Piperidinyl nociceptin receptor compounds

A compound of structural formula (I):

• or salts, hydrates or solvates thereof wherein:
• B is hydrogen;
• R1 and R2 together with the carbon atoms to which they are attached form aryl, substituted aryl, heteroaryl or substituted heteroaryl;
• X is hydrogen, —CH═NOR4, —C(O)NR5R6, alkyl, substituted alkyl, aryl, substituted aryl, arylalkyl, substituted arylalkyl, heteroalkyl, substituted heteroalkyl, heteroaryl, substituted heteroaryl, heteroarylalkyl or substituted heteroarylalkyl;
• Y is hydrogen, —CH═NOR7, —C(O)NR8R9, alkyl, substituted alkyl, aryl, substituted aryl, arylalkyl, substituted arylalkyl, heteroalkyl, substituted heteroalkyl, heteroaryl, substituted heteroaryl, heteroarylalkyl or substituted heteroarylalkyl;
• R4 is hydrogen, alkyl or substituted alkyl;
• R5 is hydrogen, alkyl or substituted alkyl;
• R6 is hydrogen, alkyl, substituted alkyl or —OR15;
• R7 is hydrogen, alkyl or substituted alkyl;
• R8 and R9 are independently hydrogen, alkyl or substituted alkyl;
• and
• L is C4 cycloalkyl, C6 cycloalkyl, C7 cycloalkyl, C8 cycloalkyl, (C3-C8) substituted cycloalkyl, cyclohexyl substituted with
• (C3-C8) cycloheteroalkyl, C3 substituted cycloheteroalkyl, C5 substituted cycloheteroalkyl, C6 substituted cycloheteroalkyl, C7 substituted cycloheteroalkyl, C8 substituted cycloheteroalkyl,