1,3,8-Triazaspiro[4.5]decane-2,4-diones as Efficacious Pan-Inhibitors of Hypoxia-Inducible Factor Prolyl Hydroxylase 1–3 (HIF PHD1–3) for the Treatment of Anemia
摘要:
The discovery of 1,3,8-triazaspiro[4.5]decane-2,4-diones (spirohydantoins) as a structural class of pan-inhibitors of the prolyl hydroxylase (PHD) family of enzymes for the treatment of anemia is described. The initial hit class, spirooxindoles, was identified through affinity selection mass spectrometry (AS-MS) and optimized for PHD2 inhibition and optimal PK/PD profile (short-acting PHDi inhibitors). 1,3,8-Triazaspiro[4.5]decane-2,4-diones (spirohydantoins) were optimized as an advanced lead class derived from the original spiroindole hit. A new set of general conditions for C-N coupling, developed using a high-throughput experimentation (HTE) technique, enabled a full SAR analysis of the spirohydantoins. This rapid and directed SAR exploration has resulted in the first reported examples of hydantoin derivatives with good PK in preclinical species. Potassium channel off-target activity (hERG) was successfully eliminated through the systematic introduction of acidic functionality to the molecular structure. Undesired upregulation of alanine aminotransferese (ALT) liver enzymes was mitigated and a robust on-/off-target margin was achieved. Spirohydantoins represent a class of highly efficacious, short-acting PHD1-3 inhibitors causing a robust erythropoietin (EPO) upregulation in vivo in multiple preclinical species. This profile deems spirohydantoins as attractive short-acting PHDi inhibitors with the potential for treatment of anemia.
Palladium-Catalyzed Synthesis of Functionalized Tetraarylphosphonium Salts
作者:David Marcoux、André B. Charette
DOI:10.1021/jo702355c
日期:2008.1.1
An efficient method to synthesize functionalized tetraarylphosphoniumsalts is described. This palladium-catalyzed coupling reaction between aryl iodides, bromides, or triflates and triphenylphosphine generates phosphonium salts in high yields. The coupling is compatible with a variety of functional groups such as alcohols, ketones, aldehydes, phenols, and amides.
[EN] ABHD6 ANTAGONISTS FOR PROMOTING BROWNING OF WHITE ADIPOSE TISSUE AND BROWN ADIPOSE TISSUE FUNCTIONALITY<br/>[FR] ANTAGONISTES ABHD6 FAVORISANT LE BRUNISSEMENT DES TISSUS ADIPEUX BLANCS ET FONCTIONNALITÉ DES TISSUS ADIPEUX BRUNS
申请人:VAL CHUM LTD PARTNERSHIP
公开号:WO2015127559A1
公开(公告)日:2015-09-03
The present disclosure relates to compounds of formula I : compositions containing same and methods for treating or preventing a condition associated with brown adipose tissue dysfunction in a subject and/or for converting white adipose tissue into beige/brite adipose tissue.
SPIROCYCLIC COMPOUNDS AS TRYPTOPHAN HYDROXYLASE INHIBITORS
申请人:Roivant Sciences GmbH
公开号:US20180092918A1
公开(公告)日:2018-04-05
The present invention is directed to spirocyclic compounds which are inhibitors of tryptophan hydroxylase (TPH), particularly isoform 1 (TPH1), that are useful in the treatment of diseases or disorders associated with peripheral serotonin including, for example, gastrointestinal, cardiovascular, pulmonary, inflammatory, metabolic, and low bone mass diseases, as well as serotonin syndrome, and cancer.