Conformational restriction approach to BACE1 inhibitors II: SAR study of the isocytosine derivatives fixed with a cis-cyclopropane ring
作者:Shuji Yonezawa、Hidekuni Yamakawa、Chie Muto、Motoko Hosono、Takahiko Yamamoto、Kazunari Hattori、Masahiro Sakagami、Hiroko Togame、Yoshikazu Tanaka、Toru Nakano、Hiroshi Takemoto、Mitsuhiro Arisawa、Satoshi Shuto
DOI:10.1016/j.bmcl.2013.03.056
日期:2013.5
To improve the efficacy of the conformationally restricted BACE1 inhibitors, structural modifications were investigated using two strategies: (a) modification of the terminal aromatic ring and (b) insertion of a spacer between the aromatic rings. In the latter approach, another type of inhibitor 17 bearing an ethylene spacer between two aromatic rings was found to exhibit good BACE1 inhibitory activity, while the corresponding conformationally unrestricted compound 25 showed no activity. This result revealed an interesting effect of a conformational restriction with a cyclopropane ring. (C) 2013 Elsevier Ltd. All rights reserved.