[EN] METHODS AND COMPOSITIONS COMPRISING GUANIDINES FOR TREATING BIOFILMS [FR] MÉTHODES ET COMPOSITIONS COMPRENANT DES GUANIDINES DESTINÉS AU TRAITEMENT DE BIOFILMS
Aliphatic amino azides as key building blocks for efficient polyamine syntheses
作者:Bertrand Carboni、Aziza Benalil、Michel Vaultier
DOI:10.1021/jo00066a028
日期:1993.7
New routes to open-chain polyamines have been developed using aliphatic amino azides as common precursors for the construction of the carbon-nitrogen framework. These alpha,omega-diaminoalkane synthetic equivalents were combined with (omega-halogenoalkyl)dichloroboranes to extend the polyamine chain from the azido moiety. An extension from the free amino group can also be achieved via a Michael type addition with acrylonitrile or a reductive amination with a gamma-azido ketone. Further transformations led to a large variety of regioselectively C- or (and) N-substituted polyamines.
A New polyamine synthesis.
作者:B. Carboni、M. Vaultier、R. Carrié
DOI:10.1016/s0040-4039(00)80276-2
日期:1988.1
Synthesis and Activity of Biomimetic Biofilm Disruptors
Biofilms are often associated with human bacterial infections, and the natural tolerance of biofilms to antibiotics challenges treatment. Compounds with anti-biofilm activity could become useful adjuncts to antibiotic therapy. We used norspermidine, a natural trigger for biofilm disassembly in the developmental cycle of Bacillus subtilis, to develop guanidine and biguanide compounds with up to 20-fold increased potency in preventing biofilm formation and breaking down existing biofilms. These compounds also were active against pathogenic Staphylococcus aureus. An integrated approach involving structure activity relationships, protonation constants, and crystal structure data on a focused synthetic library revealed that precise spacing of positively charged groups and the total charge at physiological pH distinguish potent biofilm inhibitors.