Molecular modelling of HIV-1 reverse transcriptase inhibitors

Structural correlates of antifungal and cytotoxic activity of brefeldin A: the importance of a rigid planar lactone ring

Molecular modelling of brefeldin A and its derivatives shows that the presence of a rigid and planar lactone ring conformation is necessary for cytotoxic and anti-fungal activity. Cytotoxic compounds had lactone ring torsion angles of -28.77 +/- 6.13 degrees, while non-cytotoxic compounds had torsion angles of -88.25 +/- 14.6 degrees.

Identification of a pharmacophore for nucleoside analog inhibitors directed at HIV-1 reverse transcriptase

An 'active analog' approach to receptor mapping was used to identify a pharmacophore for a set of thymidine nucleoside analog inhibitors of HIV-1 reverse transcriptase. The preliminary results indicate that the O2, O4', and O5' atoms are capable of adopting a unique pharmacophoric pattern which may be the key to their recognition by reverse transcriptase.