Cardioselective Antiischemic ATP-Sensitive Potassium Channel (KATP) Openers. 6. Effect of Modifications at C6 of Benzopyranyl Cyanoguanidines
摘要:
The effect on potency and selectivity of modifications at the C6 position of the cardioprotective K-ATP Opener BMS-180448 (2) is described. Structure-activity studies show that a variety of electron-withdrawing groups (ketone, sulfone, sulfonamide, etc.) are tolerated for cardioprotective activity as measured by EC25 values for an increase in time to the onset of contracture in globally ischemic rat, hearts. Changes made to the sulfonamido substituent indicate that compounds derived from secondary lipophilic amines are preferred for good cardioprotective potency and selectivity. The diisobutyl analogue 27 (EC25 = 0.04 mu M) is the most potent compound of this series. The cardiac selectivity of 27 results from a combination of reduced vasorelaxant potency and enhanced cardioprotective potency relative to the potent vasodilating K-ATP openers (e.g., cromakalim). The diisobutylsulfonamide analogue 27 is over 4 orders of magnitude more cardiac selective than cromakalim (1), These results support the hypothesis that the cardioprotective and vasorelaxant properties of K-ATP openers follow distinct structure-activity relationships. The mechanism of action of 27 appears to involve opening of the cardiac K-ATP as its cardioprotective effects are abolished by the K-ATP blocker glyburide.
Herbicidally active dihalogenated imidazolecarboxylic acid amides,
申请人:Bayer Aktiengesellschaft
公开号:US04402732A1
公开(公告)日:1983-09-06
A dihalo-imidazolecarboxylic acid amide of the formula ##STR1## in which X each independently is chlorine or bromine, R.sup.1 is fluoroalkyl or fluorochloroalkyl, and R.sup.2 is hydrogen or alkyl which possesses herbicidal activity and novel intermediates there
Herbicidally active fluorine-containing 4,6-diamino-s-triazines
申请人:Bayer Aktiengesellschaft
公开号:US04459151A1
公开(公告)日:1984-07-10
Fluorine-containing 4,6-diamino-s-triazines of the formula ##STR1## wherein X is a chlorine atom, an alkoxy radical having 1 to 4 carbon atoms, an alkylthio radical having 1 to 4 carbon atoms or the azide radical, R.sup.1, R.sup.2 and R.sup.3 each independently is a hydrogen atom or an aliphatic radical, and R.sup.4 is a fluoroalkyl or fluorochloroalkyl radical, which possess herbicidal activity. Intermediates wherein X is chlorine and --NR.sup.1 R.sup.2 is replaced by chlorine are also new.
[EN] ERGOLINE DERIVATIVES FOR USE IN MEDICINE<br/>[FR] DÉRIVÉS D'ERGOLINE DESTINÉS À ÊTRE UTILISÉS EN MÉDECINE
申请人:XOC PHARMACEUTICALS INC
公开号:WO2018223065A1
公开(公告)日:2018-12-06
The present invention provides novel neuromodulatory compounds and compositions thereof. The invention also relates to methods of treating various diseases, disorders, and conditions using the compounds of this invention; processes for preparing the compounds of this invention; as well as intermediates for the preparation compounds.
2-Aminopyrazolo[1,5-a]pyrimidines as potent and selective inhibitors of JAK2
作者:Mark W. Ledeboer、Albert C. Pierce、John P. Duffy、Huai Gao、David Messersmith、Francesco G. Salituro、Suganthini Nanthakumar、Jon Come、Harmon J. Zuccola、Lora Swenson、Dina Shlyakter、Sudipta Mahajan、Thomas Hoock、Bin Fan、Wan-Jung Tsai、Elaine Kolaczkowski、Scott Carrier、James K. Hogan、Richard Zessis、S. Pazhanisamy、Youssef L. Bennani
DOI:10.1016/j.bmcl.2009.10.053
日期:2009.12
Constitutive activation of the EPO/JAK2 signaling cascade has recently been implicated in a variety of myeloproliferative disorders including polycythemia vera, essential thrombocythemia and myelofibrosis. In an effort to uncover therapeutic potential of blocking the EPO/JAK2 signaling cascade, we sought to discover selective inhibitors that block the kinase activity of JAK2. Herein, we describe the discovery and structure based optimization of a novel series of 2-amino-pyrazolo[1,5-a]pyrimidines that exhibit potent inhibition of JAK2. (C) 2009 Elsevier Ltd. All rights reserved.