Novel 2-(R-phenyl)amino-3-(2-methylpropenyl)-[1,4]-naphthoquinones: synthesis, characterization, electrochemical behavior and antitumor activity
作者:Annelise Casellato、Amanda P. Neves、J. Walkimar de M. Carneiro、Maria D. Vargas、Lorenzo do C. Visentin、Alviclér Magalhães、Celso A. Câmara、Claudia Pessoa、Letícia V. Costa-Lotufo、José D. B. Marinho Filho、Manoel O. de Moraes
DOI:10.1590/s0103-50532010000100024
日期:——
Novel 2-(R-phenyl)amino-3-(2-methyl-propenyl)-[1,4]-naphthoquinones (R = H, 4-OMe, 4-Ferrocenyl, 4-Me, 3-Me, 4-I, 3-I, 4-CN, 3-CN, 4-NO2 and 3-NO2) derived from nor-lapachol [2-hydroxy-3-(2-methylpropenyl)-1,4-naphthoquinone] were obtained in good yields. Their structures were proposed on the basis of a single crystal X-ray diffraction study (R = OMe, 2b), ¹H and 13C NMR studies and calculations using the B3LYP functional and the 6-311+G(2d,p) basis set. The half-wave potentials of the aminonaphthoquinones and ¹H NMR chemical shifts of the 3-propenyl hydrogen in 2a-k show good correlation with the substituent Hammett constants on the phenylamino ring. The antitumor assays showed promising activity for substrate methoxy-nor-lapachol 1 and the 4-ferrocenyl derivative 2c.
从 nor-lapachol [2-羟基-3-(2-甲基丙烯基)-1,4-萘醌] 中获得了新的 2-(R-苯基)氨基-3-(2-甲基丙烯基)-[1,4]-萘醌(R = H、4-OMe、4-二茂铁基、4-Me、3-Me、4-I、3-I、4-CN、3-CN、4-NO2 和 3-NO2),产量良好。根据单晶 X 射线衍射研究(R = OMe,2b)、¹H 和 13C NMR 研究以及使用 B3LYP 函数和 6-311+G(2d,p) 基集进行的计算,提出了它们的结构。氨基萘醌的半波电位和 2a-k 中 3-丙烯基氢的 ¹H NMR 化学位移显示出与苯胺环上取代基 Hammett 常量的良好相关性。抗肿瘤试验表明,底物甲氧基-去甲-拉帕醌 1 和 4-二茂铁基衍生物 2c 具有良好的活性。