Novel Benzo[d]imidazole-2(3H)-thiones as Potent Inhibitors of the .ALPHA.-Melanocyte Stimulating Hormone Induced Melanogenesis in Melanoma B16 Cells
作者:Jee-Hyun Lee、Pillaiyar Thanigaimalai、Ki-Cheul Lee、Seong-Cheol Bang、Min-Seok Kim、Vinay Kumar Sharma、Cheong-Yong Yun、Eunmiri Roh、Youngsoo Kim、Sang-Hun Jung
DOI:10.1248/cpb.58.918
日期:——
In order to determine the optimum size of heterocycle of lead compound 1 (6-methyl-3-phenethyl-3,4-dihydro-1H-quinoline-2-thione; IC50=0.8 μM) for inhibition of melanogenesis, we have synthesized and evaluated some benzimdazole-2(3H)-thiones 5a—e. The preliminary bioassay has shown that the benzimdazole-2(3H)-thione motif of 5 is essential structural unit for their inhibitory activity. Among all thiones 5a—e, the compound 5d strongly inhibited the formation of melanin with IC50 value of 1.3 μM.
为了确定先导化合物1(6-甲基-3-苯乙基-3,4-二氢-1H-喹啉-2-硫酮;IC50=0.8 μM)抑制黑色素生成的最佳杂环大小,我们合成并评估了一些苯基咪唑-2(3H)-硫酮5a—e。初步生物检测结果表明,化合物5的苯基咪唑-2(3H)-硫酮构型是其抑制活性的必要结构单元。在所有硫酮5a—e中,化合物5d对黑色素的生成具有强烈抑制作用,其IC50值为1.3 μM。