New 2-Aminothiazoline derivatives lower blood pressure of spontaneously hypertensive rats (SHR) via I1-imidazoline and alpha-2 adrenergic receptors activation
摘要:
2-Aminothiazolines share an isosteric relationship with imidazolines and oxazolines with antihypertensive activity mainly mediated by the imidazoline I-1-receptor. In the present work, we have prepared five aminothiazolines, following a previously described synthetic pathway. Aminothiazolines derived from dicyclo-propylmethylamine (ATZ1) and cyclohexylamine (3) are unprecedented in the literature. Competitive radioligand assay was carried out with all synthetic compounds, and the I-1 receptor affinity in comparison to rilmenidine in PC12 cells was determined. Surprisingly, the rilmenidine isoster (ATZ1) showed no I-1-receptor interaction. Diethyl (ATZ4) and 2-ethyl-hexylamine (ATZ5) derivatives bind to the receptor with 11.98 and 10.94 nmol/l, respectively. These compounds were selected for in vivo experiments. Both compounds reduced the blood pressure of spontaneously hypertensive rats (SHR). The hypotensive effect of these compounds was abrogated in the presence of a(2) adrenergic (yohimbine) and I-1 (efaroxan) receptor antagonists suggesting that both aminothiazolines bind to the adrenergic and imidazoline receptors. Lipinski's descriptors of the synthesized aminothiazolines were calculated and are similar to the known imidazoline I-1 receptor ligands. 3D-Similarity between ATZ5 and agmatine, the natural imidazoline receptor ligand, was also observed.
(2-hydroxy)ethyl-thioureas useful as modulators of alpha2B adrenergic receptors
申请人:ALLERGAN SALES, INC.
公开号:US20020161051A1
公开(公告)日:2002-10-31
Compounds of formula (i) and of formula (ii)
1
wherein the symbols have the meaning disclosed in the specification, specifically or selectively modulate &agr;
2B
and/or &agr;
2C
adrenergic receptors in preference over &agr;
2A
adrenergic receptors, and as such are useful for alleviating chronic pain and allodynia and have no or only minimal cardivascular and/or sedatory activity.
Prodrugs of a 3-(pyrrol-2-ylmethylidene)-2-indolinone derivatives
申请人:Sugen. Inc.
公开号:US20030100555A1
公开(公告)日:2003-05-29
The present invention relates to pyrrole substituted 2-indolinone compounds and their pharmaceutically acceptable salts which modulate the activity of protein kinases and therefore are expected to be useful in the prevention and treatment of protein kinase related cellular disorders such as cancer.
申请人:The Board of Regents of the Nevada System of Higher Education on Behalf of the Unive. of Nevada
公开号:US20180118770A1
公开(公告)日:2018-05-03
Provided herein are N-heterocyclic phosphines (NHPs) useful in metal-free phosphorus-carbon bond forming reactions. Methods for preparing vinylphosphonates using NHPs also are provided. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
Utility of Bifunctional <i>N</i>-Heterocyclic Phosphine (NHP)-Thioureas for Metal-Free Carbon–Phosphorus Bond Construction toward Regio- and Stereoselective Formation of Vinylphosphonates
作者:Karimulla Mulla、Kyle L. Aleshire、Paul M. Forster、Jun Yong Kang
DOI:10.1021/acs.joc.5b02184
日期:2016.1.4
practical protocol for completely regioselective and highly stereoselective synthesis of vinyldiazaphosphonates from N-heterocyclic phosphine (NHP) and allenes via phospha-Michael/intramolecular nucleophilic substitution reaction has been developed. This transformation enabled the synthesis of valuable densely functionalized vinyldiazaphosphonates with a β-, γ-unsaturated ester moiety under mild reaction
Potential antitrypanosomal agents. 1,N2-Disubstituted 2-amino-5-hydroxy-4-methylnaphtho[1,2-d]thiazolium salts and related compounds
作者:Peter Ulrich、Anthony Cerami
DOI:10.1021/jm00348a009
日期:1982.6
2-amino group was associated with high antitrypanosomal activity. Some analogues unsubstituted at the 1-position, a known class of compounds, were also active. None of the derivatives significantly prolonged the survival of T. brucei infected mice. Inhibition of activity in vitro by bovine serum albumin was observed. Because of the structural novelty of these agents in comparison with known trypanocides