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Elkamhawy A, Oh NK, Gouda NA, Abdellattif MH, Alshammari SO, Abourehab MAS, Alshammari QA, Belal A, Kim M, Al-Karmalawy AA, Lee K. Novel Hybrid Indole-Based Caffeic Acid Amide Derivatives as Potent Free Radical Scavenging Agents: Rational Design, Synthesis, Spectroscopic Characterization, In Silico and In Vitro Investigations. Metabolites 2023; 13:metabo13020141. [PMID: 36837759 PMCID: PMC9966950 DOI: 10.3390/metabo13020141] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 01/05/2023] [Accepted: 01/11/2023] [Indexed: 01/18/2023] Open
Abstract
Antioxidant small molecules can prevent or delay the oxidative damage caused by free radicals. Herein, a structure-based hybridization of two natural antioxidants (caffeic acid and melatonin) afforded a novel hybrid series of indole-based amide analogues which was synthesized with potential antioxidant properties. A multiple-step scheme of in vitro radical scavenging assays was carried out to evaluate the antioxidant activity of the synthesized compounds. The results of the DPPH assay demonstrated that the indole-based caffeic acid amides are more active free radical scavenging agents than their benzamide analogues. Compared to Trolox, a water-soluble analogue of vitamin E, compounds 3a, 3f, 3h, 3j, and 3m were found to have excellent DPPH radical scavenging activities with IC50 values of 95.81 ± 1.01, 136.8 ± 1.04, 86.77 ± 1.03, 50.98 ± 1.05, and 67.64 ± 1.02 µM. Three compounds out of five (3f, 3j, and 3m) showed a higher capacity to neutralize the radical cation ABTS•+ more than Trolox with IC50 values of 14.48 ± 0.68, 19.49 ± 0.54, and 14.92 ± 0.30 µM, respectively. Compound 3j presented the highest antioxidant activity with a FRAP value of 4774.37 ± 137.20 μM Trolox eq/mM sample. In a similar way to the FRAP assay, the best antioxidant activity against the peroxyl radicals was demonstrated by compound 3j (10,714.21 ± 817.76 μM Trolox eq/mM sample). Taken together, compound 3j was validated as a lead hybrid molecule that could be optimized to maximize its antioxidant potency for the treatment of oxidative stress-related diseases.
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Affiliation(s)
- Ahmed Elkamhawy
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University—Seoul, Goyang 10326, Republic of Korea
- College of Pharmacy, Dongguk University—Seoul, Goyang 10326, Republic of Korea
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Na Kyoung Oh
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University—Seoul, Goyang 10326, Republic of Korea
| | - Noha A. Gouda
- College of Pharmacy, Dongguk University—Seoul, Goyang 10326, Republic of Korea
| | - Magda H. Abdellattif
- Department of Chemistry, College of Science, Taif University, Turaba Branch P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Saud O. Alshammari
- Department of Plant Chemistry and Natural Products, Faculty of Pharmacy, Northern Border University, Arar 91431, Saudi Arabia
| | - Mohammed A. S. Abourehab
- Department of Pharmaceutics, College of Pharmacy, Umm Al-Qura University, Makkah 21955, Saudi Arabia
| | - Qamar A. Alshammari
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Northern Border University, Arar 91431, Saudi Arabia
| | - Amany Belal
- Department of Pharmaceutical Chemistry, College of Pharmacy, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
- Medicinal Chemistry Department, Faculty of Pharmacy, Beni-Suef University, Beni-Suef 62514, Egypt
| | - Minkyoung Kim
- College of Pharmacy, Dongguk University—Seoul, Goyang 10326, Republic of Korea
| | - Ahmed A. Al-Karmalawy
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Ahram Canadian University, 6th of October City, Giza 12566, Egypt
- Correspondence: (A.A.A.-K.); (K.L.)
| | - Kyeong Lee
- BK21 FOUR Team and Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University—Seoul, Goyang 10326, Republic of Korea
- Correspondence: (A.A.A.-K.); (K.L.)
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Lee M, Cho BK, Ihn KJ, Lee WK, Oh NK, Zin WC. Supramolecular honeycomb by self-assembly of molecular rods in rod-coil molecule. J Am Chem Soc 2001; 123:4647-8. [PMID: 11457270 DOI: 10.1021/ja004071+] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- M Lee
- Department of Chemistry, Yonsei University, Shinchon 134, Seoul 120-749, Korea.
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