Unsaturated diterpenoids with a novel carbocyclic skeleton from Salvia xalapensis.
Two diterpenoids with an unprecedented carbocyclic skeleton, salvixalapadiene (3) and isosalvixalapadiene (4), have been obtained from the leaves of Salvia xalapensis. The rearranged skeleton of these products may be derived biogenetically from a salvigenane precursor. In addition, two new rearranged diterpenoids (1 and 2) belonging to already known skeletons were isolated. The structures of the new compounds (1-4) were elucidated on the basis of spectroscopic data interpretation.
Esquivel
Baldomero
B
Instituto de Química de la Universidad Nacional Autónoma de México, Circuito Exterior de Ciudad Universitaria, Coyoacan 04510, México D.F., México. baldo@servidor.unam.mx
Tello
Rodolfo
R
Sánchez
Ana Adela
AA
D004224:Diterpenes / Q000737:chemistry* / Q000302:isolation & purification*; D008800:Mexico; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D018515:Plant Leaves / Q000737:chemistry; D027544:Salvia / Q000737:chemistry*
D004224:Diterpenes