Protorubradirin

Description

Protorubradirin is an antibiotic that can be isolated from Streptomyces achromogenes var. rubradirin together with Rubradirin. Protorubradirin has inhibitory activity against HIV reverse transcriptase. In vitro studies have shown that Protorubradirin also inhibits Staphylococcus aureus strains and Streptococci. In infected mice, subcutaneous injection of Protorubradirin showed in vivo inhibitory efficacy against antibiotic-resistant Staphylococcus aureus strains. However, oral administration may result in a significant reduction in the activity of Protorubradirin, possibly due to faster cleavage of its C-nitroso sugar in the acidic gastric environment compared to Rubradirin.