title: Activity on the CNS of crude extracts and of some diterpenoids isolated from Euphorbia calyptrata suspended cultures.
abstract: Crude methanolic extracts from both root and cell cultures of Euphorbia calyptrata were investigated and found to be active on the CNS. An active fraction was isolated from the methanolic extract of suspension cultures; this possesses significant depressant activity on the CNS. When compared with the crude methanolic root extract, this fraction showed the presence of some common products, four of which were isolated and characterized as helioscopinolides A, C, D, and E. The pure products, administered intraperitoneally to mice, showed different activities on the CNS. Helioscopinolide C showed a clear depressant activity, helioscopinolide E a mild, short depressant effect, while helioscopinolides A and D had an opposite excitatory effect.
authors.affiliation: Institute of Pharmacology, University of Bologna, Italy.
authors.forename: E
authors.initials: E
authors.lastname: Speroni
authors.forename: B
authors.initials: B
authors.lastname: Coletti
authors.forename: A
authors.initials: A
authors.lastname: Minghetti
authors.forename: N C
authors.initials: NC
authors.lastname: Perellino
authors.forename: A
authors.initials: A
authors.lastname: Guicciardi
authors.forename: F F
authors.initials: FF
authors.lastname: Vincieri
mesh_terms: D000818:Animals; D002478:Cells, Cultured; D002490:Central Nervous System / Q000187:drug effects*; D004224:Diterpenes / Q000302:isolation & purification / Q000494:pharmacology*; D051379:Mice; D010936:Plant Extracts / Q000494:pharmacology*
chemical_list: D004224:Diterpenes; D010936:Plant Extracts