PROBLEM TO BE SOLVED: To provide safe therapeutic agents for diseases in which B cells or mast cells participate.SOLUTION: The invention provides compounds represented by formula (I). (L is O, S, SO, NH, CO, CH, or the like； R1 is halogen, alkyl or the like, n is an integer from 0 to 4； ring1 is a substituted/unsubstituted 4-7 membered cyclic group； and ring2 is a substituted/unsubstituted 4-7 membered saturated heterocycle.)SELECTED DRAWING: None【課題】安全性に優れた、Ｂ細胞や肥満細胞が関与する疾患の治療剤の提供。【解決手段】式（Ｉ）で示される化合物。（ＬはＯ、Ｓ、ＳＯ、ＮＨ、ＣＯ、ＣＨ２等；Ｒ1はハロゲン、アルキル等、ｎは０～４の整数；ｒｉｎｇ１は置換／非置換の４～７員の環状基；ｒｉｎｇ２は置換／非置換の４～７員の飽和ヘテロ環）【選択図】なし
