TY - JOUR A1 - Riad, Noura M. A1 - Zlotos, Darius P. A1 - Holzgrabe, Ulrike T1 - Crystal structure of 5,11-dihydropyrido[2,3-b][1,4]benzodiazepin-6-one. JF - Acta Crystallographica Section E Crystallographic Communications N2 - The title compound, C\(_{12}\)H\(_{9}\)N\(_{3}\)O, is an inter­mediate in the synthesis of the muscarinic M2 receptor antagonist AFDX-384. The seven-membered ring adopts a boat conformation and the dihedral angle between the planes of the aromatic rings is 41.51 (9)°. In the crystal, mol­ecules are linked into [001] chains of alternating inversion dimers formed by pairs of N-H・・・O hydrogen bonds and pairs of N-H・・・N hydrogen bonds. In both cases, R\(_{2}\)\(^{2}\)(8) loops are generated. KW - crystal structure KW - pyridobenzodiazepine KW - boat conformation KW - hydrogen bonding Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-149627 VL - E71 ER -