New Pyrazine Conjugates: Synthesis, Computational Studies, and Antiviral Properties against SARS‐CoV‐2
作者:Israa A. Seliem、Adel S. Girgis、Yassmin Moatasim、Ahmed Kandeil、Ahmed Mostafa、Mohamed A. Ali、Mohamed S. Bekheit、Siva S. Panda
DOI:10.1002/cmdc.202100476
日期:2021.11.19
Antiviral drug development for SARS-CoV-2: The design and microwave-assisted synthesis of pyrazine conjugates are reported. Some of the newly synthesized conjugates show better antiviral activity and selectivity indexes than those of the reference drug. All the lead compounds exhibited low cytotoxicity. Thus, these conjugates could lead to the development of potential drug candidates for SARS-CoV-2.
Total synthesis of cyclic heptapeptide Rolloamide B
作者:Mirna El Khatib、Mohamed Elagawany、Eray Çalışkan、Emily Faith Davis、Hassan M. Faidallah、Said A. El-feky、Alan R. Katritzky
DOI:10.1039/c3cc39291k
日期:——
The first total synthesis of Rolloamide B, a cyclic proline-enriched heptapeptide, is reported. This work features solution phase benzotriazole-mediated peptide synthesis ligating native amino acids.
Synthesis and Antimalarial Bioassay of Quinine - Peptide Conjugates
作者:Siva S. Panda、Mohamed A. Ibrahim、Hasan Küçükbay、Marvin J. Meyers、Francis M. Sverdrup、Said A. El-Feky、Alan R. Katritzky
DOI:10.1111/cbdd.12134
日期:2013.10
Amino acid and peptide conjugates of quinine were synthesized using microwave irradiation in 52–95% yields using benzotriazole methodology. The majority of these conjugates retain in vitro antimalarial activity with IC50 values below 100 nm, similar to quinine.
使用苯并三唑方法,使用微波辐射以52–95%的产率合成奎宁的氨基酸和肽共轭物。这些结合物中的大多数保留体外抗疟活性,IC 50值低于100 n m,类似于奎宁。
Synthesis, Antibacterial Evaluation, and Computational Studies of a Diverse Set of Linezolid Conjugates
作者:Riham M. Bokhtia、Adel S. Girgis、Tarek S. Ibrahim、Fatma Rasslan、Eman S. Nossier、Reham F. Barghash、Rajeev Sakhuja、Eatedal H. Abdel-Aal、Siva S. Panda、Amany M. M. Al-Mahmoudy
DOI:10.3390/ph15020191
日期:——
The development of newantibiotics to treat multidrug-resistant (MDR) bacteria or possess broad-spectrum activity is one of the challenging tasks. Unfortunately, there are not many newantibiotics in clinical trials. So, the molecular hybridization approach could be an effective strategy to develop potential drug candidates using the known scaffolds. We synthesized a total of 31 diverse linezolid conjugates
开发新的抗生素来治疗多重耐药(MDR)细菌或具有广谱活性是具有挑战性的任务之一。不幸的是,临床试验中的新抗生素并不多。因此,分子杂交方法可能是使用已知支架开发潜在候选药物的有效策略。我们使用我们已建立的苯并三唑化学方法合成了总共 31 种不同的利奈唑胺缀合物 3、5、7、9、11、13 和 15,具有良好的产率和纯度。一些合成的缀合物对不同的细菌菌株表现出有希望的抗菌特性。在所有合成的化合物中,5d 是最有前途的抗菌剂,对金黄色葡萄球菌的 MIC 为 4.5 µM,对枯草芽孢杆菌的 MIC 为 2.25 µM。利用我们的实验数据池,我们开发了一个强大的 QSAR(对于金黄色葡萄球菌和枯草芽孢杆菌模型,分别为 R2 = 0.926、0.935;R2cvOO = 0.898、0.915;R2cvMO = 0.903、0.916)和 3D 药效团模型。我们还使用计算工具确定了合成的缀合物的药物样
Catalyst-free facile synthesis of 2-substituted benzothiazoles
作者:Siva S. Panda、Mohamed A. Ibrahim、Alexander A. Oliferenko、Abdullah M. Asiri、Alan R. Katritzky
DOI:10.1039/c3gc41255e
日期:——
2-Substituted benzothiazoles were synthesized in excellent yields by a benzotriazole methodology, with the conditions being efficient, green, economical, and suitable for broad applications in medicinal chemistry and the synthesis of specialty chemicals.