A new orally bioavailable dual adenosine A2B/A3 receptor antagonist with therapeutic potential.

The synthesis and SAR of 5-heterocycle-substituted aminothiazole adenosine receptor antagonists is described. Several compounds show high affinity and selectivity for the A2B and A3 receptors. One compound (5f) shows good ADME properties in the rat and as such may be an important new compound in testing the current hypotheses proposing a therapeutic role for a dual A2B/A3 antagonist in allergic diseases

The Discovery And Optimisation of 4-(8-(3-Fluorophenyl)-1,7-naphthyridin-6-yl)cyclohexanecarboxylic acid, An Improved PDE4 Inhibitor For The Treatment of COPD.

Herein we describe the optimisation of a series of PDE4 inhibitors, with special focus on solubility and pharamcokinetics, to clinical compound 2, 4-(8-(3-fluorophenyl)-1,7-naphthyridin-6-yl)cyclohexanecarboxylic acid. Compound 2 was found to have exemplary pharmacokinetics in humans, which enabled a novel dosing regime and the achievement of high plasma drug levels without associated nausea or emesis

Solubility-Driven Optimisation of Phosphodiesterase-4 Inhibitors Leading to a Clinical Candidate

The solubility-driven optimisation of a series of 1,7-napthyridine phosphodiesterase 4 inhibitors is described. Directed structural changes resulted in increased aqueous solubility, enabling superior pharmacokinetic properties, with retention of PDE4 inhibition. A range of potent and orally bioavailable compounds with good in vivo efficacy in animal models of inflammation and reduced emetic potential compared to previously described drugs were synthesised. Compound 2d was taken forward as a clinical candidate for the treatment of COPD

Synthesis and biological properties of novel glucocorticoid androstene C-17 furoate esters.

A series of novel corticosteroid derivatives featuring C-17 furoate ester functionality have been synthesised. Profiling in vitro and in vivo has resulted in the identification of a compound with a longer duration of action and a lower oral side effect profile in rodents compared to budesonide