Synthesis and microbiological activities of some monohalogenated analogs of tyrosine
作者:Tommy J. McCord、David R. Smith、Douglas W. Winters、John F. Grimes、Karen L. Hulme、Lawrence Q. Robinson、Larry D. Gage、Alvie L. Davis
DOI:10.1021/jm00235a006
日期:1975.1
2-Chlorotyrosine and 2-bromotyrosine, as well as the previously reported 2-fluorotyrosine, were synthesized by hydrolysis of the condensation products from the appropriate benzyl bromide and ethyl acetamidomalonate and were compared with the corresponding 3-halotyrosines as growth inhibitors of Escherichia coli 9723, Streptococcus faecalis 8043 and Lactobacillus plantarum 8014. In contrast to the 2- and 3-fluorotyrosines which were equally effective as growth inhibitors, the 2-chloro- and 2-bromotyrosines were much more effective than the 3-chloro- and 3-bromotyrosines in inhibiting the growth of the three microorganisms. For each of the assay organisms, the growth inhibitions of all three 2-halotyrosines were reversed competitively in varying degrees by tyrosine.