Potentiating effects of N1,N3-diallyluracil, N1,N3-diallylthymine and N1,N3-diallyl-6-methyluracil on pentobarbital-induced sleep and diazepam-induced motor incoordination.
作者:YUJI TATEOKA、TOSHIYUKI KIMURA、KAZUHITO WATANABE、IKUO YAMAMOTO、ING KANG HO
DOI:10.1248/cpb.35.4928
日期:——
N-Allyl derivatives of uracil (U), thymine (T) and 6-methyluracil (6-MU) were prepared, and their pharmacological activities (hypnotic activity and anticonvulsant activity against pentylenetetrazol (PTZ) -induced seizures) and interactions with three sedative-hypnotics [pentobarbital (PB), barbital (B) and diazepam (DZ)] were investigated in mice. N1, N3-Diallyluracil (DAU) alone exhibited hypnotic and anticonvulsant activities. None of the other allyl derivatives showed both pharmacological activities. As regards interactions, most of the compounds tested prolonged PB-induced sleep at either 80 or 160 mg/kg, i.p. Further, U, T, and 6-MU (160 mg/kg, i.p.) also prolonged the PB-induced sleeping time. DAU showed a prolonging effect on PB-induced sleep when given by intracerebroventricular (i.c.v.) injection. DAU, N1, N3-diallylthymine (DAT) and N1-monoallyluracil (N1-MAU) significantly prolonged the B-induced sleeping time at a dose of 160 mg/kg, i.p. Further, DAU and DAT (40 mg/kg, i.p.) enhanced DZ-induced motor incoordination. These results indicate that U and related compounds possess central nervous system (CNS) - depressant effects and DAU is the most potent among the N-allyl derivatives tested.
制备了尿嘧啶(U)、胸腺嘧啶(T)和6-甲基尿嘧啶(6-MU)的N-烯丙基衍生物,及其药理活性(对戊四氮(PTZ)引起的癫痫发作的催眠活性和抗惊厥活性)以及与三种镇静剂的相互作用- 在小鼠身上研究了安眠药[戊巴比妥(PB)、巴比妥(B)和地西泮(DZ)]。 N1、N3-二烯丙基尿嘧啶(DAU)单独表现出催眠和抗惊厥活性。其他烯丙基衍生物均未表现出这两种药理活性。至于相互作用,大多数化合物在 80 或 160 mg/kg(腹膜内注射)下测试了 PB 诱导的睡眠延长。此外,U、T 和 6-MU(160 mg/kg,腹腔注射)也延长了 PB 诱导的睡眠时间。当通过脑室内 (i.c.v.) 注射时,DAU 对 PB 诱导的睡眠有延长作用。 DAU、N1、N3-二烯丙基胸腺嘧啶 (DAT) 和 N1-单烯丙基尿嘧啶 (N1-MAU) 在腹腔注射 160 mg/kg 的剂量下显着延长 B 诱导的睡眠时间。此外,DAU 和 DAT(40 mg/kg,腹腔注射)增强了 DZ 引起的运动不协调。这些结果表明 U 和相关化合物具有中枢神经系统 (CNS) 抑制作用,并且 DAU 是测试的 N-烯丙基衍生物中最有效的。