FIELD: medicine, pharmaceutics.SUBSTANCE: present invention refers to aryl- and heteroarylsubstituted diasaspiropyridine derivatives of formula (I) to its pharmaceutically acceptable acid- or base-additive salt wherein A represents a radical of formula (II) wherein each k, l, m, n independently represents an integer equal to 0, 1, 2, 3 or 4, provided (k+1) and (m+n) are equal to 2, 3, 4 or 5； wherein one of -CH2-fragments can be substituted by atom O； and wherein one of -CH2-fragments can be substituted by an oxo group； X represents CH or N； R3 is specified in a group consisting of hydrogen, C1-5alkyl and C3-6cycloalkyl； each R4, R5 is independently specified in a group including hydrogen, halogen, oxo, C1-3alkyl and C1-3alkyloxy； p represents an integer equal to zero, 1, 2 or 3； q represents an integer equal to zero, 1, 2 or 3； each Y1, Y3, is independently specified in a group including a single bond and O； Y2 represents saturated or unsaturated C1-6hydrocarbon radical with a straight chain； B is specified in a group including phenyl optionally substituted by the number of the substitutes R6 each of which is independently specified in halogen； and wherein r represents an integer equal to zero, 1 or 2； alkyl represents a saturated hydrocarbon radical with a straight and branched chain containing said number of carbon atoms； wherein said radical can be optionally substituted by one or more carbon atoms or more radicals specified in a group including halogen, cyano, hydroxy, amino, oxo, carboxyl, nitro, thio and formyl； and halogen represents fluorine, chlorine, bromine or iodine. Also, the invention refers to a pharmaceutical composition based on the compounds of formula I as an active ingredient for preparing a drug for preventing and/or treating mental disorders, including but not limited to anxiety, eating behavior disorder, affective disorders, such as bipolar disorders and depression, psychosis, such as schizophrenia, and sleeping disorders； obesity, diabetes；
