Quinazolincs and 1,4-benzodiazepines. LXXXVI. The synthesis of imidazothienodiazepines and imidazopyrazolodiazepines
作者:R. Ian Fryer、James V. Earley、Armin Walser
DOI:10.1002/jhet.5570150419
日期:1978.6
The thieno[3,2-e][1,4]diazepin-2-one (1a), the thieno[2,3-e] [ 1,4] diazepin-2-one (1b), the pyrazolo[3,4-e][1,4]diazepin-2-one (1c) and a chloro analog of 1b, compound 1d, were each converted to derivatives of the novel tricyclic ring systems 4H-imidazo[1,5-a]thieno[2,3-f] [1,4]-diazepine, 4Himidazo[1,5a]thieno[2,3f][1,4]diazepine and 4H-imidazo[ 1,5-a]pyrazolo[4,3-f]-[1,4]diazepine. Depending on
噻吩并[3,2- e ] [1,4]二氮杂-2-酮(1a),噻吩并[2,3- e ] [1,4]二氮杂-2-酮(1b),吡唑并[3] ,4- ë ] [1,4]二氮杂-2-酮(1C)和一个氯类似物1b中,化合物1 d,分别转化为新的三环的环系统4的衍生物ħ -咪唑并[1,5-一个] thieno [2,3- f ] [1,4]-二氮杂,4 H咪唑并[1,5 a ] thieno [2,3 f ] [1,4]二氮杂和4 H-咪唑并[1,5-a ] pyrazolo [4,3- f]-[1,4]二氮杂pine。根据咪唑环上所需的取代基,采用了两种不同的合成途径。