Muscarinic M3 receptor antagonists with (2R)-2-[(1R)-3,3-Difluorocyclopentyl]-2-hydroxyphenylacetamide Structures. Part 2
作者:Yoshio Ogino、Norikazu Ohtake、Kensuke Kobayashi、Toshifumi Kimura、Toru Fujikawa、Takuro Hasegawa、Kazuhito Noguchi、Toshiaki Mase
DOI:10.1016/s0960-894x(03)00350-0
日期:2003.7
led to a 4-aminopiperidinamide (2l) with a K(i) value of 5.1 nM and with a selectivity of the M(3) receptor that was 46-fold greater than that of the M(2) receptor. Further derivatization of 2l by inserting a spacer group or by incorporating alkyl group(s) into the amine part resulted in the identification of an 4-(aminoethyl)piperidinamide 2l-b with a K(i) value of 3.7 nM for the M(3) receptor and a
进行了我们原始毒蕈碱型M(3)受体拮抗剂1的胺部分的优化,以鉴定出优于1的M(3)受体拮抗剂。对氮原子上带有疏水取代基的各种二胺部分的化合物进行了筛选。 M(3)受体的结合亲和力和M(3)超过M(1)和M(2)受体的选择性。该过程导致了4-氨基哌啶酰胺(2l),其K(i)值为5.1 nM,M(3)受体的选择性比M(2)受体大46倍。通过插入间隔基或将烷基引入胺部分进一步2l衍生化,从而鉴定出K(i)值为3的4-(氨基乙基)哌啶酰胺2l-b。