Abstract

benzoylisothiocyanate 와 아스파르트산 [BATA] (1), 글루탐산 [BATG] (2), 메티오닌 [BATM] (3), 루신 [BATL] (4), 및 트립토판 [BATT] (5) 등의 다양한 아미노산을 반응시켜 일련의 새로운 리간드인 N-[(benzoylamino)-thioxomethyl]-amino acid (HL)를 합성하였다. 이들 리간드의 특성을 원소분석, IR 및 NMR로 규명하였다. 이러한 리간드 (6-8)의 몇가지 전이금속 착물을 제조하여[M = Cu(II), Co(II), 또는 Ni(II)] 원소분석, IR 및 <TEX>$^1H$</TEX> NMR을 통하여 특성을 규명하였다. 항균성에 대한 연구 결과 모든 리간드가 항균 활성을 보이지 않는 반면, (<TEX>$ML_2$</TEX>) 착물; [M=Cu(II),Co(II), 또는 Ni(II)]은 (Gram -ive) Escherichia (NCTC5933) 및 (Gram +ive) Staphylococcus (NCTC6571)에 대해 항균 활성을 보였으며 또한 (BALB/C) 알비노 쥐에 대해 독성을 보이지 않았다. A new series of ligands N-[(benzoylamino)-thioxomethyl]-amino acid (HL) were synthesized by reaction of benzoylisothiocyanate with various amino acids namely aspartic acid [BATA] (1), glutamic acid [BATG] (2), methionine [BATM] (3), leucine [BATL] (4), and tryptophan [BATT] (5). The ligands were characterized by elemental analysis, IR and NMR spectra. Some transition metal complexes (<TEX>$ML_2$</TEX>) for these ligands (6-8) were prepared; [M=Cu(II), Co(II), or Ni(II)], and characterized by elemental analysis, IR and <TEX>$^1H$</TEX> NMR spectra. Antibacterial study showed that all the ligands have no antibacterial activity, whereas (<TEX>$ML_2$</TEX>) complexes; [M = Cu(II), Co(II), or Ni(II)] have antibacterial activity towards (Gram -ive) Escherichia (NCTC5933) and (Gram +ive) Staphylococcus (NCTC6571) and have no toxicity on (BALB/C) Albino mice.

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