Chroman derivatives

A compound represented by Formula I

• wherein:
• -A-B— is —CH2—CH2—, —CH═CH—, —CH2—O—, or —CH2—S—;
• n is 0;
• R1 is C1-4 alkyl;
• R2 is C1-4 alkyl;
• R3 is
• cycloalkyl, aryl, or saturated, partially unsaturated or unsaturated heterocyclyl, all rings optionally substituted with one or more substituents selected from alkyl, haloalkyl, hydroxy, alkoxy, halogen, oxo, cyano, nitro, amino, —SO2NR2, and —C(O)OR, with the proviso that the heterocyclyl is not substituted or unsubstituted 4,5-dihydro-isoxazol-3-yl or substituted or unsubstituted chroman;
• or
• haloalkenyl;
• R4 is hydrogen, optionally substituted C1-4 alkyl, C2-12 alkenyl, hydroxyalkyl, acyl, glucoside, phosphoryl, phosphoryloxyalkyl, carboxyalkylcarbonyl, aminoalkylcarbonyl, or alkylketocarbonyl;
• R5 and R6 are independently of each other C1-6 alkyl, C2-12 alkenyl, or halogen;
• and
• R is hydrogen or C1-4 alkyl;
• or
• single stereoisomers, mixtures of stereoisomers, or pharmaceutically acceptable salts thereof.