Depigmenting Activity and Low Cytotoxicity of Alkoxy Benzoates or Alkoxy Cinnamte in Cultured Melanocytes
作者:Hak Hee Kang、Ho Sik Rho、Jae Sung Hwang、Seong-Geon Oh
DOI:10.1248/cpb.51.1085
日期:——
To obtain effective and safe topical depigmenting agents, we synthesized hydroxybenzoates, alkoxybenzoates, and 3,4,5-trimethoxycinnamate containing a thymol moiety and screened then for high-level inhibitory activity against melanin synthesis in cultured melanocytes. Eight compounds were tested for their depigmenting effect and cytotoxicity using a murine melanocyte cell line. We found that 3,4,5-trialkoxybenzoates and 3,4,5-trimethoxycinnamate, synthesized by conjugating 3,4,5-trialkoxybenzoic acids and 3,4,5-trimethoxycinnmic acid with thymol, showed a potent depigmenting effect and low cytotoxicity. Compound 4h, 5-methyl-2-(methylethyl)phenyl (2E)-3-(3,4,5-trimethoxyphenyl)prop-2-enoate, showed the most potent depigmenting effect (IC50=10 μM) with low cytotoxicity (IC50=200 μM).
为了获得有效且安全的局部脱色剂,我们合成了含百里酚基团的羟基苯甲酸盐、烷氧基苯甲酸盐和3,4,5-三甲氧基肉桂酸盐,并对其在培养的黑素细胞中抑制黑色素合成的高水平活性进行了筛选。我们使用小鼠黑素细胞系测试了八种化合物的脱色效果和细胞毒性。研究发现,通过将3,4,5-三烷氧基苯甲酸和3,4,5-三甲氧基肉桂酸与百里酚结合合成的3,4,5-三烷氧基苯甲酸盐和3,4,5-三甲氧基肉桂酸盐显示出强大的脱色效果和低细胞毒性。化合物4h,5-甲基-2-(甲基乙基)苯基(2E)-3-(3,4,5-三甲氧基苯基)丙-2-烯酸酯,显示出最强的脱色效果(IC50=10 μM)和低细胞毒性(IC50=200 μM)。