STRUCTURAL INVESTIGATIONS AND STRUCTURE-ACTIVITY RELATIONSHIPS IN A SERIE OF NEW ANTIBIOTIC 16- MEMBERED MACROLIDES

Abstract

This study is fundamental research on the structure- activity relationships in 16-membred macrolides. It is based on the molecular modelling (molecular mechanics, molecular dynamics, distribution de Boltzmann, PM3, SAR,). We defined the structural motives intervening in antibiotic macrolide properties. The compounds substituted in positions (C2, C4, C8, and C15) are the most stables and the less stable is substituted in C12. The rokitamycine which has the most elevated value of partition coefficient: 3.06. This antibiotic is lipophilic, so it has good permeability across the biological membrane, better fixation on plasma proteins and elimination by metabolic route.