PROBLEM TO BE SOLVED: To provide a DNA synthase inhibitor, an antiinflammatory agent, and an antiallergic agent comprising a specific compound.SOLUTION: The present invention provides a DNA synthase inhibitor, an antiinflammatory agent, and an antiallergic agent comprising a compound represented by the following formula (1), or its pharmacologically acceptable salt, or an alcohol soluble component of an azuki bean cooking liquid comprising the compound represented by the following formula (1), where R1 is an alkyl group substituted with a 5 membered or 6 membered heterocyclic group and having 1 or more and 12 or less carbon atoms.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】特定の化合物を含有するDNA合成酵素阻害剤、抗炎症剤、及び抗アレルギー剤を提供する。【解決手段】下記式(1)で表される化合物、又はその薬学的に許容し得る塩;或いは、下記式(1)で表される化合物を含有する小豆煮汁のアルコール可溶成分;を含有する、DNA合成酵素阻害剤、抗炎症剤、及び抗アレルギー剤。下記式中、R1は、5員又は6員の複素環基で置換された炭素原子数1以上12以下のアルキル基を示す。【化1】【選択図】図1