Complete assignment of the 1H and 13C NMR spectra of the tetraisoprenylated benzophenone 15-epiclusianone.

Santos, Marcelo Henrique dos; Nagem, Tanus Jorge; Braz Filho, Raimundo; Lula, Ivana Silva; Speziali, Nivaldo Lucio

Complete assignment of the 1H and 13C NMR spectra of the tetraisoprenylated benzophenone 15-epiclusianone.

Date

2001

Authors

Santos, Marcelo Henrique dos

Nagem, Tanus Jorge

Braz Filho, Raimundo

Lula, Ivana Silva

Speziali, Nivaldo Lucio

Abstract

An NMR study of 15-epiclusianone, 1-benzoyl-6-hydroxy-14,14-dimethyl-3,5,15-tri(3-methyl-2-butenyl)- bicyclo[3.3.1]non-1-ene-4,6-dione (1), a novel tetraisoprenylated benzophenone isolated from pericarp of fruits of Rheedia gardneriana, is described. In addition to conventional 1D NMR techniques, 2D shiftcorrelated NMR experiments [1H 1H-COSY, 1H 13C-HMQC-1J(C,H), 1H 13C-HMBC-nJ(C,H) (n = 2 and 3) and 1H 1H-NOESY] were used for 1H and 13C chemical shift assignments of this natural product. The 1D 13C NMR spectrum of 1 in the solid state was also obtained.

Citation

SANTOS, M. H. dos et al. Complete assignment of the 1H and 13C NMR spectra of the tetraisoprenylated benzophenone 15-epiclusianone. Magnetic Resonance in Chemistry, Chichester, v. 39, n.3, p. 155-159, 2001. Disponível em: <http://onlinelibrary.wiley.com/doi/10.1002/mrc.795/full>. Acesso em: 20 mai. 2017.