title: [Molecular and crystallographic structure of D-11-aza-19-nortestosterone].
abstract: Crystal and molecular structure of D-11-aza-19-nortestosterone monohydrate C17H25NO2.H2O (a 8,288(2), b 12,433(2), c 7,570(2) A, beta 90,25(1) degrees; space group P2(1), R 8.3%) has been determined by X-ray analysis. Its comparison with the molecular structure of D-19-nortestosterone showed that the decrease in the hormonal activity upon 11-aza-substitution may be due to difference in chemical properties of imino and methylene groups.
authors: A E
authors: AE
authors: Kapul'skiĭ
authors: V I
authors: VI
authors: Simonov
authors: A A
authors: AA
authors: Shishkina
authors: K K
authors: KK
authors: Pivnitskiĭ
mesh_terms: D001378:Azasteroids / Q000032:analysis*; D055598:Chemical Phenomena; D002621:Chemistry; D003461:Crystallography; D008968:Molecular Conformation; D009277:Nandrolone / Q000032:analysis*; D013260:Steroids, Heterocyclic / Q000032:analysis*
chemical_list: D001378:Azasteroids; D013260:Steroids, Heterocyclic; C056242:D-11-aza-19-nortestosterone; D009277:Nandrolone
vernacular_title: Molekuliarnaia i kristallicheskaia struktura D-11-aza-19-nortestosterona.