57553-18-1Relevant academic research and scientific papers
Cephem Compounds with Latent Reactive Groups
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Paragraph 0362; 0364; 0373; 0375, (2019/04/18)
Cephem and penem compounds having a styrylmethylene moiety at the 3-position in the cephem or penem ring to which a positively charged leaving group is bonded and wherein the leaving group contains a vicinal diol or is bonded to a unsubstituted or substituted catechol. The leaving group can be a positively charge nitrogen leaving group. Cephems include cephalosporins, cephamycins, carbacephems, and oxacephems. Penems include penems, carbapenems and oxapenems. Preferred cephems are cephalosporins. Preferred penems are carbapenems. Compounds exhibit antibiotic activity against Gram-negative bacteria and/or Gram-positive bacteria. Compounds exhibit antibiotic activity against bacteria which exhibit multi-drug resistance. Compounds of the invention exhibit antibiotic activity against bacterial strains which produce extended spectrum beta-lactamases (ESBL), which produce AmpC beta-lactamases or which produce a carbapenemase. Pharmaceutical compositions comprising one or more cephems or penems or methods of treatment of bacterial infections with such compounds and compositions.
Design, synthesis, and biological evaluation of Erythrina alkaloid analogues as neuronal nicotinic acetylcholine receptor antagonists
Crestey, Fran?ois,Jensen, Anders A.,Borch, Morten,Andreasen, Jesper Tobias,Andersen, Jacob,Balle, Thomas,Kristensen, Jesper Langgaard
supporting information, p. 9673 - 9682 (2014/01/06)
The synthesis of a new series of Erythrina alkaloid analogues and their pharmacological characterization at various nicotine acetylcholine receptor (nAChR) subtypes are described. The compounds were designed to be simplified analogues of aromatic erythrinanes with the aim of obtaining subtype-selective antagonists for the nAChRs and thereby probe the potential of using these natural products as scaffolds for further ligand optimization. The most selective and potent nAChR ligand to come from the series, 6,7-dimethoxy-2- methyl-1,2,3,4-tetrahydroisoquinoline (3c) (also a natural product by the name of O-methylcorypalline), displayed submicromolar binding affinity toward the α4β2 nAChR with more than 300-fold selectivity over α4β4, α3β4, and α7. Furthermore, this lead structure (which also has inhibitory activity at monoamine oxidases A and B and at the serotonin and norepinephrine transporters) showed antidepressant-like effect in the mouse forced swim test at 30 mg/kg.
Modified B-alkylcatecholboranes as radical precursors
Luethy, Monique,Darmency, Vincent,Renaud, Philippe
supporting information; experimental part, p. 547 - 552 (2011/03/22)
Generation of radicals from B-alkylcatecholboranes represents an efficient tin-free procedure for the generation of alkyl radicals. A modified version of this method has been developed. The simple catechol is replaced by a dihydroxylated tetrahydroisoquin
