Tyrosinase ubiquitously existing from microorganisms to animals and plants is known to be the most critical and rate limiting enzyme during melanin biosynthesis. In order to develop new tyrosinase inhibitor we have synthesized 14 diphenyl ether compounds possessing hydroxyl, bromo, and nitro groups in the structure. Among the compounds prepared, 18 and 19 have shown much stronger inhibition of tyrosinase monophenolase function than arbutin used as a positive control. Both compounds 18 and 19 possess para-hydroxyphenyl moiety in their structure, which might reinforce the importance of p-hydroxyphenyl group in the tyrosinase inhibitory process. In the DPPH radical scavenging activity test, none of the compounds even 18 and 19 showed significant antioxidant activity. The results suggest that elaborate adjustment of diphenyl ether analogues with proper substituents have potential to be developed as new skin whitening agents working on the tyrosinase function.
从微
生物到动植物中普遍存在的
酪氨酸酶,在
黑色素生物合成过程中被认为是最关键和限速的酶。为了开发新的
酪氨酸酶抑制剂,我们合成了14种具有羟基、
溴和硝基结构的双苯醚化合物。在制备的化合物中,18和19对
酪氨酸酶单
酚酶功能的抑制作用远强于作为阳性对照的
熊果苷。化合物18和19在其结构中均具有对羟基苯基部分,这可能强化了对羟基苯基团在
酪氨酸酶抑制过程中的重要性。在
DPPH自由基清除活性测试中,所有化合物包括18和19均未显示出显著的抗氧化活性。这些结果表明,通过精心调整带有适当取代基的双苯
醚类似物,有望开发成为针对
酪氨酸酶功能的新型皮肤美白剂。