发明名称 |
PROCESS FOR PRODUCING ERYTHROMYCIN DERIVATIVE |
摘要 |
A method for preparing a fumarate salt of a compound represented by Formula (II): <CHEM> (wherein R1 represents a hydrogen atom or a lower alkyl group, and R2 represents a lower alkyl group), which comprises carbamating a compound represented by Formula (I): <CHEM> (wherein R1 represents a hydrogen atom or a lower alkyl group), removing all carbamate groups from this compound, alkylating the nitrogen atom at the 3'-position of the desosamine ring in the resulting compound to give the compound represented by Formula (II), and converting this compound into a fumarate salt, wherein the compound represented by Formula (I) is carbamated in the presence of a cyclic ether or a carboxylic ester. This method enables efficient preparation of high-quality erythromycin derivatives.
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申请公布号 |
EP1314737(A1) |
申请公布日期 |
2003.05.28 |
申请号 |
EP20010961253 |
申请日期 |
2001.08.31 |
申请人 |
CHUGAI SEIYAKU KABUSHIKI KAISHA |
发明人 |
SHIMIZU, HITOSHI;TSUZAKI, KANAME;KURITA, MITSUHIRO |
分类号 |
A61P1/00;C07H17/08;(IPC1-7):C07H17/08 |
主分类号 |
A61P1/00 |
代理机构 |
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主权项 |
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地址 |
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