Ring constrained analogues of the orvinols: The furanomorphides

Ring constrained analogues of the orvinols: The furanomorphides Structural Determinants of Opioid and NOP Receptor Activity in Derivatives of Buprenorphine Syntheses of novel high affinity ligands for opioid receptors In-vitro investigation of oxazol and urea analogues of morphinan at opioid receptors Fumaroylamino-4,5-epoxymorphinans and Related Opioids with Irreversible μ Opioid Receptor Antagonist Effects Nitrogen-bridged conformationally constrained etorphine analogs. Synthesis and biological evaluation High-affinity carbamate analogues of morphinan at opioid receptors Phenylmorphans and analogs: opioid receptor subtype selectivity and effect of conformation on activity 14-Amino, 14-Alkylamino, and 14-Acylamino Analogs of Oxymorphindole. Differential Effects on Opioid Receptor Binding and Functional Profiles Synthesis and κ-Opioid Receptor Activity of Furan-Substituted Salvinorin A Analogues