期刊
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
卷 22, 期 12, 页码 -出版社
MDPI
DOI: 10.3390/ijms22126301
关键词
solid-phase synthesis; caffeic acid; caffeoyl peptide derivatives; antioxidant; stability
资金
- Industrial Strategic Technology Development Program of the Ministry of Trade, Industry, and Energy (MOTIE) [10077652]
- Korean Evaluation Institute of Industrial Technology (KEIT)
- Basic Science Research Program through the National Research Foundation of Korea [NRF-2019R1F1A1062208]
Antioxidants, such as caffeic acid and its derivatives, play a crucial role in combating degenerative diseases and skin aging. The synthesized caffeoyl-prolyl-histidyl-Asn-NH2 derivative showed enhanced antioxidant activity and stability, making it a promising candidate for dermal therapeutic agents and cosmetic ingredients. Optimization of the solid-phase synthetic strategy allowed for large-scale production of these potentially beneficial compounds.
Antioxidants play a critical role in the treatment of degenerative diseases and delaying the aging of dermal tissue. Caffeic acid (CA) is a representative example of the antioxidants found in plants. However, CA is unsuitable for long-term storage because of its poor stability under ambient conditions. Caffeoyl-Pro-His-NH2 (CA-Pro-His-NH2, CA-PH) exhibits the highest antioxidant activity, free radical scavenging and lipid peroxidation inhibition activity among the histidine-containing CA-conjugated dipeptides reported to date. The addition of short peptides to CA, such as Pro-His, is assumed to synergistically enhance its antioxidative activity. In this study, several caffeoyl-prolyl-histidyl-Xaa-NH2 derivatives were synthesized and their antioxidative activities evaluated. CA-Pro-His-Asn-NH2 showed enhanced antioxidative activity and higher structural stability than CA-PH, even after long-term storage. CA-Pro-His-Asn-NH2 was stable for 3 months, its stability being evaluated by observing the changes in its NMR spectra. Moreover, the solid-phase synthetic strategy used to prepare these CA-Pro-His-Xaa-NH2 derivatives was optimized for large-scale production. We envision that CA-Pro-His-Xaa-NH2 derivatives can be used as potent dermal therapeutic agents and useful cosmetic ingredients.
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