Exploration of a Series of 5-Arylidene-2-thioxoimidazolidin-4-ones as Inhibitors of the Cytolytic Protein Perforin
摘要:
A series of novel 5-arylidene-2-thioxoimidazolidin-4-ones were investigated as inhibitors of the lymphocyte-expressed pore-forming protein perform. Structure activity relationships were explored through variation of an isoindolinone or 3,4-dihydroisoquinolinone subunit on a fixed 2-thioxoimidazolidin-4-one/thiophene core. The ability of the resulting compounds to inhibit the lytic activity of both isolated perform protein and perforin delivered in situ by natural killer cells was determined. A number of compounds showed excellent activity at concentrations that were nontoxic to the killer cells, and several were a significant improvement on previous classes of inhibitors, being substantially more potent and soluble. Representative examples showed rapid and reversible binding to immobilized mouse perforin at low concentrations (<= 2.5 mu M) by surface plasmon resonance and prevented formation of perforin pores in target cells despite effective target cell engagement, as determined by calcium influx studies. Mouse PK studies of two analogues showed T-1/2 values of 1.1-1.2 h (dose of 5 mg/kg iv) and MTDs of 60-80 mg/kg (ip).
[EN] SELECTIVE LIGANDS FOR TAU AGGREGATES<br/>[FR] LIGANDS SÉLECTIFS POUR AGRÉGATS TAU
申请人:KARIN & STEN MORTSTEDT CBD SOLUTIONS AB
公开号:WO2019025595A1
公开(公告)日:2019-02-07
The invention provides compounds of formula (I) and compositions comprising compounds of formula (I). The invention further provides uses of the compounds of formula (I) and compositions comprising compounds of formula (I), including the use of such compounds for the detection of tau deposits, and the use of such compounds and compositions as diagnostic agents in the diagnosis or monitoring of the progression of a disease or disorder such as Alzheimer's disease or corticobasal degeneration, or for the prevention or treatment of a disease or disorder such as Alzheimer's disease or corticobasal degeneration.
Distinct Heterocyclic Moieties Govern the Selectivity of Thiophene‐Vinylene‐Based Ligands towards Aβ or Tau Pathology in Alzheimer's Disease
作者:Linnea Björk、Hamid Shirani、Yogesh Todarwal、Mathieu Linares、Ruben Vidal、Bernardino Ghetti、Patrick Norman、Therése Klingstedt、K. Peter R. Nilsson
DOI:10.1002/ejoc.202300583
日期:——
variety of fluorescent thiophene-vinylene-based ligands was synthesized. Ligands with specific chemical composition displayed selectivity towards distinct proteinaggregates in tissue sections with Alzheimer's disease pathology and distinct heterocyclic moieties governed the selectivity of the ligand towards Aβ or tau pathology. We foresee that these findings will aid in designing ligands towards disease-associated
Tau be or not tau be.合成了多种基于荧光噻吩-乙烯基的配体。具有特定化学成分的配体对阿尔茨海默病病理学组织切片中不同的蛋白质聚集体表现出选择性,不同的杂环部分控制配体对 Aβ 或 tau 病理学的选择性。我们预计这些发现将有助于设计针对疾病相关蛋白质聚集体的配体。
SELECTIVE LIGANDS FOR TAU AGGREGATES
申请人:KARIN & STEN MORTSTEDT CBD SOLUTIONS AB
公开号:US20200369659A1
公开(公告)日:2020-11-26
The invention provides compounds of formula (I) and compositions comprising compounds of formula (I). The invention further provides uses of the compounds of formula (I) and compositions comprising compounds of formula (I), including the use of such compounds for the detection of tau deposits, and the use of such compounds and compositions as diagnostic agents in the diagnosis or monitoring of the progression of a disease or disorder such as Alzheimer's disease or corticobasal degeneration, or for the prevention or treatment of a disease or disorder such as Alzheimer's disease or corticobasal degeneration.
Exploration of a Series of 5-Arylidene-2-thioxoimidazolidin-4-ones as Inhibitors of the Cytolytic Protein Perforin
作者:Julie A. Spicer、Gersande Lena、Dani M. Lyons、Kristiina M. Huttunen、Christian K. Miller、Patrick D. O’Connor、Matthew Bull、Nuala Helsby、Stephen M. F. Jamieson、William A. Denny、Annette Ciccone、Kylie A. Browne、Jamie A. Lopez、Jesse Rudd-Schmidt、Ilia Voskoboinik、Joseph A. Trapani
DOI:10.1021/jm401604x
日期:2013.12.12
A series of novel 5-arylidene-2-thioxoimidazolidin-4-ones were investigated as inhibitors of the lymphocyte-expressed pore-forming protein perform. Structure activity relationships were explored through variation of an isoindolinone or 3,4-dihydroisoquinolinone subunit on a fixed 2-thioxoimidazolidin-4-one/thiophene core. The ability of the resulting compounds to inhibit the lytic activity of both isolated perform protein and perforin delivered in situ by natural killer cells was determined. A number of compounds showed excellent activity at concentrations that were nontoxic to the killer cells, and several were a significant improvement on previous classes of inhibitors, being substantially more potent and soluble. Representative examples showed rapid and reversible binding to immobilized mouse perforin at low concentrations (<= 2.5 mu M) by surface plasmon resonance and prevented formation of perforin pores in target cells despite effective target cell engagement, as determined by calcium influx studies. Mouse PK studies of two analogues showed T-1/2 values of 1.1-1.2 h (dose of 5 mg/kg iv) and MTDs of 60-80 mg/kg (ip).
A metal-free cascade reaction of β-halo-α,β-unsaturated aldehydes and 1,4-dithiane-2,5-diols: synthesis of polycyclic 2-formylthiophenes
A metal-free cascade reaction strategy has been developed for the synthesis of novel polycyclic 2-formylthiophenes from β-halo-α,β-unsaturatedaldehydes and 1,4-dithiane-2,5-diol. Recyclable polymer supported organic base was used to perform the reaction process. This synthetic protocol was applied to synthesize several novel polycyclic thiophenes including steroidal D-ring annelated thiophene. Our