A compound represented by the following general formula (I) (R
1
and R
2
represent hydrogen atom, an alkyl group, a halogen atom, etc.; R
3
and R
4
represent hydrogen atom, an alkyl group, an alkoxy group, or an alkenyl group; R
5
represents hydrogen atom, an alkyl group, or nitro group, and R
6
represents hydrogen atom or an alkyl group), which acts on the transcription process of genes.