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. 2017 Sep 5;12(9):e0183457. doi: 10.1371/journal.pone.0183457

Fig 1. Structure activity relationship between NCL812, NCL195 and NCL219.

Fig 1

Installation of a 4-tert-butyl and a C-methyl imine moiety provided NCL219 with considerably enhanced hydrolytic stability while retaining the excellent antimicrobial activity of NCL812, while guanidine to 2,4,6-triaminopyrimindine bioisosteric modification yielded NCL195, which allowed potency and drug-like character enhancement.