Synthesis and structure-activity relationship of novel glycylcycline derivatives leading to the discovery of GAR-936

A number of new glycylcyclines were synthesized for structure-activity relationship study. Many of the derivatives exhibit potent, broad spectrum antibacterial activity against both tetracycline susceptible and resistant organisms. GAR-936 (TBG-MINO) shows better activity than the previously reported DMG-MINO and DMG-DMDOT.