申请人:Archifar Industrie Chimiche del Trentino S.p.A.
公开号:US03963705A1
公开(公告)日:1976-06-15
A process for the preparation in homogeneous phase and in quantitative yield of 3-iminomethyl derivatives of rifamycin SV useful as antibiotic agents. Rifamycin S is reacted in an organic solvent to give a solution of 1,3-oxazino-(5,6-c) rifamycins which is treated with an organic solvent at a pH from 4 to 6. The aqueous phase is discharged and the organic phase is treated with an amine under basic conditions, the desired derivatives being finally isolated from this organic phase according to usual techniques.
一种制备利福霉素SV的3-亚甲基亚胺衍生物的工艺,该工艺在均相条件下且收率量化。利福霉素S在有机溶剂中反应,得到1,3-噁唑烷-(5,6-c)利福霉素的溶液,该溶液在pH为4至6的有机溶剂中处理。水相被排放,有机相在碱性条件下与胺反应,最终根据常规技术从有机相中分离所需的衍生物。