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The thiosemicarbazones of beta-carboline-3-carboxaldehyde (compound 2) and 3-acetyl-beta-carboline (compound 3) were found to effectively inhibit the in vitro growth of the promastigote form of Leishmania donovani, 50% inhibition being obtained at concentrations of 5.0 and 2.5 microM, respectively, while irreversible growth inhibition was achieved at 40… (More)
Seven 3-N-substituted derivatives of 3-amino-beta-carboline were synthesized and their affinities for the benzodiazepine receptor were assessed in vitro. Two compounds, 3-(ethylamino)-beta-carboline and 3-[(methoxycarbonyl)amino]-beta-carboline (beta-CMC), showing IC50 values of 460 and 71 nM, respectively, were selected for in vivo studies. The former… (More)
Hybrid molecules incorporating pharmacologically important structural features of both 3-carboxy-beta-carbolines and 1,4-benzodiazepines were synthesized, and their affinities for the benzodiazepine receptor were determined in vitro. One of these hybrids, 8,14-dioxo-13,14-dihydro-8H-indolo[3',2':4,5]pyrido[2,1-c] [1,4]benzodiazepine (13), demonstrated high… (More)
The conformations of codlemone (8,10-dodecadienol) and of a model analog have been studied by CNDO calculations. Stable conformations are found for the folded forms when the polarity of the solvent is taken into account.
The X-ray crystal structure of 3-(methoxycarbonyl) amino-beta-carboline, a selective antagonist of the sedative effects of diazepam having a high affinity for the benzodiazepine receptor, has been determined. The results were compared with structural information obtained from this compound, both in the solid state and in dilute solution, by use of Fourier… (More)