N-Long-chain Monoacylated Derivatives of 2,6-Diaminopyridine with Antiviral Activity
作者:Nobuko Mibu、Kazumi Yokomizo、Nobuhiro Kashige、Fumio Miake、Takeshi Miyata、Masaru Uyeda、Kunihiro Sumoto
DOI:10.1248/cpb.55.111
日期:——
N-Monoacyl-2,6-diaminopyridines (2a—c) and N,N′-diacyl-2,6-diaminopyridines (3a—c) were synthesized from 2,6-diaminopyridine by acylation with the corresponding acyl halide or by dehydration with the corresponding carboxylic acid using 1,3-dicyclohexylcarbodiimide (DCC). The antiviral activities of N-monoacyl- and N,N′-diacyl-2,6-diaminopyridines (2a—c and 3a—c) were estimated using plaque reduction assay with HSV-1. All N-monoacyl derivatives (2a—c) showed significant anti-herpes simplex virus (HSV)-1 activity (EC50=15.3—18.5 μg/ml). The CC50 values of 2a—c measured using Vero cells ranged at 37.5—50.0 μg/ml. These compounds showed no significant antibacterial activities with Escherichia coli or Staphylococcus aureus even at a concentration of 1 mg/ml. The N,N′-diacyl derivatives (3a—c) showed no significant anti-HSV-1 activity.
N-monoacyl- 2,6-二氨基吡啶(2a-c)和 N,N′-diacyl-2,6-二氨基吡啶(3a-c)是以 2,6-二氨基吡啶为原料,通过与相应的酰基卤进行酰化或使用 1,3-二环己基碳二亚胺(DCC)与相应的羧酸进行脱水而合成的。通过用 HSV-1 进行斑块还原试验,估算了 N-单酰基和 N,N′-二酰基-2,6-二氨基吡啶(2a-c 和 3a-c)的抗病毒活性。所有 N-单酰基衍生物(2a-c)都显示出显著的抗单纯疱疹病毒(HSV)-1 活性(EC50=15.3-18.5 μg/ml)。使用 Vero 细胞测定的 2a-c 的 CC50 值为 37.5-50.0 μg/ml。即使浓度为 1 mg/ml,这些化合物对大肠杆菌或金黄色葡萄球菌也没有明显的抗菌活性。N,N′-二乙酰基衍生物(3a-c)没有显示出明显的抗 HSV-1 活性。