Studies related to penicillins. Part I. 6-α-Chloropenicillanic acid and its reaction with nucleophiles
作者:I. McMillan、R. J. Stoodley
DOI:10.1039/j39680002533
日期:——
The preparation of 6-α-chloropenicillanic acid from the deamination of 6-β-aminopenicillanic acid has been improved, and the reaction is shown to proceed by way of 6-azopenicillanic acid. Benzyl 6-azopenicillanate has been isolated from the reaction of benzyl 6-β-aminopenicillanate with nitrous acid. Methyl 6-α-chloropenicillanate is rearranged to 6-azidocarbonyl-2,3-dihydro-3S-methoxycarbonyl-2,2-dimethyl-1
由6-β-氨基青霉酸的脱氨基反应制备6-α-氯青霉酸的方法已得到改进,并且表明反应是通过6-氮杂青霉酸来进行的。从6-β-氨基青霉苄酯与亚硝酸的反应中已分离出6-氮杂青杨酸苄酯。甲基6-α-chloropenicillanate重排为6-叠氮羰基-2,3-二氢-3-小号甲氧基羰基-2,2-二甲基-1,4-噻嗪与叠氮化钠NN二甲基甲酰胺和2,3-二氢3 S,6-二甲氧基羰基-2,2-二甲基-1,4-噻嗪与甲醇钠的甲醇溶液。6-α-氯Openicillanic酸经历类似的重排。