Artículos de revistas
Absolute configuration assignment of an unusual homoisoflavanone from Polygonum ferrugineum using a combination of chiroptical methods
Fecha
2015-10Registro en:
Batista Jr., João Marcos; Wang, Bo; Castelli, Maria Victoria; Blanch, Ewan W.; López, Silvia Noelí; Absolute configuration assignment of an unusual homoisoflavanone from Polygonum ferrugineum using a combination of chiroptical methods; Elsevier; Tetrahedron Letters; 56; 44; 10-2015; 6142-6144
0040-4039
Autor
Batista Jr., João Marcos
Wang, Bo
Castelli, Maria Victoria
Blanch, Ewan W.
López, Silvia Noelí
Resumen
The absolute configuration of the homoisoflavanone 5,7-dihydroxy-6-methoxy-3-(9-hydroxy-phenylmethyl)-chroman-4-one (1), found in Polygonum species, has been determined as 3R,9R by using a combination of electronic and vibrational chiroptical spectroscopic methods. The experimental spectra were interpreted with the aid of density functional theory calculations. The risks of relying upon a single method for stereochemical characterization of natural products are discussed.