title: Synthetic studies of neoclerodane diterpenes from Salvia divinorum: preparation and opioid receptor activity of salvinicin analogues.
abstract: Further modification of salvinorin A (1a), the major active component of Salvia divinorum, has resulted in the synthesis of novel neoclerodane diterpenes with opioid receptor affinity and activity. We report in this study that oxadiazole 11a and salvidivin A (12a), a photooxygenation product of 1a, have been identified as the first neoclerodane diterpenes with kappa antagonist activity. This indicates that additional structural modifications of 1a may lead to analogues with higher potency and utility as drug abuse medications.
authors.affiliation: Division of Medicinal & Natural Products Chemistry, College of Pharmacy, The University of Iowa, Iowa City, Iowa 52242, USA.
authors.forename: Denise S
authors.initials: DS
authors.lastname: Simpson
authors.forename: Peter L
authors.initials: PL
authors.lastname: Katavic
authors.forename: Anthony
authors.initials: A
authors.lastname: Lozama
authors.forename: Wayne W
authors.initials: WW
authors.lastname: Harding
authors.forename: Damon
authors.initials: D
authors.lastname: Parrish
authors.forename: Jeffrey R
authors.initials: JR
authors.lastname: Deschamps
authors.forename: Christina M
authors.initials: CM
authors.lastname: Dersch
authors.forename: John S
authors.initials: JS
authors.lastname: Partilla
authors.forename: Richard B
authors.initials: RB
authors.lastname: Rothman
authors.forename: Hernan
authors.initials: H
authors.lastname: Navarro
authors.forename: Thomas E
authors.initials: TE
authors.lastname: Prisinzano
mesh_terms: D000818:Animals; D016466:CHO Cells; D006224:Cricetinae; D003412:Cricetulus; D018360:Crystallography, X-Ray; D045785:Diterpenes, Clerodane / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D005663:Furans / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D006801:Humans; D015394:Molecular Structure; D011869:Radioligand Assay; D017465:Receptors, Opioid, delta / Q000819:agonists / Q000037:antagonists & inhibitors; D017473:Receptors, Opioid, kappa / Q000819:agonists / Q000037:antagonists & inhibitors*; D017450:Receptors, Opioid, mu / Q000819:agonists / Q000037:antagonists & inhibitors; D027544:Salvia / Q000737:chemistry*; D013237:Stereoisomerism; D013329:Structure-Activity Relationship
chemical_list: D045785:Diterpenes, Clerodane; D005663:Furans; D017465:Receptors, Opioid, delta; D017473:Receptors, Opioid, kappa; D017450:Receptors, Opioid, mu; C509586:salvinicin A; C509587:salvinicin B