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.
提供了一种新的全合成过程,产生头孢菌素或青霭霉素类化合物。该过程以甘氨酸酯为起始物质,首先经过反应生成二氢噻嗪,然后与偶氮乙酰氯缩合形成头孢菌素骨架,再脱水生成所需的3-不饱和化合物。随后的还原和酰化步骤类似于已知的化学反应。最终产物是抗菌剂。