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Effect of p-aminophenols on tyrosinase activity
Yu Komori1, Masahiko Imai1, Takayasu Yamauchi2
1Laboratory of Physiological Chemistry, Institute of Medicinal Chemistry, Hoshi University, 2-4-41 Ebara, Shinagawa, Tokyo 142-8501, Japan.
Bioorganic & Medicinal Chemistry
|June 29, 2014
Summary
A novel p-aminophenol derivative, compound 3, effectively inhibits tyrosinase, the enzyme crucial for melanin production. This compound shows promise as a safer alternative to existing tyrosinase inhibitors like kojic acid.
Area of Science:
- Biochemistry
- Dermatology
- Neuroscience
Background:
- Tyrosinase is a key enzyme in melanogenesis, catalyzing melanin synthesis in skin, hair, and brain neuromelanin.
- Existing tyrosinase inhibitors, such as kojic acid, can cause adverse effects like rash and dermatitis.
Purpose of the Study:
- To synthesize and evaluate novel aminophenol derivatives as potential tyrosinase inhibitors.
- To identify potent and safe alternatives to current tyrosinase inhibitors.
Main Methods:
- Synthesis of aminophenol derivatives based on N-(4-hydroxyphenyl)retinamide structure-activity relationships.
- In vitro assessment of inhibitory activity against mushroom tyrosinase.
- Kinetic analysis (Lineweaver-Burk) to determine the mode of inhibition.
Main Results:
- p-decylaminophenol (compound 3) demonstrated significant tyrosinase inhibition.
- Compound 3 exhibited greater inhibitory potency than kojic acid.
- Kinetic analysis revealed non-competitive inhibition of tyrosinase by compound 3 for both tyrosine and DOPA.
Conclusions:
- Compound 3 is a potent tyrosinase inhibitor.
- p-decylaminophenol may serve as a safer and effective alternative to kojic acid for managing conditions related to tyrosinase activity.
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