Substituted 8-phenylxanthines and their use as bronchodilators are described. Processes for their preparation and use as well as pharmaceutical compositions containing them are also described. The novel compounds have the following formula:
wherein each of R and R1, which are the same or different, is e.g. a hydrogen atom or an alkyl radical having from to six carbon atoms; the dashed lines mean that the one or two optional substituents may only be in the three and/or four positions; X is e.g. a hydrogen atom; and Y e.g. is OH or an amino group, which amino group may be substituted in a specific way; or a pharmaceutically acceptable salt thereof; with the proviso that the compound 8-(4-sulfophenyl)-theophylline is excluded.
Synthesis of xanthines as adenosine antagonists, a practical quantitative structure-activity relationship application
作者:Harriet W. Hamilton、Daniel F. Ortwine、Donald F. Worth、Edward W. Badger、James A. Bristol、Robert F. Bruns、Stephen J. Haleen、Robert P. Steffen
DOI:10.1021/jm00146a016
日期:1985.8
A set of 56 8-phenylxanthines, previously tested for adenosine antagonism (adenosine A1 receptor affinity), was analyzed by quantitative structure-activity relationship (QSAR) techniques. The resulting QSAR revealed that (1) the most potent receptor binders had already been made in this series and thus suggested the termination of synthesis of compounds with additional phenyl substituents to increase