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ID: ALA1130675
Journal: Bioorg Med Chem Lett
Title: Ligands for the estrogen receptor, containing cyclopentadienyltricarbonylrhenium units.
Authors: Spradau TW, Katzenellenbogen JA.
Abstract: As model systems for estrogens labeled with technetium-99m that might be used as in vivo imaging agents for estrogen receptor (ER)-positive breast tumors, we have prepared and determined the ER binding affinity of a series of nonsteroidal and steroidal estrogens substituted with a cyclopentadienyltricarbonylrhenium unit. While this organometallic unit interfered with ER binding when it was tethered close to the ligand, those analogs in which it was attached through a 17 alpha-ethynyl link (provided that the link was not polar) showed high ER affinity.
CiteXplore: 9873709