作者:Jan Ritschel、Florenz Sasse、Martin E. Maier
DOI:10.1002/ejoc.200600681
日期:2007.1
A collection of benzotriazoles consisting of seven compounds was prepared from the propynyl-substituted benzolactone 1 and various azides using click chemistry. The lactone 1 was obtained through a short route by direct esterification of the allylbenzoic acid 9 with the alkynol 7 giving the benzoate 2. The homopropargyl alcohol 7 in turn was obtained by opening the epoxide 6 with triisopropylsilyl
使用点击化学从丙炔基取代的苯内酯 1 和各种叠氮化物制备了一组由七种化合物组成的苯并三唑。内酯1是通过烯丙基苯甲酸9与炔醇7的直接酯化得到苯甲酸酯2的短路线获得的。高炔丙醇7又通过用三异丙基甲硅烷基乙炔开环环氧化物6获得。使用格鲁布斯催化剂 II 对酯 2 进行闭环复分解,然后去除硅保护基团,得到内酯 1。 苯并三唑中的两个,17a 和 17b,也被转化为相应的酚,以探测酚 OH 在生物活性。在 L929 小鼠成纤维细胞试验中,所有九种苯并三唑均显示出细胞毒活性,IC 50 值在低微摩尔范围内。