Pyrazole derivatives of the following formula (I), having affinity for the cannabinoidergic CB1 and/or CB2 receptors: wherein: R is a group selected from C1-C10 alkyl; aryl, arylalkyl or arylalkenyl, not substituted or having from one to four substituents, equal to or different from each other; A is a group selected from the following: an ether group of formula —(CH2)—O—(CH2)v—R″ wherein v is equal to 1 or 2; R″ is as defined in the present application; a ketone group of formula —C(O)—Z′, wherein Z′ is as defined in the present application; a substituent having an hydroxyl function of formula —CH(OH)—Z′, being as defined in the present application; an amide substituent of formula —C(O)—NH-T′, T′ being as defined in the present application; B is a group as defined in the present application; D is an heteroaryl optionally substituted.