Synthesis and Mode of Action of 125I- and 3H-Labeled Thieno[2,3-c]pyridine Antagonists of Cell Adhesion Molecule Expression
摘要:
A series of thieno[2,3-c]pyridine antagonists of cell adhesion molecule (CAM) expression, such as A-205804 (1) and A-249377 (2), selectively suppressed the induced expression of E-selectin and ICAM-1 over VCAM-1. In an effort to explore the biological mechanism of action of these inhibitors, we synthesized I-125- and H-3-labeled thieno[2,3-c]pyridines 5 and 6. An isolated diazonium tetrafluoroborate salt efficiently trapped (NaI)-I-125 on very small scale (7.5 mug of (NaI)-I-125), providing the corresponding I-125-labeled thieno[2,3-c]pyridine in modest yield. Preliminary mechanistic investigations using these radiolabeled compounds revealed that, upon incubation with human umbilical vein endothelial cells (HUVECs), these inhibitors of CAM expression translocated to the cell nucleus and were noncovalently associated with macromolecules of molecular weight greater than 650 kDa.
[EN] Compounds having Formula (I) are useful for treating inflammation. Also disclosed are pharmaceutical compositions comprising compouns of Formula (I), and methods of inhibiting/treating inflammatory diseases in a mammal. [FR] L'invention concerne des composé représentés par la formule (I) qui sont utiles pour le traitement de l'inflammation. L'invention concerne également des compositions pharmaceutiques comprenant les composés représentés par la formule (I) ainsi que des méthodes d'inhibition et de traitement de maladies inflammatoires chez un mammifère.