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公开(公告)号:US06486320B2
公开(公告)日:2002-11-26
申请号:US09951505
申请日:2001-09-14
IPC分类号: C07D49114
CPC分类号: C07D215/227 , C07C69/734 , C07D215/18 , C07D309/32 , C07D405/12 , C07D471/04
摘要: The present invention relates to a novel process for preparation of camptothecin and of its derivatives by convergent synthesis starting from a 3-(aminomethyl)quinoline derivative and 5-hydroxy-5-ethyl-6-oxo-5,6-dihydropyrancarboxylic acid and to the intermediates obtained.