The structure–activity relationship study on 2-, 5-, and 6-position of the water soluble 1,4-dihydropyridine derivatives blocking N-type calcium channels
作者:Takashi Yamamoto、Seiji Niwa、Seiji Ohno、Munetaka Tokumasu、Yoko Masuzawa、Chika Nakanishi、Akira Nakajo、Tomoyuki Onishi、Hajime Koganei、Shin-ichi Fujita、Tomoko Takeda、Morikazu Kito、Yukitsugu Ono、Yuki Saitou、Akira Takahara、Seinosuke Iwata、Masataka Shoji
DOI:10.1016/j.bmcl.2008.07.096
日期:2008.9
In order to find an injectable and selective N-type calcium channel blocker, we have performed the structure-activity relationship (SAR) study on the 2-, 5-, and 6-position of 1,4-dihydropyridine-3-carboxylate derivative APJ2708 (2), which is a derivative of Cilnidipine and has L/N-type calcium channel dual inhibitory activities. As a consequence of the optimization, 6-dimethylacetal derivative 7 was found to have an effective inhibitory activity against N-type calcium channels with more than 170-fold lower activity for L-type channel compared to that of APJ2708. (C) 2008 Elsevier Ltd. All rights reserved.