Heterocyclic compounds and use thereof in medicine and in cosmetics

A heterocyclic compound of formula (I), or an enantiomer thereof, or a pharmaceutically acceptable salt thereof,

• wherein,
• Y is —CH2, —C(O), —C(CH3)2, or a spirocyclopropyl;
• R1 is
• R2, R3, and R6, which may be identical or different, are a hydrogen atom, F, or —CH3;
• R4 is a hydrogen atom, an alkyl, an alkene, an alkyne, a cycloalkyl, a cycloalkene, an aralkyl, a heteroaralkyl, or one of the following:
• R5 is a halogen;
• an alkyl;
• a cycloalkyl optionally substituted with R13, R14, and/or R15;
• an alkene;
• a cycloalkene;
• an alkyne;
• an ether;
• or one of the following:
• with Het representing 1 to 3 nitrogen atoms among the 6 atoms of the aromatic ring, and these nitrogen atoms may, independently of one another, be substituted with an oxygen atom to form an N-oxide group;
• R7 is
• with n=0 or 1;
• R8 and R9, which may be identical or different, are a hydrogen atom, F, or —CH3;
• R10 is hydrogen atom, —OR11, —SR11, —NR11R12, —S(O)R11, —SO2R11, —OC(O)R11, —CO2R11, a halogen, —NO2, —CN, —C(O)NR11R12, —CF3, or —OCF3;
• R11 and R12, which may be identical or different, are a hydrogen atom, a C1-C6 alkyl, CF3, or an ether;
• R13, R14, and R15, which may be identical or different, are a hydrogen atom, a C1-C6 alkyl, a cycloalkyl, —OR16, —NR16R17, a halogen, —OCF3, —CF3, —CN, —CO2R16, —CONR16R17, —NO2, —OCH2OR16, —SR16, —S(O)R16, —SO2R16, or an ether;
• A, B, and D, which may be identical or different, are a C, N, O, or S atom;
• R16 and R17, which may be identical or different, are a hydrogen atom, a C1-C6 alkyl, or —C(O)R18;
• Z is —CH2, O, or —NR18;
• and
• R18 is a hydrogen atom or a C1-C3 alkyl.