Abstract: A peptide derivative selected from a list of peptide derivatives with a sequence derived from human serum albumin fragment EPI-X4 is provided, which binds to CXCR4 with about 1000-fold stronger efficiency than EPI-X4. The peptide derivatives comprise length variants as well as modifications by length variants, D-amino acids, coupling of fatty acids, cholesterol or polymers, acetyl substitutions of amino groups, amination of carboxyl groups. Further provided are pharmaceutical compositions of the peptide derivative.

Abstract: Derivatives of celecoxib that lack cyclooxygenase inhibitory activity but have improved PDE5 inhibitory activity are provided along with pharmaceutical compositions containing them for the treatment or prevention of cancer. Such compounds are expected to have reduced toxicity compared with celecoxib and other cyclooxygenase inhibitors, and greater efficacy compared with conventional PDE5 inhibitors. Derivatives of celecoxib are also suitable for treating chronic inflammatory conditions, erectile dysfunction, pulmonary hypertension, congestive heart failure, and enhancement of cognitive function.

Abstract: Certain 2-halophenyl, 2,4-dihalophenyl (e.g. 2,4-dichlorophenyl), 3,4-dichlorophenyl (e.g. 3,4-dichlorophenyl), 2,6-dichlorophenyl (2,6-dichlorophenyl) and 2,5-diakoxyphenyl (e.g. 2,5-dimethoxyphenyl) derivatives of tetrahydro-?-carbolines are provided, along with their pharmaceutically acceptable salts; prodrugs and solvates, and compositions containing the compounds. The compounds are useful for the prevention and treatment of cancer, and other indications where PDE5 inhibitors have shown benefits including erectile dysfunction, pulmonary hypertension, enhancing cognitive function, cystic fibrosis, or enhancing the activity of conventional chemotherapeutic drugs. Methods for fabricating the compounds are also provided.

Abstract: Derivatives of celecoxib that lack cyclooxygenase inhibitory activity but have improved PDE5 inhibitory activity are provided along with pharmaceutical compositions containing them for the treatment or prevention of cancer. Such compounds are expected to have reduced toxicity compared with celecoxib and other cyclooxygenase inhibitors, and greater efficacy compared with conventional PDE5 inhibitors. Derivatives of celecoxib are also suitable for treating chronic inflammatory conditions, erectile dysfunction, pulmonary hypertension, congestive heart failure, and enhancement of cognitive function.

Abstract: Certain 2-halophenyl, 2,4-dihalophenyl (e.g. 2,4-dichlorophenyl), 3,4-dichlorophenyl (e.g. 3,4-dichlorophenyl), 2,6-dichlorophenyl (2,6-dichlorophenyl) and 2,5-diakoxyphenyl (e.g. 2,5-dimethoxyphenyl) derivatives of tetrahydro-?-carbolines are provided, along with their pharmaceutically acceptable salts; prodrugs and solvates, and compositions containing the compounds. The compounds are useful for the prevention and treatment of cancer, and other indications where PDE5 inhibitors have shown benefits including erectile dysfunction, pulmonary hypertension, enhancing cognitive function, cystic fibrosis, or enhancing the activity of conventional chemotherapeutic drugs. Methods for fabricating the compounds are also provided.