PYRAN DERIVATIVES, METHOD FOR PREPARING AND USING THEM IN PERFUMERY AND FOR AROMATISATION Russian patent published in 2012 - IPC C07D309/04 C07D309/08 C07D309/18 C11B9/00 

FIELD: medicine, pharmaceutics.

SUBSTANCE: invention refers to new pyran derivatives of general formula (I), wherein Y represents a 5-, 6- or 7-member ring, preferentially a 5- member ring, methyl- or ethyl- mono- or polysubstituted and optionally unsaturated; R1, R2, R3, R4 represent (each independently) a hydrogen atom or a linear or branched C_1-5-alkyl group; X is present or absent when X is present, all R5, R6, R7, R8, R9 are present, while X is a hydrogen atom or the group OZ wherein Z is a hydrogen atom or the group R10 or the group C(O)R10; when X is absent, there is a double bond at a carbon atom in the 4th position, and R7, R8 and R9, and one of R5 or R6 are present (if R6 is present, then R5 is absent, and conversely), or one of R5, R6 and R7, and one of R8 or R9 are present (if R8 is present, then R9 is absent, and conversely), or R7 represent a group =C(R11)(R12), and R5, R6, R8, R9 are present; each of the groups R5-R12, when present, independently represent a hydrogen atom or a linear or branched C_1-5-alkyl or C_2-5-alkenyl group. The invention also relates to method for making these compounds, a pharmaceutical composition and using at least one pyran of formula (I) as a perfuming agent.

EFFECT: preparing new pyran derivatives.

14 dwg, 1 tbl, 4 ex