Clathrodin, hymenidin and oroidin, and their synthetic analogues as inhibitors of the voltage-gated potassium channels
摘要:
We have prepared three alkaloids from the Agelas sponges, clathrodin, hymenidin and oroidin, and a series of their synthetic analogues, and evaluated their inhibitory effect against six isoforms of the KO subfamily of voltage-gated potassium channels, g(v)1.1-K(v)1.6, expressed in Chinese Hamster ovary (CHO) cells using automated patch clamp electrophysiology assay. The most potent inhibitor was the (E)-N-(3(2-amino-1H-imidazol-4-yl)ally1)-4,5-dichloro-1H-pyrrole-2-carboxamide (6g) with IC50 values between 1.4 and 6.1 mu M against K(v)1.3, K(v)1.4, K(v)1.5 and K(v)1.6 channels. All compounds tested displayed selectivity against K(v)1.1 and K(v)1.2 channels. For confirmation of their activity and selectivity, compounds were additionally evaluated in the second independent system against K(v)1.1-K(v)1.6 and K(v)10.1 channels expressed in Xenopus laevis oocytes under voltage clamp conditions where IC50 values against K(v)1.3K(v)1.6 channels for the most active analogues (e.g. 6g) were lower than 1 mu M. Because of the observed low sub-micromolar IC50 values and fairly low molecular weights, the prepared compounds represent good starting points for further optimisation towards more potent and selective voltage-gated potassium channel inhibitors. (C) 2017 Elsevier Masson SAS. All rights reserved.
The present disclosure provides, inter alia, Compounds of Formulae IA, IB, IC, IIA, IIB and IIC
or pharmaceutically acceptable salts thereof that are modulators of the C5a receptor. Also provided are pharmaceutical compositions and methods of use including the treatment of diseases or disorders involving pathologic activation from C5a and non-pharmaceutical applications.
[EN] BACTERIAL EFFLUX PUMP INHIBITORS<br/>[FR] INHIBITEURS DE POMPE D'EFFLUX BACTÉRIEN
申请人:UNIV RUTGERS
公开号:WO2018218192A1
公开(公告)日:2018-11-29
Disclosed herein are compounds of formula I and salts thereof. Also disclosed are compositions comprising compounds of formula I and methods using compounds of formula I.
本文披露了公式I的化合物及其盐。还披露了包含公式I化合物的组合物以及使用公式I化合物的方法。
[EN] INDOLE DERIVATIVES AS EFFLUX PUMP INHIBITORS<br/>[FR] DÉRIVÉS D'INDOLE UTILISÉS EN TANT QU'INHIBITEURS DE POMPE D'EFFLUX
申请人:LAVOIE EDMOND J
公开号:WO2018165611A1
公开(公告)日:2018-09-13
Disclosed herein are compounds of formula (I): and salts thereof. Also disclosed are compositions comprising compounds of formula I and compounds of formula I for use in treating or preventing bacterial infections.
Non-standard amino acid conjugates of amphetamine and processes for making and using the same
申请人:Mickle Travis C.
公开号:US20080139653A1
公开(公告)日:2008-06-12
Disclosed are amphetamine prodrug compositions comprising at least one non-standard amino acid conjugate of amphetamine, a salt thereof, a derivative thereof, or a combination thereof. Methods of making and using the same are also disclosed.
申请人:The Regents of the University of Colorado, a body corporate
公开号:US20130190324A1
公开(公告)日:2013-07-25
The present invention provides compositions and methods for increasing the delivery (i.e., bioavailability) of a compound to an ocular cell. Such compositions and methods can be used to treat an ocular clinical condition. Typically, increased bioavailability or delivery of the compound to ocular cells is achieved by utilizing a membrane transporter.