<i>N</i><sup>G</sup>-Acylated Imidazolylpropylguanidines as Potent Histamine H<sub>4</sub> Receptor Agonists: Selectivity by Variation of the <i>N</i><sup>G</sup>-Substituent
3-(1H-Imidazol-4-yl)propylguanidine (SK&F 91486, 4) was identified as a potent partial agonist at the human histamine H-3 receptor (hH(3)R) and human histamine H-4 receptor (hH(4)R). With the aim to increase selectivity for the hH4R, the guanidine group in 4 was acylated. N-1-Acetyl-N-2-[3-(1H-imidazol-4-yl)propyl]guanidine (UR-PI288, 13) was a potent full agonist at the hH(4)R (pEC(50) = 8.31; alpha = 1.00), possessing more than 1000- and 100-fold selectivity relative to the hH(1)R and hH(2)R, respectively, and possessing only low intrinsic activity (alpha = 0.27) at the hH(3)R.
GUANIDINYLATION REAGENTS
申请人:THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
公开号:EP0983232A2
公开(公告)日:2000-03-08
US6072075A
申请人:——
公开号:US6072075A
公开(公告)日:2000-06-06
US6380358B1
申请人:——
公开号:US6380358B1
公开(公告)日:2002-04-30
[EN] GUANIDINYLATION REAGENTS<br/>[FR] REACTIFS DE GUANIDINYLATION
申请人:——
公开号:WO1998052917A2
公开(公告)日:1998-11-26
[EN] Trisubstituted N-protected guanidines and methods for use as guanidinylating reagents to yield N-protected guanidine derivatives. [FR] La présente invention concerne des guanidines trisubstituées N-protégées et des procédés permettant d'utiliser ces dernières comme réactifs de guanidinylation afin d'obtenir des dérivés de guanidine N-protégés.