Abstract: A novel compound having HDAC2 inhibitory activity is provided. A compound represented by Formula (I): wherein the group represented by Formula: is a group represented by Formula: or the like, wherein R3 is each independently amino or the like, and n is an integer of 0 to 4, X1 is N or the like, X2 is N or the like, R4 and R5 are each independently a hydrogen atom or the like, R1 is substituted with Substituent group C or unsubstituted non-aromatic carbocyclyl or the like, Substituent group C is halogen or the like, and R2 is a hydrogen atom, or a pharmaceutically acceptable salt thereof.

Abstract: The present invention provides a process for preparing a compound of the formula (II): wherein R2 is unsubstituted alkyl, characterized by reacting a compound of the formula (I): wherein R1 is hydrogen or a protecting group other than unsubstituted alkyl, with a compound of the formula: R2—OH, wherein R2 is as defined above, in the presence of a sodium salt and/or a magnesium salt.

Abstract: The present invention provides a process for preparing a compound of the formula (II): wherein R2 is unsubstituted alkyl, characterized by reacting a compound of the formula (I): wherein R1 is hydrogen or a protecting group other than unsubstituted alkyl, with a compound of the formula: R2—OH, wherein R2 is as defined above, in the presence of a sodium salt and/or a magnesium salt.

Abstract: The present invention provides a process for preparing a compound of the formula (II): wherein R2 is unsubstituted alkyl, characterized by reacting a compound of the formula (I): wherein R1 is hydrogen or a protecting group other than unsubstituted alkyl, with a compound of the formula: R2—OH, wherein R2 is as defined above, in the presence of a sodium salt and/or a magnesium salt.

Abstract: The present invention provides a compound having antiviral effects, particularly having growth inhibitory activity on influenza viruses, a preferred example of the compound being a substituted 3-hydroxy-4-pyridone derivative prodrug having cap-dependent endonuclease inhibitory activity.

Abstract: The present invention provides a compound having antiviral effects, particularly having growth inhibitory activity on influenza viruses, a preferred example of the compound being a substituted 3-hydroxy-4-pyridone derivative prodrug having cap-dependent endonuclease inhibitory activity.

Abstract: The present invention provides a compound having antiviral effects, particularly having growth inhibitory activity on influenza viruses, a preferred example of the compound being a substituted 3-hydroxy-4-pyridone derivative prodrug having cap-dependent endonuclease inhibitory activity.

Abstract: The present invention provides a compound having antiviral effects, particularly having growth inhibitory activity on influenza viruses, a preferred example of the compound being a substituted 3-hydroxy-4-pyridone derivative prodrug having cap-dependent endonuclease inhibitory activity.

Abstract: The present invention provides a compound having antiviral effects, particularly having growth inhibitory activity on influenza viruses, a preferred example of the compound being a substituted 3-hydroxy-4-pyridone derivative prodrug having cap-dependent endonuclease inhibitory activity.

Abstract: The present invention provides a compound having antiviral effects, particularly having growth inhibitory activity on influenza viruses, a preferred example of the compound being a substituted 3-hydroxy-4-pyridone derivative prodrug having cap-dependent endonuclease inhibitory activity.

Abstract: The present invention provides a compound having antiviral effects, particularly having growth inhibitory activity on influenza viruses, a preferred example of the compound being a substituted 3-hydroxy-4-pyridone derivative prodrug having cap-dependent endonuclease inhibitory activity.

Abstract: The invention relates to acrylamide compounds of Formula I mentioned below. The invention is also directed to the use compounds of Formula I to treat or prevent a disorder responsive to the blockade of calcium channels, and particularly N-type calcium channels. Compounds of the present invention are especially useful for treating pain.

Abstract: The present invention provides a compound having antiviral effects, particularly having growth inhibitory activity on influenza viruses, a preferred example of the compound being a substituted 3-hydroxy-4-pyridone derivative prodrug having cap-dependent endonuclease inhibitory activity.

Abstract: The invention relates to acrylamide compounds of Formula I mentioned below. The invention is also directed to the use compounds of Formula I to treat or prevent a disorder responsive to the blockade of calcium channels, and particularly N-type calcium channels. Compounds of the present invention are especially useful for treating pain.