The present invention relates to a pyrazole derivative represented by formula (I) or (II) ##STR1## wherein R.sup.1 is hydrogen C2-C6 alkyl benzyl or phenyl; each of R.sup.2 and R.sup.3 is hydrogen, C1-C6 alkyl or benzyl; each of R.sup.4 and R.sup.5 is hydrogen, C1-C6 alkyl, C3-C6 alkenyl, C3-C8 cycloalkyl, benzyl or phenyl; X is oxygen or sulfur; R.sup.5 is hydrogen, C2-C6 alkyl, C3-C6 alkenyl, C3-C8 cycloalkyl or benzyl when R.sup.1 is benzyl, R.sup.2 is ethyl, R.sup.3 is hydrogen, and R.sup.4 is hydrogen, and its pharmaceutical use.
                            本发明涉及一种由式(I)或(II)所表示的
吡唑衍
生物##STR1##其中R.sup.1是氢、C2-C6烷基苄基或苯基;R.sup.2和R.sup.3中的每一个是氢、C1-C6烷基或苄基;R.sup.4和R.sup.5中的每一个是氢、C1-C6烷基、C3-C6烯基、C3-C8环烷基、苄基或苯基;X是氧或
硫;当R.sup.1是苄基,R.sup.2是乙基,R.sup.3是氢,R.sup.4是氢时,R.sup.5是氢、C2-C6烷基、C3-C6烯基、C3-C8环烷基或苄基;以及其在药物上的应用。