Syntheses and reactions of some 1-substituted-7-alkyl-2-thioxopurines: X-Ray structure of 6-methylamino-7-nonyl-2-thioxopurine
作者:Karl G. Grözinger、Kay D. Onan
DOI:10.1002/jhet.5570230319
日期:1986.5
Several 1-substituted-7-alkyl-2-thioxopurines 8,9,10 were synthesized by the reaction of isothiocyanates with 1-alkyl-4-amino-5-cyanoimidazoles 3. Treatment of 3 with methyl isothiocyanate gave the Dimroth rearranged product 6-methylamino-7-alkyl-2-thioxopurines 11. The structure of 11 was unambiguously defined by X-ray crystallography.
Heteroarenobenzodiazepines. 6. Synthesis and pharmacological evaluation of CNS activities of [1,2,3]triazolo[4,5-b][1,5]-, imidazolo[4,5,-b][1,5]-, and pyrido[2,3-b][1,5]benzodiazepines. 10-Piperazinyl-4H-1,2,3-triazolo[4,5-b][1,5]benzodiazepines with neuroleptic activity
作者:Jiban K. Chakrabarti、Terrence M. Hotten、Ian A. Pullar、David J. Steggles
DOI:10.1021/jm00130a025
日期:1989.10
The synthesis of [1,2,3]triazolo[4,5-b][1,5]-, imidazolo[4,5-b][1,5]-, and pyrido[2,3-b][1,5]benzodiazepines is described. The antidopaminergic and anticholinergic activities of the compounds have been examined by the respective in vitro [3H]spiperone and [3H]QNB receptor binding assay. The neuroleptic potential has been further evaluated in terms of their ability to produce hypothermia and catalepsy
Analogs of AICA- and <i>Iso</i>AICA Ribosides and Their Methylated Base Counterparts
作者:Raymond P. Panzica、Leroy B. Townsend
DOI:10.1080/07328319908044611
日期:1999.11
A mild, convenient and efficient synthesis has been developed for imidazole-4-thiocarboxamide and imidazole-5-thiocarboxamide ribosides and the analogous selenocarboxamides. This methodology, i.e., DMF saturated with H2S or H2Se, also converts the corresponding N-methylated bases to the corresponding amides. The imidazole-4(5)-selenocarboxamides were shown to be sensitive to base (pH 11) and were easily converted back to their cyano precursors. The kinetics of these reactions were determined and they indicate that the C5 amides were more reactive than their C4 analogs.
Purine N-Oxides. I. Mono-oxides of Aminopurines<sup>1</sup>
作者:Marcus A. Stevens、David I. Magrath、Herman W. Smith、George Bosworth Brown
DOI:10.1021/ja01544a045
日期:1958.6
Montequi, Anales de la Real Sociedad Espanola de Fisica y Quimica, vol. 25, p. 185