Synthesis and Anticonvulsant Activity of Novel 1-Substituted-1,2-dihydro-pyridazine-3,6-diones
作者:Ramaiah Sivakumar、Navaneetharaman Anbalagan、Vedachalam Gunasekaran、Joseph Thomas Leonard
DOI:10.1248/bpb.26.1407
日期:——
The synthesis and pharmacological evaluation of novel 1-substituted-1,2-dihydro-pyridazine-3,6-diones (4a—l, 5a—j) as potential anticonvulsant agents are described. The compounds were tested in vivo for the anticonvulsant activity. The compound which have maximum protection against MES induced seizures is 1-[3-(2-aminophenylamino)-2-hydroxypropyl)-1,2-dihydro-pyridazine-3,6-dione 4h (ED50=44.7 mg · kg−1 i.p.) 1-[2-hydroxy-3-piperazin1-yl-propyl)-1,2-dihydro-pyridazine-3,6-dione 4c (ED50=72 mg · kg−1 i.p.) and 1-[2-hydroxy-3-imidazol-1-yl-propyl)-1,2-dihydro-pyridazine-3,6-dione 4d (ED50=79 mg · kg−1 i.p.) were also found to have maximum protection against MES induced seizures. Whereas all these compounds failed to protect the animals from subcutaneous pentylenetetrazole (Metrozol) seizure threshold test (sc-Met).
描述了作为潜在抗惊厥剂的新型 1-取代-1,2-二氢-哒嗪-3,6-二酮 (4a-l, 5a-j) 的合成和药理学评价。在体内测试了这些化合物的抗惊厥活性。对 MES 引起的癫痫发作具有最大保护作用的化合物是 1-[3-(2-氨基苯氨基)-2-羟丙基)-1,2-二氢-哒嗪-3,6-二酮 4h (ED50=44.7 mg·kg−1 i.p.) 1-[2-羟基-3-哌嗪1-基-丙基)-1,2-二氢-哒嗪-3,6-二酮 4c (ED50=72 mg·kg−1 i.p.) 和 1-[2-羟基-3-咪唑-1-基-丙基)-1,2-二氢-哒嗪-3,6-二酮 4d (ED50=79 mg·kg−1 i.p.) 也被发现对 MES 诱发的癫痫发作具有最大程度的保护作用。然而所有这些化合物均未能保护动物免受皮下戊四唑(Metrozol)癫痫阈值测试(sc-Met)的影响。