Selective Preparations; 361. A Convenient Preparation of 2- and 4-(1-Imidazolyl)-phenols and their Benzo Analogs using thet-Butyl Group as a Positional Protective Group
Provided is a compound having an AMPA receptor function enhancing action, and useful as a prophylactic or therapeutic drug for depression, Alzheimer's disease, schizophrenia, attention deficit hyperactivity disorder (ADHD) and the like. A compound represented by the formula (I):
wherein each symbol is as defined in the present specification,
or a salt thereof.
[EN] RORγT INHIBITOR, PREPARATION METHOD THEREFOR AND USE THEREOF<br/>[FR] INHIBITEUR DE RORγT, SON PROCÉDÉ DE PRÉPARATION ET SON UTILISATION<br/>[ZH] RORγt抑制剂及其制备方法和用途
In a previous paper, we reported the N-hydroxyformamidine derivative HET0016 as a potent and selective 20-HETE synthase inhibitor. Despite its attraction as a potential therapeutic agent for cerebral diseases, the preparation of an injectable formulation of HET0016 was limited by its poor solubility under neutral conditions and instability under acidic conditions. The instability of HET0016 in acidic conditions is due to the N-hydroxyformamidine moiety, which is considered to be essential for the potent and selective activity seen in our previous study. The activity was maintained when the N-hydroxyformamidine moiety was replaced by an imidazole ring (3a; IC50 = 5.7 +/- 1.0 nM), but this was associated with a loss of selectivity for cytochrome P450s (CYPs). However, other azole derivatives such as isoxazole derivative 23 (IC50 value 38 +/- 10 nM) and pyrazole derivative 24 (IC50 value 23 +/- 12 nM) showed potent and selective activities with improved stability.
[EN] SULFONAMIDE DERIVATIVE AND USE THEREOF<br/>[FR] DÉRIVÉ DE SULFONAMIDE ET SON UTILISATION
申请人:TAKEDA PHARMACEUTICAL
公开号:WO2012137982A9
公开(公告)日:2013-02-14
Modification of a promiscuous inhibitor shifts the inhibition from γ-secretase to FLT-3
The inhibition of FLT-3 activity is an interesting target for the treatment of acute myeloid leukemia (AML). The serendipitous identification of FLT-3 inhibitors from a CK1/gamma-secretase programme provided compounds with dual inhibitory activity. We analyzed the structure-activity relationship of these inhibitors and derivatized them to arrive at compounds with reduced impact on gamma-secretase activity and enhanced FLT-3 inhibition. (C) 2012 Elsevier Ltd. All rights reserved.