Studies on the imidazo[1,2-a]pyridinic system: Synthesis of pyrido[1',2':1,2]imidazo[5,4-d][1.3]-benzodiazepines.
作者:Jean Claude TEULADE、Alain GUEIFFIER、Jean Pirre CHAPAT、Gerard GRASSY、Alain CARPY、A H'NAIFI、Bernard PERLY、Jacques COUQUELET
DOI:10.1248/cpb.37.2293
日期:——
3-Nitroso-2(2-nitrophenyl)imidazo[1, 2-α]pyridine was converted to its diamino derivative (5) and the open-chain compound 2-N(2-pyridyl)benzimidoyl cyanide (6). Compound 5 was condensed with triethyl orthoformate or 2-chlorobenzaldehyde to afford the pyrido[1', 2' : 1, 2]imidazo[5, 4-d][1.3]benzodiazepines (7a, b). X-Ray crystallographic analysis confirmed the structure of 7a. The structure of 7b was assigned by two-dimensional nuclear magnetic resonance techniques, 1H-1H and 13C-1H correlatino spectroscopy.
3-硝基-2(2-硝基苯基)咪唑[1, 2-α]吡啶被转化为其二氨基衍生物(5)和开链化合物2-N(2-吡啶基)苯咪唑腈(6)。化合物5与三乙基正甘醇或2-氯苯甲醛缩合,得到吡啶[1', 2' : 1, 2]咪唑[5, 4-d][1.3]苯并二氮杂平(7a, b)。X射线晶体学分析确认了7a的结构。7b的结构通过二维核磁共振技术,1H-1H和13C-1H相关光谱被确定。