A compound of the following general formula: in the form of one of the enantiomers thereof or a mixture of the enantiomers thereof such as a racemic mixture, or a pharmaceutically acceptable salt and/or solvate thereof, wherein: - represents a single bond or a double bond, - n represents an integer between 1 and 10, - R 1 represents an optionally substituted heteroaryl selected from optionally substituted triazoles and oxadiazoles, - R 2 represents OH, - R 3 represents H, OR 25, CHOHCH 2 OH, CHO, N 3, NR 26 R 27, CO 2 R 28, CONR 29 R 30, NR 38 COR 39, (O(CH 2) m O(CH 2) p) r (CH 2) q R 31, (NR 32 (CH 2) w NR 33 (CH 2) x) y (CH 2) z R 34, ONR 84 R 85, optionally substituted aryl or optionally substituted heteroaryl, - R 4 is absent when represents a double bond and R 4 represents H or OH when represents a single bond, - R 25 to R 30, R 32, R 33, R 38 and R 39 represent, independently of each other, H or a (C 1 -C 6)alkyl, aryl, aryl-(C 1 -C 6)alkyl or (C 1 -C 6)alkyl-aryl group, said group being optionally substituted by one or more groups selected from (C 1 -C 6)alkyl, OR 35 and NR 36 R 37, or - R 26 and R 27, or R 29 and R 30, together form, with the nitrogen atom which bears them, an optionally substituted nitrogen-containing heterocycle, - R 31 and R 34 represent, independently of each other, H, OR 35, NR 36 R 37 or a (C 1 -C 6)alkyl, aryl, aryl-(C 1 -C 6)alkyl, ONR 86 R 87 or (C 1 -C 6)alkyl-aryl group, said group being optionally substituted by one or more groups selected from (C 1 -C 6)alkyl, OR 35 and NR 36 R 37, - R 35 to R 37 and R 84 to R 87 represent, independently of each other, H or a (C 1 -C 6)alkyl, aryl or aryl-(C 1 -C 6)alkyl group, - Ra represents a halogen atom (for example Br or Cl), CN or a (C 1 -C 6)alkoxy group (such as methoxy), - Rb represents H or a (C 1 -C 6)alkoxy group (such as methoxy), or - Ra and Rb together form an -OCH 2 O- chain, and - m, p, r, q, w, x, y, z represent, independently of each other, an integer between 1 and 4, - represents a single bond or a double bond, - n represents an integer between 1 and 10, - R 1 represents an optionally substituted heteroaryl selected from optionally substituted triazoles and oxadiazoles, - R 2 represents OH, - R 3 represents H, OR 25, CHOHCH 2 OH, CHO, N 3, NR 26 R 27, CO 2 R 28, CONR 29 R 30, NR 38 COR 39, (O(CH 2) m O(CH 2) p) r (CH 2) q R 31, (NR 32 (CH 2) w NR 33 (CH 2) x) y (CH 2) z R 34, ONR 84 R 85, optionally substituted aryl or optionally substituted heteroaryl, - R 4 is absent when represents a double bond and R 4 represents H or OH when represents a single bond, - R 25 to R 30, R 32, R 33, R 38 and R 39 represent, independently of each other, H or a (C 1 -C 6)alkyl, aryl, aryl-(C 1 -C 6)alkyl or (C 1 -C 6)alkyl-aryl group, said group being optionally substituted by one or more groups selected from (C 1 -C 6)alkyl, OR 35 and NR 36 R 37, or - R 26 and R 27, or R 29 and R 30, together form, with the nitrogen atom which bears them, an optionally substituted nitrogen-containing heterocycle, - R 31 and R 34 represent, independently of each other, H, OR 35, NR 36 R 37 or a (C 1 -C 6)alkyl, aryl, aryl-(C 1 -C 6)alkyl, ONR 86 R 87 or (C 1 -C 6)alkyl-aryl group, said group being optionally substituted by one or more groups selected from (C 1 -C 6)alkyl, OR 35 and NR 36 R 37, - R 35 to R 37 and R 84 to R 87 represent, independently of each other, H or a (C 1 -C 6)alkyl, aryl or aryl-(C 1 -C 6)alkyl group, - Ra represents a halogen atom (for example Br or Cl), CN or a (C 1 -C 6)alkoxy group (such as methoxy), - Rb represents H or a (C 1 -C 6)alkoxy group (such as methoxy), or - Ra and Rb together form an -OCH 2 O- chain, and - m, p, r, q, w, x, y, z represent, independently of each other, an integer between 1 and 4,