Synthesis, crystal and molecular structure of 1,3-dimethyl-10-benzyl-2,4,9-trioxo-1,3,6,7,8,10-hexahydro-1,3-diazepino-purine

Article abstract of DOI:10.1007/BF01180116

The crystal and molecular structure of the title compound, obtained as a result of intramolecular cyclization of 4-(8-benzylaminotheophylline-7-yl)-butanoic acid, has been determined by X-ray diffraction.Two rings, (comprising the theophylline skeleton) a