作者:Luo, Mingyu、Shen, Qiushi、Su, Heyi、Li, Jian Mei、Chan, Chun-Ming、Yu, Wing-Yiu
DOI:10.1021/acs.orglett.4c01852
日期:——
coupling of α-diazoacetates with amino acid-derived alkyl N-hydroxy phthalimide esters, under metal-free conditions involving 1,8-diazabicyclo(5.4.0)undec-7-ene as the base, with which highly functionalized 1,2,4-triazoles can be obtained in excellent yields with remarkable functional group tolerance. Preliminary studies revealed that 1,2,4-triazole 3a exhibits potent inhibition of tyrosinase activities
1,2,4-三唑是许多药物的特殊支架,结构多样化的化合物库的方法目前引起人们的兴趣。在这里,我们报道了在无金属条件下,以 1,8-二氮杂双环(5.4.0)十一碳-7-烯为碱,α-重氮乙酸酯与氨基酸衍生的烷基N-羟基邻苯二甲酰亚胺酯的有效偶联,其高度可以以优异的产率获得具有显着官能团耐受性的官能化 1,2,4-三唑。初步研究表明,1,2,4-三唑3a可有效抑制黑色素瘤 B16F10 细胞系中的酪氨酸酶活性,展现出良好的皮肤美白特性。