Organic compounds

A compound of formula

• 9
• wherein R1 signifies H, halogen, OH, C1-C6-alkyl, C1-C6-alkoxy, phenoxy, C1-C6-alkyl-carbonyloxy, C1-C6-alkoxycarbonyloxy or α-L-oleandrosyl-α-L-oleandrosyloxy;
• R2 signifies C1-C6-alkyl, C2-C6-alkenyl, C2-C6-alkinyl, C1-C6-alkoxy-C1-C6-alkyl, C1-C6-alkythio-C1-C6-alkyl, C3-C7-cycloalkyl, C3-C7-cycloalkeny or a 3- to 7-membered heterocyclic ring;
• R3 signifies methyl or ethyl;
• either R4 signifies H and R5 signifies OH, C1-C6-alkoxy, tri(C1-C6-alkyl)silyloxy, C1-C6-alkylcarbonyloxy or C1-C6-alkoxycarbonyloxy;
• or R4 and R5 together signify O, NH or NOR7;
• R6 signifies C1-C6-alkyl, C1-C6-haloalkyl, C3-C8-cycloalkyl, C3-C8-halocycloalkyl, C1-C6-alkyl-C3-C8-cycloalkyl or unsubstituted or mono- to penta-substituted phenyl or unsubstituted or mono- to penta-substituted benzyl, wherein the substituents are respectively selected from the group consisting essentially of halogen, NO2, C1-C6-alkyl, C1-C6-haloalkyl, C1-C6-alkoxy, C1-C6-haloalkoxy and CN;
• R7 signifies H, C1-C6-alkyl or benzyl;
• X—Y signifies CH2CH2, CH2CH(OH), CH═CH, CH2C(═O) or CH(OH)CH2;
• Z signifies O or S;
• and n signifies 1, 2, 3, 4 or 5.