Diterpenoids from Calceolaria inamoena

Juan A Garbarino; María Cristina Chamy; Marisa Piovano; Luis Espinoza; Eliana Belmonte

doi:10.1016/j.phytochem.2004.02.003

Diterpenoids from Calceolaria inamoena

Phytochemistry. 2004 Apr;65(7):903-8. doi: 10.1016/j.phytochem.2004.02.003.

Authors

Juan A Garbarino¹, María Cristina Chamy, Marisa Piovano, Luis Espinoza, Eliana Belmonte

Affiliation

¹ Departamento de Química, Universidad Técnica Federico Santa María, Casilla 110-V, Valparaíso, Chile. juan.garbarino@usm.cl

PMID: 15081292
DOI: 10.1016/j.phytochem.2004.02.003

Abstract

Four 9-epi-ent-labdanes were isolated from the aerial parts of Calceolaria inamoena. Their structures, 2beta-hydroxy-9-epi-ent-labda8(17)-13(E)dien-15-oic acid, 2beta-hydroxy-9-epi-ent-labda8(17)-13(Z)dien-15-oic acid, 2beta-hydroxy-9-epi-ent-labda8(17)-13(E)dien-15-al and 2beta-hydroxy-9-epi-ent-labda-8(17)-13(Z)dien-15-al, were established by spectroscopic methods including by analysis of 2 dimensional heteronuclear correlation experiments 1H/13C (normal and long range), and NOE and gs-sel-1D-NOESY and TOCSY of their methyl ester or acetyl derivatives.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Diterpenes / chemistry*
Diterpenes / isolation & purification
Molecular Conformation
Molecular Structure
Nuclear Magnetic Resonance, Biomolecular
Plant Components, Aerial / chemistry
Scrophulariaceae / chemistry*

Substances

Diterpenes