Synthesis of novel 4-amino-1,4-benzodiazepine-2,5-diones for anticonvulsant testing
作者:Terence T. Tita、Milton J. Kornet
DOI:10.1002/jhet.5570240221
日期:1987.3
A series of novel 4-amino-1,4-benzodiazepine-2,5-diones was synthesized via two pathways. The first method involved reductive alkylation of unsymmetrical hydrazines with glyoxylic acid, followed by Fisher esterification. The resulting N-aminoglycinate ethyl ester was subsequently o-nitrobenzoylated, reduced, and thermally cyclized to obtain 4-dialkylaminobenzodiazepinones. In the second method methylhydrazine
通过两种途径合成了一系列新颖的4-氨基-1,4-苯并二氮杂-2,5-二酮。第一种方法涉及用乙醛酸将不对称肼还原烷基化,然后进行费希尔酯化。随后将所得的N-氨基甘氨酸酯乙酯进行邻硝基苯甲酰化,还原并热环化以获得4-二烷基氨基苯并二氮杂pin酮。在第二种方法中甲基肼在N个乙酰化α然后在N个苯甲酰β得到1,2-二酰基肼。用溴乙酸乙酯烷基化并还原硝基,然后热环化,得到4-乙酰氨基苯并二氮杂ze酮。在小鼠的MES癫痫发作和sc Met癫痫发作阈值测试中对所有标题化合物的抗惊厥活性进行了评估,而在旋翼车测试中对神经毒性进行了评估。活性和毒性均最小。