Synthesis, Structure−Activity Relationships, and Pharmacokinetic Profiles of Nonpeptidic α-Keto Heterocycles as Novel Inhibitors of Human Chymase
作者:Fumihiko Akahoshi、Atsuyuki Ashimori、Hiroshi Sakashita、Takuya Yoshimura、Teruaki Imada、Masahide Nakajima、Naoko Mitsutomi、Shigeki Kuwahara、Tatsuyuki Ohtsuka、Chikara Fukaya、Mizuo Miyazaki、Norifumi Nakamura
DOI:10.1021/jm000496v
日期:2001.4.1
We designed nonpeptidic chymase inhibitors based on the structure of a peptidic compound (1) and demonstrated that the combination of a pyrimidinone skeleton as a P3-P2 scaffold and heterocycles as P1 carbonyl-activating groups can function as a nonpeptidic chymase inhibitor. In particular, introduction of heterobicycles such as benzoxazole resulted in more potent chymase-inhibitory activity. Detailed
我们基于肽化合物(1)的结构设计了非肽糜酶抑制剂,并证明了作为P3-P2支架的嘧啶酮骨架和作为P1羰基活化基团的杂环的组合可以用作非肽糜酶抑制剂。尤其是,引入异质双环化合物(如苯并恶唑)会产生更强的糜蛋白酶抑制活性。详细的结构活性关系研究对嘧啶酮环的2位上的苯并恶唑部分和取代基表明,2r(Y-40079)具有最强的糜蛋白酶抑制活性(K(i)= 4.85 nM)。该化合物对非人类来源的乳糜也有效,并且相对于其他蛋白酶显示出对乳糜的良好选择性。大鼠的药代动力学研究表明,口服后2r吸收缓慢,并显示令人满意的生物利用度(BA)(T(max)= 6.0 +/- 2.3 h,BA = 19.3 +/- 6.6%,t(1/2)= 35.7 +/- 13.3小时)。总之,2r是一种新型的,有效的,口服活性的糜酶抑制剂,它将是阐明糜酶的病理生理作用的有用工具。