The first example of aza-Nenitzescu reaction. A new approach to the heterocyclic quinones synthesis
作者:Valeriya M. Lyubchanskaya、Lyudmila M. Alekseeva、Vladimir G. Granik
DOI:10.1016/s0040-4020(97)01052-1
日期:1997.11
The first example of aza-Nenitzescu reaction is described. The interaction of azaenamine-benzaldehyde phenylhydrazone with p-benzoquinone and chlorobenzoquinone leads to a new synthesis of 5-hydroxyindazoles and indazole quinones.
Influenza infections are often exacerbated by secondary bacterial infections, primarily caused by Streptococcus pneumoniae. Both respiratory pathogens have neuraminidases that support infection. Therefore, we hypothesized that dual inhibitors of viral and bacterial neuraminidases might be an advantageous strategy for treating seasonal and pandemic influenza pneumonia complicated by bacterial infections
流感感染常常因继发细菌感染而加剧,继发细菌感染主要由肺炎链球菌引起。两种呼吸道病原体都具有支持感染的神经氨酸酶。因此,我们假设病毒和细菌神经氨酸酶的双重抑制剂可能是治疗细菌感染并发的季节性和大流行性流感肺炎的有利策略。通过筛选我们的内部化学库,我们发现了一种新的化学型,可能对进一步寻找抗流感小分子的活动感兴趣。我们对吡咯并[2,3- e ]吲唑空间的探索导致鉴定出两种命中化合物:6h和12。这些分子对 MDCK 细胞具有良好的耐受性,并抑制 H3N2 和 H1N1 甲型流感病毒株的复制。此外,这两种化合物都能抑制病毒和肺炎球菌神经氨酸酶,表明它们具有双重活性。鉴于其抗病毒活性,吡咯并[2,3- e ]吲唑已被确定为开发新型神经氨酸酶抑制剂的有前途的支架,该抑制剂对甲型流感病毒和肺炎链球菌具有活性。