1
|
Wang J, Lu H, He Y, Jing C, Wei H. Cobalt-Catalyzed Nitrogen Atom Insertion in Arylcycloalkenes. J Am Chem Soc 2022; 144:22433-22439. [PMID: 36449714 DOI: 10.1021/jacs.2c10570] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Developing strategies enabling the modification of underlying molecular frameworks facilitates access to underexplored chemical spaces. Skeletal editing is an emerging technology for late-stage diversification of bioactive molecules. However, the current state of this knowledge remains undeveloped. This work describes a simple protocol that "inserts" a nitrogen atom into arylcycloalkenes to form the corresponding N-heterocycles. The use of an inexpensive cobalt catalyst under aqueous and open-air conditions makes this protocol very practical. Examples of late-stage modification of compounds of pharmaceutical interest and complex fused ring compounds further demonstrated the potentially broad applicability of this methodology.
Collapse
Affiliation(s)
- Juanjuan Wang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, China
| | - Hong Lu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, China
| | - Yi He
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, China
| | - Chunxiu Jing
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, China
| | - Hao Wei
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, China
| |
Collapse
|
2
|
Design, synthesis and biological evaluation of 2,4-disubstituted oxazole derivatives as potential PDE4 inhibitors. Bioorg Med Chem 2017; 25:1852-1859. [PMID: 28196708 DOI: 10.1016/j.bmc.2017.01.047] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2016] [Accepted: 01/31/2017] [Indexed: 12/17/2022]
Abstract
In this study, a series of pyrazole derivatives containing 4-phenyl-2-oxazole moiety were designed and synthesized in a concise way, some of which exhibited considerable inhibitory activity against PDE4B and blockade of LPS-induced TNF-α release. Compound 4c displayed the strongest inhibition activity (IC50=1.6±0.4μM) and good selectivity against PDE4B. Meanwhile, compound 4c showed good in vivo activity in animal models of asthma/COPD and sepsis induced by LPS. The primary structure-activity relationship study showed the 3,5-dimethylpyrazole residue was essential for the bioactivity, and the substituted group R1 at the benzene ring also affected the activity. Docking results showed that compound 4c played a key role to form integral hydrogen bonds and a π-π stacking interaction, using hydrazide scaffold (CONN) and pyrazole ring respectively, with PDE4B protein. While the rest part of the molecule extended into the catalytic domain to block the access of cAMP and formed the foundation for inhibition of PDE4B. Compound 4c would be great promise as a lead compound for further study based on the preliminary structure-activity relationship and molecular modeling studies.
Collapse
|
3
|
Serya RAT, Abbas AH, Ismail NSM, Esmat A, Abou El Ella DA. Design, Synthesis and Biological Evaluation of Novel Quinazoline-Based Anti-inflammatory Agents Acting as PDE4B Inhibitors. Chem Pharm Bull (Tokyo) 2015; 63:102-16. [DOI: 10.1248/cpb.c14-00737] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | - Abeer Hussin Abbas
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Ain Shams University
| | | | - Ahmed Esmat
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Ain Shams University
| | | |
Collapse
|
4
|
Niu M, Dong F, Tang S, Fida G, Qin J, Qiu J, Liu K, Gao W, Gu Y. Pharmacophore modeling and virtual screening for the discovery of new type 4 cAMP phosphodiesterase (PDE4) inhibitors. PLoS One 2013; 8:e82360. [PMID: 24340020 PMCID: PMC3858292 DOI: 10.1371/journal.pone.0082360] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2013] [Accepted: 10/23/2013] [Indexed: 11/19/2022] Open
Abstract
Type 4 cAMP phosphodiesterase (PDE4) inhibitors show a broad spectrum of anti-inflammatory effects in almost all kinds of inflamed cells, by an increase in cAMP levels which is a pivotal second messenger responsible for various biological processes. These inhibitors are now considered as the potential drugs for treatment of chronic inflammatory diseases. However, some recently marketed inhibitors e.g., roflumilast, have shown adverse effects such as nausea and emesis, thus restricting its use. In order to identify novel PDE4 inhibitors with improved therapeutic indexes, a highly correlating (r = 0.963930) pharmacophore model (Hypo1) was established on the basis of known PDE4 inhibitors. Validated Hypo1 was used in database screening to identify chemical with required pharmacophoric features. These compounds are further screened by using the rule of five, ADMET and molecular docking. Finally, twelve hits which showed good results with respect to following properties such as estimated activity, calculated drug-like properties and scores were proposed as potential leads to inhibit the PDE4 activity. Therefore, this study will not only assist in the development of new potent hits for PDE4 inhibitors, but also give a better understanding of their interaction with PDE4. On a wider scope, this will be helpful for the rational design of novel potent enzyme inhibitors.
Collapse
Affiliation(s)
- Miaomiao Niu
- Department of Biomedical Engineering, School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Fenggong Dong
- Department of Biomedical Engineering, School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Shi Tang
- Department of Biomedical Engineering, School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Guissi Fida
- Department of Biomedical Engineering, School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Jingyi Qin
- Department of Biomedical Engineering, School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Jiadan Qiu
- Department of Biomedical Engineering, School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Kangbo Liu
- Department of Biomedical Engineering, School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Weidong Gao
- Department of Biomedical Engineering, School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Yueqing Gu
- Department of Biomedical Engineering, School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
- * E-mail:
| |
Collapse
|
5
|
Vitnik VD, Ivanović MD, Vitnik ŽJ, Đorđević JB, Žižak ŽS, Juranić ZD, Juranić IO. One-Step Conversion of Ketones to Conjugated Acids Using Bromoform. SYNTHETIC COMMUN 2009. [DOI: 10.1080/00397910802531955] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
| | - M. D. Ivanović
- b Faculty of Chemistry , University of Belgrade , Belgrade, Serbia
| | - Ž. J. Vitnik
- b Faculty of Chemistry , University of Belgrade , Belgrade, Serbia
| | - J. B. Đorđević
- c Faculty of Agriculture , University of Belgrade , Zemun, Serbia
| | - Ž. S. Žižak
- d Institute for Oncology and Radiology of Serbia , Belgrade, Serbia
| | - Z. D. Juranić
- d Institute for Oncology and Radiology of Serbia , Belgrade, Serbia
| | - I. O. Juranić
- b Faculty of Chemistry , University of Belgrade , Belgrade, Serbia
| |
Collapse
|