Phosphonates useful as modulators of t $g(g)9$g(d)2 lymphocyte activity
申请人:Montero Jean-Louis
公开号:US20060241087A1
公开(公告)日:2006-10-26
The invention concerns novel phosphonate derivatives, preparation method, use thereof as ligands modulating T γ9δ2 lymphocyte activity and pharmaceutical compositions comprising them.
Phosphonates useful as modulators of T-gamma-9-delta-2 activity
申请人:Montero Jean-Louis
公开号:US20100204184A1
公开(公告)日:2010-08-12
The invention concerns novel phosphonate derivatives, preparation method, use thereof as ligands modulating T γ9δ2 lymphocyte activity and pharmaceutical compositions comprising them.
Phosporus-containing squalene synthetase inhibitors, new intermediates and method
申请人:E.R. Squibb & Sons, Inc.
公开号:EP0324421A2
公开(公告)日:1989-07-19
Compounds which are useful as inhibitors of cholesterol biosynthesis and thus as hypocholesterolemic agents are provided which have the structure
wherein Q is
or a bond;
Z is -(CH₂)n- or -(CH₂)p-CH=CH-(CH₂)m-, wherein n is 1 to 5; p is 0, 1 or 2; m is 0, 1 or 2;
R, R¹ and R1a are the same or different and are H, lower alkyl or a metal ion; and
R² and R³ may be the same or different and are H or halogen.
New intermediates used in preparing the above compounds and method for preparing same, pharmaceutical compositions containing such compounds and a method for using such compounds to inhibit cholesterol biosynthesis are also provided.
gamma9delta2T cells represent the most abundant population of human blood gammadeltaT lymphocytes. They produce and promote strong cytotoxic activity against many pathogens that are implicated in several human infectious diseases. Their activation requires their exposure to small phosphorus-containing antigens in the family of prenyl pyrophosphates and their related biosynthetic precursors such as isopentenyl pyrophosphate (IPP) and dimethylallyl pyrophosphate (DMAPP), which are naturally occurring metabolites in mycobacteria and several other microbial pathogens. The broad specificity in the recognition of these molecules by the T-lymphocyte population expressing a Vgamma9Vdelta2 cell receptor might facilitate their manipulation by designing small potent synthetic agonist ligands. In this paper, we describe the synthesis and the biological evaluation of new pyrophosphonate compounds as new isosteric analogues of natural prenyl pyrophosphates. Several prenyl and alkenyl pyrophosphonate with different chain lengths and degrees of insaturation (24-28, 48-50, and 64-66) were tested as well as the alkoxymethylpyrophosphonic analogue of IPP (compound 76) as its closest isostere. Several of them appeared to be better activators of Vgamma9Vdelta2 T cell proliferation than IPP. These results open the perspective of a potential use of isoprenoides pyrophosphonates as specific immunoregulatory molecules.