FIELD: chemistry.
SUBSTANCE: invention relates to novel chromane derivatives of formula I: 
or their pharmaceutically acceptable salts, where: m equals 0 or 1; p equals 2; q equals 2; Ar is phenyl which is possibly substituted with a halogen atom; each R1 is independently a halogen; R2 is 
; n equals 1 or 2; each of R3 and R4 is independently hydrogen or C1-12-alkyl; each of R5 and R6 is independently hydrogen or C1-12-alkyl; and each of R7 and R8 is independently hydrogen or C1-12-alkyl; or one of R7 and R8 is hydrogen and the other is a 5- or 6-member heterocyclyl containing one nitrogen atom, or R7 and R8 together with the nitrogen atom with which they are bonded can form an amidinyl group, a urea group, a guanidinyl group or a pyrrolidine ring which is possibly substituted with an amine group.
EFFECT: obtaining novel chromane derivatives and pharmaceutical compositions having 5-HT6 and/or 5-HT2a receptor modulator activity.
22 cl, 11 ex, 1 tbl
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