1-Acyl-2-pyrazoline derivatives represented by the formula
where R¹ denotes a hydrogen atom, pyridyl group, pyrazinyl group, alkyl group, aryl group, or alkoxy group; and R², R³, and R⁴ independently denote a hydrogen atom, furyl group, pyridyl group, alkyl group, or aryl group, are produced by cyclizing by heating an acylhydrazone derivative represented by the formula
where R¹, R², R³, and R⁴ are defined as above, to produce compounds having useful anti-cerebral edema activity.
1-酰基-2-
吡唑啉衍
生物,由式表示
式中 R¹表示氢原子、
吡啶基、
吡嗪基、烷基、芳基或烷氧基;R²、R³和R⁴独立地表示氢原子、糠基、
吡啶基、烷基或芳基,通过加热环化由式表示的酰基腙衍
生物而制得。
其中 R¹、R²、R³ 和 R⁴ 的定义同上,从而制得具有有效抗脑
水肿活性的化合物。