There are described compounds of the formula ##STR1## in which R.sup.1 is hydrogen or C.sub.1-6 alkyl, R.sup.2 is hydrogen, C.sub.1-6 alkyl or C.sub.3-6 alkenyl, X and Y are each oxygen, sulphur, sulphinyl or sulphonyl, n is 2 to 6 and Z is 1H-tetrazol-5-yl, 1H-tetrazol-5-ylthio, 1H-tetrazol-5-ylsulphinyl, 1H-tetrazol-5-ylsulphonyl, cyano or thiocyano, provided that when both X and Y are oxygen Z is 1H-tetrazol-5-ylthio, 1H-tetrazol-5-ylsulphinyl, 1H-tetrazol-5-ylsulphonyl or thiocyano; and salts thereof. The compounds in which Z is other than cyano or thiocyano have pharmaceutical activity and inhibit leukotriene action or formation. '
该文描述了如下化合物的结构式:##STR1## 其中R.sup.1为氢或C.sub.1-6烷基,R.sup.2为氢、C.sub.1-6烷基或C.sub.3-6烯基,X和Y分别为氧、
硫、亚磺酰基或磺酰基,n为2至6,Z为
1H-四唑-5-基、
1H-四唑-5-
硫基、
1H-四唑-5-亚磺酰基、
1H-四唑-5-磺酰基、
氰或
硫氰基,但当X和Y均为氧时,Z为
1H-四唑-5-
硫基、
1H-四唑-5-亚磺酰基、
1H-四唑-5-磺酰基或
硫氰基;以及其盐。其中Z不是
氰或
硫氰基的化合物具有药理活性,可以抑制
白三烯的作用或形成。