1-Acyl-2-pyrazoline derivatives represented by the formula ##STR1## where R.sup.1 denotes a hydrogen atom, pyridyl group, pyrazinyl group, alkyl group, aryl group, or alkoxy group; and R.sup.2, R.sup.3, and R.sup.4 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 ##STR2## where R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are defined as above, to produce compounds having useful anti-cerebral edema activity.
1-酰基-2-
吡唑啉衍
生物由以下式表示##STR1##其中R.sup.1表示氢原子、
吡啶基、
吡嗪基、烷基、芳基或烷氧基;R.sup.2、R.sup.3和R.sup.4独立地表示氢原子、
呋喃基、
吡啶基、烷基或芳基;通过加热表示为以下式的酰基腙衍
生物进行环化合成,其中R.sup.1、R.sup.2、R.sup.3和R.sup.4如上定义,以产生具有有用的抗脑
水肿活性的化合物。