Invention Grant
US09388184B2 Intermediate of Ertapenem, a composition comprising the same and preparation methods thereof 有权
呃替培南的中间体,其组合物及其制备方法

Intermediate of Ertapenem, a composition comprising the same and preparation methods thereof
Abstract:
Intermediates of Ertapenem of formula 2a wherein Np represents (I) or (II), and P1 and P2 represent carboxyl protecting groups, and their preparation methods. Compound 2a prepared by the present methods in solid form is amorphous. The present invention also relates to a composition comprising at least 95% of the intermediate of Ertapenem of formula 2a.
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