5,6-Dihydro-4<i>H</i>-pyrrolo[1,2-<i>a</i>][1,4]benzodiazepine-4,4-diacetic acid diethyl ester, an useful synthon for the synthesis of new polycyclic nitrogen systems of pharmacological interest
作者:Silvio Massa、Antonello Mai、Roberto Di Santo、Marino Artico
DOI:10.1002/jhet.5570300409
日期:1993.7
This report describes the synthesis of derivatives of two nitrogen tetracyclic ring systems, respectively 9H,11H-pyrimido[4,3-c]pyrrolo[1,2-a][1,4]benzodiazepine and spiro[piperidine-4,4′-[4H]pyrrolo[1,2-a][1,4]-benzodiazepine], by the use of the diethyl ester of 5,6-dihydro-4H-pyrrolo[1,2-a][1,4]benzodiazepine-4,4-diacetic acid as a synthon. This compound was obtained by condensation of 1-(2-amin
该报告描述了两个氮四环系统的衍生物的合成,分别为9 H,11 H-嘧啶[4,3- c ]吡咯并[1,2- a ] [1,4]苯并二氮杂和螺[哌啶-4,通过使用5,6-二氢-4 H-吡咯并[1,2- a ] [的二乙酯] 4'-[4 H ]吡咯并[1,2- a ] [1,4]-苯并二氮杂] 1,4]苯并二氮杂-4,4-二乙酸作为合成子。由1-(2-氨基甲基苯基)-1的缩合获得该化合物ħ-吡咯与1,3-丙酮二羧酸二乙酯在酸性介质中的作用。在金属钠存在下,在沸腾的乙醚中用苯基异氰酸酯处理吡咯并苯并二氮杂卓4,4-二乙酸酯或相关的4-甲基-4-乙酸酯,即可得到嘧啶并吡咯并苯并二氮杂卓衍生物。12,13-dihydro-11,13-dioxo-12-phenyl-9 H,11 H -pyrimido [4,3- c ] pyrrolo [1,2- a ] [1,4]苯并二氮杂,的结构当5,6-二氢-4