The invention relates to a DGAT inhibitor of formula (I): including any stereochemically isomeric form thereof, wherein A represents CH or N; the dotted line represents an optional bond in case A represents a carbon atom; X represents —C(═O)—; —O—C(═O)—; C(═O)—C(═O)—; —NRx—C(═O)—; —Z1—C(O)—; —Z1—NRx—C(═O)—; —C(═O)—Z1—; —NRx—C(═O)—Z1—; —S(═O)p-; —C(═S)—; —NRx—C(═S)—; —Z1—C(═S)—; —Z1—NRx—C(═S)—; —C(═S)—Z1-; —NRx—C(═S)—Z—; Y represents NRx—C(=0)-Z2—; —NRx—C(=0)-Z2—NRy—; —NRx—C(=0)-Z2—NRy—C(=0)-; —NRx—C(=0)-Z2—NRy—C(=0)-O—; —NRx—C(=0)-Z2-0-; —NRx—C(=0)-Z2-0-C(=0)-; —NRx—C(=0)-Z2—C(=0)-; —NRx—C(=0)-Z2—C(=0)-; —NRx—C(=0)-0-Z2—C(=0)-; —NRx—C(=0)-0-Z2—C(=0)-0-; —NRx—C(═O)—O—Z2—O—C(═O)—; —NRx—C(═O)—Z2—C(═O)—NRy—; —NRx—C(═O)—Z2—NRy—C(=0)-NRy—; —C(═O)—Z2—; —C(═O)—Z2—O—; —C(=0)-NRx—Z2—; —C(=0)-NRx—Z2-0-; —C(=0)-NRx—Z2—C(=0)-0-; —C(=0)-NRx—Z2-0-C(=0)-; —C(=0)-NRx—Z2—NRy—; —C(=0)-NRx—Z2—NRy—C(=0)-; —C(=0)-NRx—Z2—NRy—C(=0)-0-; R1 represents C1-12alkyl optionally substituted with cyano, C1-4alkyloxy, C1-4alkyl-oxyC1-4alkyloxy, C3-6Cycloalkyl or aryl; C2-6alkenyl; C2-6alkynyl; C3-6cycloalkyl; adamantanyl; aryl1; aryl1C1-6alkyl; Het1; or Het1C1-6alkyl; provided that when Y represents —NRX—C(═O)—Z2—; —NRx—C(=0)-Z2—NRy; —NRX—C(═O)—Z2—C(═O)—NRy—; —C(═O)—Z2—; —NRx—C(=0)-Z2—NRy—C(=0)-NRy—; —C(═O)—NRX—Z2—; —C(═O)—NRX—O—Z2—; or —C(=0)-NRx—Z2—NRy—; then R1 may also represent hydrogen; R2 represents hydrogen, C1-12alkyl, C2-6alkenyl or R3; provided that if X represents —O—C(═O)—; the R2 represents R3; and provided that (A) is excluded; a N-oxide thereof, a pharmaceutically acceptable salt thereof or a solvate thereof. The invention further relates to methods for preparing such compounds, pharmaceutical compositions comprising said compounds as well as the use as a medicine of said compounds.