Synthesis and evaluation of N-alkyl-S-[3-(piperidin-1-yl)propyl]isothioureas: High affinity and human/rat species-selective histamine H3 receptor antagonists
作者:Shinya Harusawa、Koichi Sawada、Takuji Magata、Hiroki Yoneyama、Lisa Araki、Yoshihide Usami、Kouta Hatano、Kouichi Yamamoto、Daisuke Yamamoto、Atsushi Yamatodani
DOI:10.1016/j.bmcl.2013.09.052
日期:2013.12
in the search for novel nonimidazole histamine H3 receptor (H3R) antagonists. Among them, four N-alkyl S-[3-(piperidin-1-yl)propyl]isothioureas 18, 19, 22, and 23 were found to exhibit potent and selective H3R antagonistic activities against in vitro human H3R, but were inactive against in vitro human H4R. Furthermore, three alkyl homologs 18–20 showed inactivity for histamine release in in vivo rat
为了寻找新型的咪唑组胺H 3受体(H 3 R)拮抗剂,合成了含有各种环胺的S-烷基-N-烷基异硫脲化合物。其中,四Ñ烷基小号- [3-(哌啶-1-基)丙基]异硫脲18,19,22,和23被发现表现出有效的和选择性ħ 3在体外抗人H [R拮抗活性3 R,但对体外人类H 4 R无活性。此外,三个烷基同系物18 – 20在体内大鼠脑微渗析中显示组胺释放不活跃,表明物种之间拮抗剂亲和力的差异。此外,在计算机对接研究N- [4-(4-氯苯基)丁基] -S- [3-哌啶-1-基)丙基]异硫脲19和一个较短的与人/大鼠H 3 Rs的同系物17时,发现大鼠和人类H 3 Rs的拮抗剂对接腔之间的结构差异可能是由Ala122 / Val122突变引起的。