The present invention concerns the use of compounds for preventing and/or treating osteoporosis, for stimulating bone formation, for stimulating bone remodeling, for stimulating the differentiation and mineralization of osteoblasts, for inhibiting bone resorption and for modulating serum level of adiponectin in a subject. These uses have been found for compounds represented by Formula I and pharmaceutically acceptable salts thereof. wherein A is C5 alkyl, C6 alkyl, C5 alkenyl, C6 alkenyl, C(O)-(CH2)n-CH3 or CH(OH)-(CH2)n-CH3 wherein n is 3 or 4; R1 is H, F or OH; R2 is H, F, OH, C6 alkyl, C5 alkenyl, C6 alkenyl, C(O)-(CH2)n-CH3 or CH(OH)-(CH2)n-CH3 wherein n is 3 or 4; R3 is H, F, OH or CH2Ph; R4 is H, F, or OH; Q is 1) (CH2)mC(O)OH wherein m is 1 or 2, 2) CH(F)-C(O)OH, 3) CF2-C(O)OH or 4) C(O)-C(O)OH.