C. Simon et al., MORPHINE ALKALOIDS .141. SYNTHESIS AND OPIOID BINDING-PROPERTIES OF NEW BETA-FUNALTREXAMINE (BETA-FNA) ANALOGS, Medicinal chemistry research, 7(4), 1997, pp. 251-258
Several 6 beta-chloroacetamido- and 6 beta-monomethylfumaramido-4,5 al
pha-epoxy-7,8-didehydro-morphinans and their analogues with saturated
ring C were prepared and their binding affinities to mu, delta and kap
pa opioid receptors determined. Subtype specifity has also been evalua
ted by the aid of labeled selective ligands.