Interaction of remote functional groups (amide and amine) in steroidal compounds after electron ionization
摘要:
AbstractElectron impact ionization of steroidal compounds with two diferently substituted functional groups (amide and amine) at remote positions leads to the interaction of these groups in ion‐neutral complexes after the detachment of one of them. Two situations may be encountered, depending on which group is more easily detached from low‐energy parent ions: (i) when the formation of the immonium ion is preferred, a very efficient proton transfer to the amide is observed leading to abundant [M− imine]+· and subsequent daughter ions; (ii) when the detachment of the amide is preferred, hydrogen exchanges occur with the amine group, and fragment ions may be observed resulting from the addition of both groups in a proton‐bound structure.
[EN] STEROID ALKALOIDS AND USES THEREOF AS ANTIMICROBIAL AGENTS AGAINST ELECTRON TRANSPORT-DEFICIENT MICROBES AND AS POTENTIATORS FOR ANTIMICROBIAL AGENTS AGAINST PATHOGENIC BACTERIA [FR] ALCALOÏDES STÉROÏDIENS ET LEURS UTILISATIONS EN TANT QU'AGENTS ANTIMICROBIENS CONTRE LES MICRO-ORGANISMES À DÉFAUT DE TRANSPORT D'ÉLECTRONS ET EN TANT QU'EXHAUSTEURS D'AGENTS MICROBIENS CONTRE DES BACTÉRIES PATHOGÈNES
STEROID ALKALOIDS AND USES THEREOF AS ANTIMICROBIAL AGENTS AGAINST ELECTRON TRANSPORT-DEFICIENT MICROBES AND AS POTENTIATORS FOR ANTIMICROBIAL AGENTS AGAINST PATHOGENIC BACTERIA
申请人:Malouin François
公开号:US20140018312A1
公开(公告)日:2014-01-16
The present invention includes novel compounds based on the tomatidine skeleton as well as composition comprising these compounds alone and in combination with known compounds, which exhibit antimicrobial activity against extracellular or intracellular electron transport-deficient microbes and/or increase the antimicrobial activity of aminoglycoside antibiotics against their targets, and which are useful as antibacterial agents for treatment or prophylaxis of monomicrobiotic or polymicrobic bacterial infections or for the reduction of antibiotic resistance development in animals or in humans, or for use as antiseptics or agents for sterilization or disinfection.