- Stereochemical assignment of naturally occurring 2,3-epoxy-2-methylbutanoate esters.
Stereochemical assignment of naturally occurring 2,3-epoxy-2-methylbutanoate esters.
Phytochemical analysis : PCA (2002-12-24)
J Martín Torres-Valencia, Guadalupe I León, J Roberto Villagómez-Ibarra, Oscar R Suárez-Castillo, Carlos M Cerda-García-Rojas, Pedro Joseph-Nathan
PMID12494750
RESUMEN
A method to determine the absolute configuration of 2,3-epoxy-2-methylbutanoate ester residues in natural products is presented, based on (i) the reduction of the ester function to yield a 2-methyl-1,2-butanediol, (ii) esterification of the obtained primary alcohol with either (R)-(+)- or (S)-(-)-Mosher's acid to afford the corresponding Mosher's ester, and (iii) 1H-NMR spectral comparison of the final product with that of the Mosher's esters prepared from 2-methyl-1,2-butanediols of known stereochemistry.
MATERIALES
Referencia del producto
Marca
Descripción del producto
Número de referencia del producto (SKU)
Tamaño de envase
Disponibilidad
Precio
Cantidad
Número de referencia del producto (SKU)
Tamaño de envase
Disponibilidad
Precio
Cantidad