title: Complete 1H and 13C NMR assignments of clerodane diterpenoids of Salvia splendens.
abstract: Unambiguous and complete assignments of 1H and 13C NMR chemical shifts for five clerodane diterpenes, four of them isolated from Salvia splendens (salviarin, splendidin and splenolides A and B) and one obtained by acetylation of splenolide A, are presented. The assignments are based on 2D shift-correlated [1H,1H-COSY, 1H,13C-gHSQC-1J(C,H) and 1H,13C-gHMBC-nJ(C,H) (n=2 and 3)] and nuclear Overhauser effect (NOE) experiments. The conformation of the rings of these compounds is supported by the 3J(H,H) values and NOE results.
authors.affiliation: Dipartimento di Chimica Organica E. Paternò, Università degli Studi di Palermo, Parco d'Orleans 2, I 90128 Palermo, Italy.
authors.forename: Gianfranco
authors.initials: G
authors.lastname: Fontana
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Savona
authors.forename: Benjamín
authors.initials: B
authors.lastname: Rodríguez
mesh_terms: D000107:Acetylation; D002247:Carbon Isotopes / Q000032:analysis; D045785:Diterpenes, Clerodane / Q000737:chemistry* / Q000302:isolation & purification; D006859:Hydrogen / Q000032:analysis; D009682:Magnetic Resonance Spectroscopy; D027544:Salvia / Q000737:chemistry*
chemical_list: D002247:Carbon Isotopes; D045785:Diterpenes, Clerodane; D006859:Hydrogen