Compounds having high angiogenesis inhibiting activity useful as agents for effective treatment and prevention of diseases involving pathologic angiogenesis, e.g. cancer and cancer metastasis, are of formula (II), where A1 is C—X1 or N; Q1 is -A2=A3-, or a heteroatom selected from —O—, —S—, and —N(R10)—; Q2 is -A4=A5-, or a heteroatom selected from —O—, —S—, and —N(R10)—; provided that Q1 and Q2 are not heteroatoms at the same time; A2 is C—X2 or N, A3 is C—X3 or N, A4 is C—X4 or N, and A5 is C—X5 or N; Y is C2-6alkyl, C3-9cycloalkyl, C2-7alkenyl, C2-7alkynyl, C2-6alkoxy, C2-7alkenyloxy, C2-7alkynyloxy, or C1-6alkylthio; Z is a hydrogen atom, hydroxy, C1-6alkyl, C3-9cycloalkyl, or —NR1R2; and L is selected from the formula: