equipotent thiazolidide 9. Extensive SAR studies on the phenyl ring of 9 led to the discovery of a novel series of potent and selective DP-IV inhibitors. Introduction of a fluorine at the 2-position proved to be crucial for the potency of this series. The 2,5-difluoro (22q) and 2,4,5-trifluoro (22t) analogues were potent inhibitors of DP-IV (IC(50)=270, 119nM, respectively).
内部筛选
铅β-
氨基酰基脯
氨酸8的修饰得到了等价的
噻唑烷化物9。对9的苯环的广泛
SAR研究导致发现了一系列新的有效的和选择性的DP-IV
抑制剂。事实证明,在2位上引入
氟对于该系列的效能至关重要。2,5-二
氟(22q)和2,4,5-三
氟(22t)类似物是DP-IV的有效
抑制剂(分别为IC(50)= 270、119nM)。