FIELD: medicine, pharmaceutics.
SUBSTANCE: present invention refers to a compound of formula
wherein R1, R2 and X are those as specified in cl.1 of the patent claim, or its pharmaceutically acceptable salt, as well as using such compound or its pharmaceutically acceptable salt for preparing a drug preparation for prevention and treatment of all types of sleeping, eating or drinking disorders.
EFFECT: preparing the new azetidine compounds showing activity of orexin receptor antagonists.
12 cl, 112 ex, 1 tbl
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