Catalyst‐free facile and efficient one‐pot synthesis of densely functionalized pyrroles and α‐amino ketones
作者:Sivarama Krishna Reddy Vanga、Hari Babu Bollikolla、V. V. Satyanarayana Peruri
DOI:10.1002/jhet.4227
日期:2021.3
An efficient catalyst‐free one‐pot three‐component synthesis of penta‐substituted pyrroles has been successfully developed. A variety of penta‐substituted pyrroles were straightforwardly synthesized from good to excellent yields (78%–93%) by using easily accessible starting materials under mild conditions. This protocol also provided α‐amino ketones in good yields (87%–98%) without column chromatography
SnCl2·2H2O-Catalyzed Solvent-Free Synthesis of α-Amino Ketones and Tetrasubstituted Pyrazines
作者:Fatemeh Tamaddon、Arefeh Dehghani Tafti
DOI:10.1055/s-0035-1561663
日期:——
α-amino ketones in excellent yields. While a similar reaction with aliphatic amines is applicable for the synthesis of substituted pyrazines, SnCl 2 ·2H 2 O permits versatility in the solvent-free reaction of α-hydroxy ketones with ammonium acetate to give the corresponding substituted pyrazines in good to excellent yields.
各种苯胺与α-羟基酮在SnCl 2 ·2H 2 O 催化下的无溶剂反应以优异的产率提供了α-氨基酮。虽然与脂肪胺的类似反应适用于合成取代的吡嗪,但 SnCl 2 ·2H 2 O 在 α-羟基酮与乙酸铵的无溶剂反应中具有多功能性,以良好到极好的产率得到相应的取代吡嗪。
Novel Antiviral Compounds against Gastroenteric Viral Infections
作者:Mosaad S. Mohamed、Rania H. Abd El-Hameed、Amira I. Sayed、Sameh H. Soror
DOI:10.1002/ardp.201400387
日期:2015.3
antiviral agent against gastroenteritis viralinfection will be a breakthrough in healthcare. Pyrrole and pyrrolopyrimidine derivatives are well known for their biological activity as antibacterial, antifungal, and anticancer agents. These compounds also proved to possess antiviral activity. Here, we synthesized novel pyrrole and pyrrolopyrimidine compounds and examined their antiviral activity. We synthesized
病毒性胃肠炎是一种严重的病毒感染,它影响世界各地的许多人,其中大多数是儿童。感染可能由不同的病毒引起,例如柯萨奇病毒、腺病毒和轮状病毒。此类感染尚无有效治愈方法,治疗主要依靠住院和给予营养支持。一种针对胃肠炎病毒感染的新型抗病毒药物将成为医疗保健领域的一项突破。吡咯和吡咯并嘧啶衍生物因其作为抗菌剂、抗真菌剂和抗癌剂的生物活性而众所周知。这些化合物也被证明具有抗病毒活性。在这里,我们合成了新的吡咯和吡咯并嘧啶化合物并检查了它们的抗病毒活性。我们合成了几种新的吡咯,吡咯并[2,3-d]嘧啶,和吡咯并[3,2-e][1,2,4]三唑并[1,5-c]嘧啶衍生物。所有合成化合物的表征均基于微量分析和光谱数据。此外,我们确定了这些化合物对 BGM、Hep-2 和 MA-104 细胞的无毒剂量。我们测试了所有合成化合物对柯萨奇病毒 B4、7 型腺病毒和轮状病毒 Wa 株的抗病毒活性。几种化合物作为抗病毒
Pyrrolopyrazoles: Synthesis, Evaluation and Pharmacological Screening as Antidepressant Agents
作者:Samar S. Fatahala、Shahira Nofal、Eman Mahmoud、Rania H. Abd El-hameed
DOI:10.2174/1573406414666181108090321
日期:2019.11.18
fused pyrroles are of great interest as biologically active compounds, among these activities; antidepressant activity is of special concern. OBJECTIVE Synthesis of a series of pyrrolopyrazoles and their pyrimidine derivatives and their characterization using spectral data to be monitored for antidepressant activity using behavioral techniques. METHODS A control group was administered the vehicle i.p