A novel enantiomeric synthesis from ascorbic acid of (3S,4S)-3-amino-4-carbamoyloxymethyl-2-azetidinone-1-sulfate, an intermediate for an antibiotic compound.
Process for the manufacture of chiral azetidinones
申请人:F. HOFFMANN-LA ROCHE & CO.
Aktiengesellschaft
公开号:EP0111326A1
公开(公告)日:1984-06-20
Manufacture of chiral azetidinones of the general formula
wherein R is an amino protecting group and M ⊕ is a cation, starting from L-ascorbic acid. Several alternatives lead, over a number of novel intermediates, to a novel intermediate of the formula
wherein Rand M ⊕ are as above and R90- is a leaving group, which is treated with an alkali metal carbonate or bicarbonate, whereupon the compound of formula II is recovered from the reaction
The compounds of formula II are useful for preparing the new sulfazecin related antibiotic compound of the formula
This new antibiotic is similar in activity to the antibiotic azthreonam and useful in treating infectious diseases caused by gram negative microorganisms, particularly P. aeruginosa.
制造通式如下的手性氮杂环丁酮
其中 R 是氨基保护基团,M ⊕ 是阳离子,从 L-抗坏血酸开始。通过几种替代方法,经过许多新型中间体,最终得到一种新型中间体,其通式为
其中 Rand M ⊕ 如上所述,R90- 为离去基团,用碱金属碳酸盐或碳酸氢盐处理,然后从反应中回收式 II 化合物。
式 II 的化合物可用于制备新的磺胺嘧啶相关的式抗生素化合物
这种新抗生素的活性与抗生素氨曲南相似,可用于治疗由革兰阴性微生物,特别是绿脓杆菌引起的感染性疾病。
US4502994A
申请人:——
公开号:US4502994A
公开(公告)日:1985-03-05
US4663469A
申请人:——
公开号:US4663469A
公开(公告)日:1987-05-05
Synthesis of chiral .beta.-lactams using L-ascorbic acid
作者:Chung Chen Wei、Silvano De Bernardo、John P. Tengi、Jack Borgese、Manfred Weigele