Abstract: A compound represented by the general formula (C): (wherein R101 represents a substituted or unsubstituted aromatic heterocyclic group, R102, R103, R104 and R105 may be the same or different, and each represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 3 carbon atoms, or a haloalkyl group having 1 to 3 carbon atoms, and R106 represents a hydrogen atom, or a saturated or unsaturated hydrocarbon group which is a straight or branched chain having 1 to 12 carbon atoms, but excluded is the case where R101 is a 3-furyl group, R102, R103, R104 and R105 are all methyl groups, and R106 is a methyl group, a 4-methyl-3-pentenyl group or a 4,8-dimethyl-3,7-nonadienyl group); or a pharmaceutically acceptable salt thereof has selective inhibitory activity on hypoxic cell growth in a broad range of the concentration and therefore is useful as an active ingredient of a medicament for cancer prevention or treatment.

Abstract: A compound represented by the general formula (M): (wherein R1 represents a substituted or unsubstituted aromatic heterocyclic group, R2 represents a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 3 carbon atoms, OR3, N(R3)2, C(?O)OR3 or C(?O)N(R3)2, R3 represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or an acyl group having 1 to 4 carbon atoms, R4 represents a hydrogen atom, an oxygen atom or OR5, and R5 represents a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, or an acyl group having 1 to 3 carbon atoms); or a pharmaceutically acceptable salt thereof is a cortistatin A analog which is useful as an active ingredient of medicaments for cancer prevention or treatment in that the analog can be mass-produced by chemical synthesis due to its simple chemical structure and retains the same biological activities as those of cortistatin A.

Abstract: A compound represented by the general formula (M): (wherein R1 represents a substituted or unsubstituted aromatic heterocyclic group, R2 represents a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 3 carbon atoms, OR3, N(R3)2, C(?O)OR3 or C(?O)N(R3)2, R3 represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or an acyl group having 1 to 4 carbon atoms, R4 represents a hydrogen atom, an oxygen atom or OR5, and R5 represents a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, or an acyl group having 1 to 3 carbon atoms); or a pharmaceutically acceptable salt thereof is a cortistatin A analog which is useful as an active ingredient of medicaments for cancer prevention or treatment in that the analog can be mass-produced by chemical synthesis due to its simple chemical structure and retains the same biological activities as those of cortistatin A.

Abstract: A compound represented by the general formula (C): (wherein R101 represents a substituted or unsubstituted aromatic heterocyclic group, R102, R103, R104 and R105 may be the same or different, and each represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 3 carbon atoms, or a haloalkyl group having 1 to 3 carbon atoms, and R106 represents a hydrogen atom, or a saturated or unsaturated hydrocarbon group which is a straight or branched chain having 1 to 12 carbon atoms, but excluded is the case where R101 is a 3-furyl group, R102, R103, R104 and R105 are all methyl groups, and R106 is a methyl group, a 4-methyl-3-pentenyl group or a 4,8-dimethyl-3,7-nonadienyl group); or a pharmaceutically acceptable salt thereof has selective inhibitory activity on hypoxic cell growth in a broad range of the concentration and therefore is useful as an active ingredient of a medicament for cancer prevention or treatment.