Synthesis and Antimicrobial Activity of Oxazolone, Imidazolone and Triazine Derivatives Containing Benzothiophene
作者:Gadada Naganagowda、Patchanita Thamyongkit、Amorn Petsom
DOI:10.5012/jkcs.2011.55.5.794
日期:2011.10.20
3-Chloro-1-benzothiophene-2-carbonylchloride (1) was allowed to react with glycine to give 3-chloro-1-benzothiophen-2-yl-carbonylaminoacetic acid (2). Various aldehydes were treated with compound (2) in acetic anhydride to get 1,3-oxazol-5-ones (3a-d). These oxazolones were treated with aromatic amines or hydrazides to get various imidazol-4-ones (4a-h or 5al) separately. Oxazolones was also treated with aromatic hydrazine, through which expansion of five membered oxazole ring to six member triazine ring occurs to yield 1,2,4-triazin-6-ones (6a-h). The structures of all the synthesized compounds were confirmed by spectral data and were screened for antibacterial and antifungal activities.
让 3-氯-1-苯并噻吩-2-甲酰氯(1)与甘氨酸反应,得到 3-氯-1-苯并噻吩-2-甲酰氨基乙酸(2)。在乙酸酐中用化合物(2)处理各种醛,得到 1,3-恶唑-5-酮(3a-d)。用芳香胺或酰肼处理这些噁唑酮,可分别得到各种咪唑-4-酮(4a-h 或 5al)。噁唑酮还与芳香族肼进行了处理,从而将五元噁唑环扩展为六元三嗪环,得到 1,2,4-三嗪-6-酮(6a-h)。通过光谱数据确认了所有合成化合物的结构,并对其进行了抗菌和抗真菌活性筛选。