Lipophilicity is one of the most important parameters determining pharmacodynamic and pharmacokinetic properties, as well toxicity many compounds. The subject research was to determine lipophilicity betulin-1,4-quinone hybrids using thin layer chromatography in reverse phase system computer programs calculate its theoretical models. correlation between experimental values analyzed. Lipinski’s V...

Varying the size of an alkyl side-chain group, installed by thiol–ene addition alkylthiols to poly(?-allyl caprolactone), semi-crystallinity and lipophilicity functional PCLs could be modulated achieve divergent physico-chemical properties.

Two independent methods have been developed and compared to determine the lipophilicity of a representative series of naturally occurring bile acids (BA) in relation to their structure. The BA included cholic acid (CA), chenodeoxycholic acid (CDCA), ursodeoxycholic acid (UDCA), deoxycholic acid (DCA), hyodeoxycholic acid (HDCA), ursocholic acid (UCA), hyocholic acid (HCA), as well as their glyc...

The pharmaceutical industry is currently facing a high clinical attrition rate. In order to prevent the late-stage clinical failure, many investigations on compound quality and druglikeness of compounds have been carried out. It has been widely accepted that molecular size and lipophilicity plays an important role in compound quality. Many attempts have been done to find out other factors which...

A fast gradient HPLC method (cycle time 15 min) has been developed to determine Human Serum Albumin (HSA) binding of discovery compounds using chemically bonded protein stationary phases. The HSA binding values were derived from the gradient retention times that were converted to the logarithm of the equilibrium constants (logK HSA) using data from a calibration set of molecules. The method has...

The influence of drug properties including solubility, lipophilicity, tissue partition coefficients, and in vitro transscleral permeability on ex vivo and in vivo transscleral delivery from corticosteroid suspensions was determined. Solubility, tissue/buffer partition coefficients for bovine sclera and choroid-retinal pigment epithelium (CRPE), and in vitro bovine sclera and sclera-choroid-reti...

Two predictive tools have been proposed by Austin et al. (Drug Metab Dispos 30:1497-1503, 2002) and Hallifax and Houston (Drug Metab Dispos 34:724-726, 2006) to estimate the fraction unbound in the incubation (fu(inc)). The current study was undertaken to elucidate the relative utility of these prediction tools over a range of drug lipophilicity and microsomal protein concentration. The fu(inc)...