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Synthesis of salvinorin A analogues as opioid receptor probes
Kevin Tidgewell1, Wayne W Harding, Anthony Lozama
1Division of Medicinal & Natural Products Chemistry, College of Pharmacy, The University of Iowa, Iowa City, Iowa 52242, USA.
Abstract:
Several neoclerodanes, such as salvinorin A (1) and herkinorin (3), have recently been shown to possess opioid receptor activity in vitro and in vivo. To explore the structure-affinity relationships of this interesting class of compounds, we have synthesized a series of analogues from 1 isolated from Salvia divinorum. Here, we report the semisynthesis of neoclerodane diterpenes and their structure-affinity relationships at opioid receptors. This work will allow the further development of novel opioid receptor ligands.
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