发明名称 |
Preparation of beta -lactam compounds, and intermediates therefor |
摘要 |
A process for preparing a beta -lactam compound of the formula (I): <IMAGE> (I) which comprises cyclization of an azetidinone derivative of the formula: <IMAGE> (II) is provided in which R1 is hydrogen, alkyl which is optionally substituted, or amino which is optionally substituted; R2 is a carboxy-protecting group; and X is alkylene which is optionally intervened by -O- or -S-, and/or which is optionally substituted; and R3 is aryl which is optionally substituted.
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申请公布号 |
US5580976(A) |
申请公布日期 |
1996.12.03 |
申请号 |
US19950425225 |
申请日期 |
1995.04.18 |
申请人 |
SHIONOGI & CO., LTD. |
发明人 |
KUME, MASAHARU;KUBOTA, TADATOSHI |
分类号 |
C07D205/08;C07D477/04;C07D501/04;C07F9/6561;(IPC1-7):C07D205/09;C07D205/095;C07D205/085 |
主分类号 |
C07D205/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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