专利号:US-10532058-B2 优先权日:2015-09-08 标 题:Process for preparing ceftolozane from 7-aminocephalosporanic acid (7-ACA) 发明人:FISCHER MICHAEL; FELZMANN WOLFGANG; HUETZ RONNY; LANGNER MARTIN; ENDL BIRGIT 权利人:SANDOZ AG 摘要:The present invention relates to a highly convergent method for the synthesis and purification of ceftolozane and intermediates starting from 7-aminocephaiosporanic acid (7-ACA).