A compound of the general formula ##STR1## or a salt or complex thereof, in which X, Y and Z are all optionally substituted carbon atoms and R is hydrogen, optionally substituted hydrocarbyl or acyl or --COOR.sup.7 and R.sup.7 is hydrocarbyl has anti-microbial properties. Particular examples are compounds in which X is --CH.sub.2 -- or --C(CH.sub.3).sub.2 -- and Y and Z are both --CH.sub.2 -- or X is is --CH.sub.2 -- and Y and Z are carbon atoms of a benzene ring. The zinc complexes have useful properties.
通用公式##STR1##的化合物或其盐或络合物,其中X、Y和Z均为可选择取代的碳原子,R为氢、可选择取代的烃基或酰基或--COOR.sup.7,R.sup.7为烃基具有抗微
生物特性。具体示例是X为--CH.sub.2--或--C(CH.sub.3).sub.2--,Y和Z均为--CH.sub.2--或X为--CH.sub.2--,Y和Z为苯环的碳原子。
锌络合物具有有用的性质。