申请人:SUMIKA FINE CHEMICALS Co., Ltd.
公开号:EP1375502A1
公开(公告)日:2004-01-02
A process for conveniently and efficiently preparing a 2,6-halogenopurine using an inexpensive starting material. A process for preparing a 2,6-dihalogenopurine, comprising treating a 2-amino-6-halogenopurine having a protective group at 7th position or 9th position with a diazotizating agent and a halogen source; and a process for preparing a 9-acyl-2-amino-6-halogenopurine, comprising treating a 2-amino-6-halogenopurine with an acylating agent in the presence of a base.
一种使用廉价起始原料方便高效地制备 2,6-卤代嘌呤的工艺。一种制备 2,6-二卤代嘌呤的工艺,包括用重氮化剂和卤素源处理在第 7 位或第 9 位具有保护基的 2-氨基-6-卤代嘌呤;以及一种制备 9-酰基-2-氨基-6-卤代嘌呤的工艺,包括在碱存在下用酰化剂处理 2-氨基-6-卤代嘌呤。