title: Syntheses and antigestagenic activity of mifepristone derivatives.
abstract: A series of mifepristone derivatives with different "linker groups" in position 4' of the phenyl ring in the 11beta-position of the steroid scaffold (2-41) have been synthesized. Their antigestagenic activites were determined in a cell-based assay (alkali phosphatase assay in T47-D breast cancer cells) and compared with that of the parent compound mifepristone. SAR and QSAR studies reveal the influence of both lipophilicity and partial charge based van der Waals surface area descriptors on biological activity. Within the series of compounds described in this study, three mifepristone derivatives are identified with considerably high antigestagenic activity. These compounds are regarded as useful starting materials for the synthesis of either physiologically stable or cleavable progesterone receptor-binding conjugates for therapeutic or diagnostic purposes.
authors.affiliation: Department of Pharmaceutical Chemistry-Medicinal Chemistry, Institute of Pharmaceutical Sciences, University of Graz, Graz, Austria.
authors.forename: Claudia
authors.initials: C
authors.lastname: Hödl
authors.forename: Katrin
authors.initials: K
authors.lastname: Raunegger
authors.forename: Rainer
authors.initials: R
authors.lastname: Strommer
authors.forename: Gerhard F
authors.initials: GF
authors.lastname: Ecker
authors.forename: Olaf
authors.initials: O
authors.lastname: Kunert
authors.forename: Sonja
authors.initials: S
authors.lastname: Sturm
authors.forename: Christoph
authors.initials: C
authors.lastname: Seger
authors.forename: Ernst
authors.initials: E
authors.lastname: Haslinger
authors.forename: Rudolf
authors.initials: R
authors.lastname: Steiner
authors.forename: Wolfgang S L
authors.initials: WS
authors.lastname: Strauss
authors.forename: Hans-Wolfgang
authors.initials: HW
authors.lastname: Schramm
mesh_terms: D000469:Alkaline Phosphatase / Q000378:metabolism; D001943:Breast Neoplasms; D045744:Cell Line, Tumor; D005260:Female; D006727:Hormone Antagonists / Q000138:chemical synthesis* / Q000494:pharmacology; D006801:Humans; D015735:Mifepristone / Q000031:analogs & derivatives* / Q000138:chemical synthesis* / Q000494:pharmacology; D008958:Models, Molecular; D009376:Neoplasms, Hormone-Dependent; D011980:Receptors, Progesterone / Q000378:metabolism; D012044:Regression Analysis; D013329:Structure-Activity Relationship
chemical_list: D006727:Hormone Antagonists; D011980:Receptors, Progesterone; D015735:Mifepristone; D000469:Alkaline Phosphatase