4-Aminosubstituted 1,6-dyhidropyrazolo|3,4-e||1,4| diazepines: the synthesis, NMR-spectral and quantum-chemical study - S. V. Kemskyi; Yu. S. Boiko; A. V. Bolbut; Yu. Suikov; A. A. Kyrylchuk; M. V. Vovk (Journal of organic and pharmaceutical chemistry, 2016)