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  • Title: Synthesis of 2-fluoro-11-hydroxy-N-propylnoraporphine: a potential dopamine D2 agonist.
    Author: Zhang A, Csutoras C, Zong R, Neumeyer JL.
    Journal: Org Lett; 2005 Jul 21; 7(15):3239-42. PubMed ID: 16018630.
    Abstract:
    [structure: see text]. 2-Fluoro-11-hydroxy-N-propylnoraporphine 4 (2-F-11-OH-NPa) was synthesized from thebaine in 13 steps with an overall yield of 1.35%. The key steps included the Pd-catalyzed 3-dehydroxylation of 14-hydroxymorphine, S(N)2 substitution of Ts(-) by F(-), and CH(3)SO(2)OH-promoted rearrangement of the substituted morphinandiene. The dopamine binding affinity of this compound was also investigated on rat brain membranes, and as expected, this compound displayed high affinity and selectivity at the D(2) receptor.
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