| abstract |
The present invention provides an antibiotic agent that can exhibit high antibiotic action and can be used for various uses such as pharmaceuticals. In an antibiotic containing at least one antibiotic selected from penicillin, tetracycline, and chloramphenicol antibiotics as an active ingredient, prenyl having a structure represented by the following general formula (1) A cinnamic acid derivative is used in combination. (In the formula, R 1 represents hydrogen or a dimethylallyl group. R 2 represents hydrogen, a dimethylallyl group, or —OR 3 group. R 3 represents hydrogen or a dimethylallyl group. R 1 at least one of to R 3 is a dimethylallyl group.) [Selection figure] None |