Ceftibuten: Development of a Commercial Process Based on Cephalosporin C. Part III. Process for the Conversion of 3-Exomethylene-7(<i>R</i>)-glutaroylaminocepham-4-carboxylic Acid 1(<i>S</i>)-Oxide to Ceftibuten
作者:Ermanno Bernasconi、Junning Lee、Loris Sogli、Derek Walker
DOI:10.1021/op010071y
日期:2002.3.1
3-exomethylene-7(R)-glutaroylaminocepham-4-carboxylic acid 1(S)-oxide (3) from fermented cephalosporin C broth via enzyme transformations and electrochemical reduction without isolation of any precursors. In this paper we describe the efficient recovery of 3 from aqueous solution, by extractive esterification employing diphenyldiazomethane, and the conversion of the obtained bis(diphenylmethyl) ester (4) into
上述论文(Bernasconi, E.;Lee, J.;Roletto, J.;Sogli, L.;Walker, D. Org. Process Res. Dev. 2002, 6, 152 和 Bernasconi, E.;Genders, D. ; Lee, J.; Longoni, D.; Martin, CR; Menon, V.; Roletto, J.; Sogli, L.; Walker, D.; Zappi, G.; Zelenay, P.; Zhang, H. Org . Process Res. Dev. 2002, 6, 158) 描述了一种用于制备 3-exomethylene-7(R)-glutaroylaminocepham-4-carboxy acid 1(S)-oxide (3) 的高产全水性方法通过酶转化和电化学还原从发酵的头孢菌素 C 肉汤中提取,无需