title: Diterpenoid alkaloids from Delphinium gracile.
abstract: Two highly oxygenated hetisine-type diterpenoid alkaloids, delphigraciline (1), 14-hydroxyhetisinone N-oxide (2), and the norditerpenoid alkaloid 8-methoxykarakoline (3), were isolated from a neutral extract of Delphinium gracile. Their structures were elucidated on the basis of spectroscopic data and by comparison with previously reported spectroscopic data of similar alkaloids. Their antiparasitic and insecticidal activities are also discussed.
authors.affiliation: Instituto de Productos Naturales y Agrobiología, CSIC, Avda. Astrofísico F. Sánchez 3, 38206 La Laguna, Tenerife, Spain. mreina@ipna.csic.es
authors.forename: M
authors.initials: M
authors.lastname: Reina
authors.forename: R
authors.initials: R
authors.lastname: Mancha
authors.forename: A
authors.initials: A
authors.lastname: Gonzalez-Coloma
authors.forename: M
authors.initials: M
authors.lastname: Bailen
authors.forename: M L
authors.initials: ML
authors.lastname: Rodriguez
authors.forename: R A
authors.initials: RA
authors.lastname: Martinez-Diaz
mesh_terms: D000470:Alkaloids / Q000737:chemistry*; D003497:Cyclic N-Oxides / Q000737:chemistry*; D031882:Delphinium / Q000737:chemistry*; D004224:Diterpenes / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure
chemical_list: C525196:14-hydroxyhetisinone N-oxide; C525197:8-methoxykarakoline; D000470:Alkaloids; D003497:Cyclic N-Oxides; D004224:Diterpenes; C525195:delphigraciline