
- 当前专利权人: SmithKline Beecham plc
- 当前专利权人地址: GB2
- 优先权: GBX9224922 19921127
- 主分类号: C07C233/24
- IPC分类号: C07C233/24 ; C07D311/00 ; C07C257/04 ; C07D20060101 ; C07D257/04 ; C07D405/04
摘要:
Disclosed herein is a process for preparing a compound of structure (I): ##STR1## which comprises cyclization of a compound of structure (II) ##STR2##
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