CAS: 36923-17-8; 7-Amino-3-Cephem-4-Carboxylic Acid

相似化合物

79349-82-9 1932625-97-2 36923-17-8

上下游产品

CAS号35246-64-1 (6R,7R)-benzhyd... | CAS号35246-65-2 (6R)-3-formyl-8... | CAS号36923-21-4 头孢布烯母核 | CAS号36923-19-0 diphenylmethyl ...

7-氨基-3-氯-3-头孢环-4-羧酸置于ammonium Hydroxide,Sodium Tetrahydroborate,碳酸氢钠,聚甘氨酸,Sodium Iodide,Potassium Hydroxide体系中,用 甲醇,水,丙酮 作为反应溶剂,化学反应 9.5H,反应生成 7-氨基-3-无-3-头孢环-4-羧酸
参考文献:一种头孢唑肟中间体7-Anca的制备方法
标题:一种头孢唑肟中间体7-Anca的制备方法
摘要:本发明提供了一种头孢唑肟中间体7‑anca的制备方法,其以7‑acca为起始原料,依次经过3位双键的还原,碘代反应和消除反应得7‑anca.本发明原料成本低廉,操作步骤简单,反应流程短,所得7‑anca为白色固体粉末,纯度为99.0%以上,产品质量好,适合于工业化生产.

专利信息

专利号:US-5639877-A
优先权日:1993-07-30
标题:Intermediates in the synthesis of cephalosporins
发明人：LUDESCHER JOHANNES; MACHER INGOLF
权利人:BIOCHEMIE GMBH
摘要:Novel amidine salts of 7-Amino-3-hydroxymethyl-3-cephem-4-carboxylic acid (=HACA), particular guanidine and diaza-bicyclo-alkylene salts, are useful as intermediates in the synthesis of cephalosporins.

专利号:US-2007004916-A1
优先权日:2004-01-16
标题:Process for the production of cefotaxime sodium
发明人：JAWEED MUKARRAM SIDDIQUI M; KHAN RASHID A R; YADAV RAM P; KHAN MOHAMMED Y
权利人:WOCKHARDT LTD
摘要:A process for the production of 7-[2-(2-amino-4-thiazolyl)-2-syn-methoxyimino-acetamido]-3-acetoxymethyl-3-cephem-4-carboxylic acid (Cefotaxime) in aqueous isopropyl alcohol is provided. The synthesis provides the product in greater than 99 % HPLC purity.

专利号:DE-69429224-T2
优先权日:1993-07-30
标题:Intermediates for the synthesis of cephalosporins

专利号:EP-0640608-A1
优先权日:1993-07-30
标 题 :Intermediates in the synthesis of cephalosporins

专利号:EP-0640608-B1
优先权日:1993-07-30
标题:Intermediates in the synthesis of cephalosporins

专利号:JP-2939129-B2
优先权日:1993-07-30
标题 :Intermediates in the synthesis of cephalosporins