摘要:
The present invention relates to a therapeutic or prophylactic method for treating Parkinson's disease by administering an effective amount of a compound having a phosphodiesterase 10 inhibitory activity; and also relates to a pharmaceutical composition for treatment or prophylaxis of Parkinson's disease comprising as an active ingredient a compound having a phosphodiesterase 10 inhibitory activity. Moreover, the present invention relates to a method for enhancing dopamine signal in the brain, which comprises administering an effective amount of a compound having a phosphodiesterase 10 inhibitory activity; and also relates to pharmaceutical composition for enhancing dopamine signal in brain comprising as an active ingredient a compound having a phosphodiesterase 10 inhibitory activity.
摘要:
Disclosed is a pyridazinone compound represented by the formula (I): ##STR1## wherein X represents hydrogen atom or the like; Y represents a single bonding arm, oxygen atom or sulfur atom; A represents a straight or branched alkylene group which may have a double bond; B represents carbonyl group or thiocarbonyl group; and R.sup.2 represents an alkyl group having 1 to 10 carbon atoms which may be substituted or the like; or B represents sulfonyl group; and R.sup.2 represents a lower alkenyl group or the like; R.sup.1 represents hydrogen atom or the like; R.sup.3 represents hydrogen atom or the like; R.sup.4 represents hydrogen atom or the like; and R.sup.5 represents hydrogen atom or the like, or a pharmaceutically acceptable salt thereof.
摘要:
Disclosed is a pyridazinone compound represented by the formula (I): ##STR1## wherein X represents hydrogen atom or the like; Y represents a single bonding arm, oxygen atom or sulfur atom; A represents a straight or branched alkylene group which may have a double bond; B represents carbonyl group or thiocarbonyl group; and R.sup.2 represents an alkyl group having 1 to 10 carbon atoms which may be substituted or the like; or B represents sulfonyl group; and R.sup.2 represents a lower alkenyl group or the like; R.sup.1 represents hydrogen atom or the like; R.sup.3 represents hydrogen atom or the like; R.sup.4 represents hydrogen atom or the like; and R.sup.5 represents hydrogen atom or the like, or a pharmaceutically acceptable salt thereof.