An expedient synthesis of 7-O-functionalised pyrrolo[2,1-c][1,4]benzodiazepine-5,11-diones
作者:Hadi Madani、Andrew S Thompson、Michael D Threadgill
DOI:10.1016/s0040-4020(02)00940-7
日期:2002.9
An efficient synthetic route to 7-hydroxypyrrolo[2,1-c][1,4]benzodiazepine-5,11-dione, an important potential ligand for the DNA minor groove, has been developed. Simultaneous reduction of nitro and hydrogenolysis of the O-benzyl in N-(5-benzyloxy-2-nitrobenzoyl)-l-proline methyl ester, followed by thermal cyclisation, gave 7-hydroxypyrrolo[2,1-c][1,4]benzodiazepine-5,11-dione. This was alkylated to
已经开发出一种有效的合成途径,可以合成7-羟基吡咯并[2,1- c ] [1,4]苯并二氮杂5,11-二酮,这是DNA小沟的重要潜在配体。同时还原N-(5-苄氧基-2-硝基苯甲酰基)-1-脯氨酸甲酯中的O-苄基进行硝基还原和氢解,然后进行热环化,得到7-羟基吡咯并[ 2,1- c ] [1,4 ]苯并二氮杂5,11-二酮。将其烷基化以得到丙-2-炔基醚。己酸-5-壬酸苄酯与B 10 H 14的反应,并用HBr脱保护,得到4-(1,2-二碳杂十二碳杂硼烷(12)-1-基)丁酸。将该酸与三环苯酚偶联,得到5,11-二氧代-2,3-二氢-1 H-吡咯并[2,1-c ] [1,4]苯并二氮杂-7-基4-(1,2-二碳杂十二烷基(12)-1-基)丁酸酯。