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).
INHIBITORS OF 15-HYDROXYPROSTAGLANDIN DEHYDROGENASE FOR STIMULATING PIGMENTATION OF THE SKIN OR SKIN APPENDAGES
申请人:MICHELET JEAN-FRANCOIS
公开号:US20110014250A1
公开(公告)日:2011-01-20
Inhibitors of 15-hydroxyprostaglandin dehydrogenase (15-PGDH), for example tetrazole, styrylpyrazole, phenylfuran, phenylthiophene, phenylpyrrazole, pyrazolecarboxamide, 2-thioacetamide and azo compounds, are useful for promoting or stimulating pigmentation of the skin and/or skin appendages and/or for preventing and/or for limiting depigmentation and/or whitening of the skin and/or skin appendages, notably for preventing and/or limiting canities.
Utilisation d'un inhibiteur de 15-hydroxy prostaglandine déshydrogénase pour favoriser la pigmentation de la peau ou des phanères
申请人:L'Oréal
公开号:EP1594438B1
公开(公告)日:2013-07-17
Heterocyclic compound for stimulating or inducing the growth of the hair or eyelashes and/or slowing down their loss composition comprising it and its uses
申请人:Boulle Christophe
公开号:US20080076809A1
公开(公告)日:2008-03-27
The invention relates to a composition for caring for or making up keratinous fibers comprising a heterocyclic compound of formula (I) or of one of its salts:
in which:
Hy is a heterocycle of 4 to 7 atoms comprising a carbonyl functional group and/or a thiocarbonyl functional group and optionally being substituted and G, R
1
, R
2
and R
3
are defined in the description.