Process for preparing di-7-azido cephalosporin compounds
申请人:Merck & Co., Inc.
公开号:US04099000A1
公开(公告)日:1978-07-04
A novel total synthesis process is provided, yielding cephalosporin or penicillin compounds. The process uses as starting material a glycine ester, which first is reacted to yield a dihydrothiazine, and subsequently condensed with azidoacetyl chloride to form the cepham nucleus, then dehydrated to yield the desired 3-unsaturation. Subsequent reduction and acylation steps are analogous to known chemistry. The end products are antibacterial agents.