|
1
|
Abstract
Pyrazolo-oxazine fused systems are interesting classes of heterocyclic compounds
exhibiting pronounced biological applications such as anticancer, antitubercular,
anti-inflammatory, antibacterial and antifungal activities as well as inhibiting COX-1 and
COX-2 enzymes. Depending on the distribution position of the heteroatoms (N and O), there
are fourteen different systems of pyrazolo-oxazine. Nine of them were biologically abundant
in literature, for example, pyrazolo[3,4-e][1,3]oxazines are used as analogs of antibiotics
Formycin, Formycin B, Oxoformycin B. This review article summarizes the concerted efforts
expended on most of the synthetic routes to the various types of pyrazolo-oxazines in
the literature until the first quarter of 2020. The reactions of pyrazolo-oxazines with various
reagents are also outlined.
Collapse
Affiliation(s)
- Kamal M. Dawood
- Department of Chemistry, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | - Thoraya A. Farghaly
- Department of Chemistry, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | - Mohamed A. Raslan
- Department of Chemistry, Faculty of Science, Aswan University, 81528 Aswan, Egypt
| |
Collapse
|
|
2
|
Jia H, Yu J, Du X, Cherukupalli S, Zhan P, Liu X. Design, diversity-oriented synthesis and biological evaluation of novel heterocycle derivatives as non-nucleoside HBV capsid protein inhibitors. Eur J Med Chem 2020; 202:112495. [PMID: 32712535 DOI: 10.1016/j.ejmech.2020.112495] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 05/16/2020] [Accepted: 05/18/2020] [Indexed: 12/27/2022]
Abstract
The capsid assembly is a significant phase for the hepatitis B virus (HBV) lifespan and is an essential target for anti-HBV drug discovery and development. Herein, we used scaffold hopping, bioisosterism, and pharmacophore hybrid-based strategies to design and synthesize six series of various heterocycle derivatives (pyrazole, thiazole, pyrazine, pyrimidine, and pyridine) and screened for in vitro anti-HBV non-nucleoside activity. Drug candidate NZ-4 and AT-130 were used as lead compounds. Several compounds exhibited prominent anti-HBV activity compared to lead compound NZ-4 and positive drug Lamivudine, especially compound II-8b, showed the most prominent anti-HBV DNA replication activity (IC50 = 2.2 ± 1.1 μM). Also compounds IV-8e and VII-5b showed the best in vitro anti-HBsAg secretion (IC50 = 3.8 ± 0.7 μM, CC50 > 100 μM) and anti-HBeAg secretion (IC50 = 9.7 ± 2.8 μM, CC50 > 100 μM) respectively. Besides, II-8b can interact HBV capsid protein with good affinity constants (KD = 60.0 μM), which is equivalent to lead compound NZ-4 ((KD = 50.6 μM). The preliminary structure-activity relationships (SARs) of the newly synthesized compounds were summarized, which may help researchers to discover more potent anti-HBV agents.
Collapse
Affiliation(s)
- Haiyong Jia
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, 44 West Culture Road, 250012, Jinan, Shandong, PR China; School of Pharmacy, Weifang Medical University, 261053, Weifang, Shandong, PR China
| | - Ji Yu
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, 44 West Culture Road, 250012, Jinan, Shandong, PR China
| | - Xianhong Du
- School of Pharmacy, Weifang Medical University, 261053, Weifang, Shandong, PR China; Department of Immunology, Key Laboratory for Experimental, Teratology of Ministry of Education, Shandong Provincial Key Laboratory of Infection and Immunology, Shandong University School of Medicine, Jinan, 250012, Shandong Province, China
| | - Srinivasulu Cherukupalli
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, 44 West Culture Road, 250012, Jinan, Shandong, PR China
| | - Peng Zhan
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, 44 West Culture Road, 250012, Jinan, Shandong, PR China.
| | - Xinyong Liu
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, 44 West Culture Road, 250012, Jinan, Shandong, PR China.
| |
Collapse
|
|
3
|
Khutova BM, Klyuchko SV, Gurenko AO, Vasilenko AN, Rusanov EB, Brovarets VS. Reaction of 7-phenyl-7H-pyrazolo-[3,4-d][1,2,3]triazin-4-ol with thionyl chloride. Chem Heterocycl Compd (N Y) 2013. [DOI: 10.1007/s10593-013-1327-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|