2002
Stereochemical assignment of natural occurring 2,3-epoxy-2-methylbutanoate esters. J. Martín Torres-Valencia, Guadalupe I. León, J. Roberto Villagómez-Ibarra, Oscar R. Suárez-Castillo, Carlos Cerda-García-Rojas, Pedro Joseph-Nathan. DOI: 10.1002/pca.652
Abstract
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.
Synthesis of 6-bromo-2-arylindoles using 2-iodobenzoic acid as precursor
Unimolecular rearrangements of ketene-O,O-acetals and fragmentations occurring in the gas phase
Role of lipid peroxidation in biliary obstruction in the rat
Conformational studies on indole alkaloids from Flustra foliacea by NMR and molecular modeling
Synthesis of Indolylindolines Mediated by tert-BuNH2
Configuration, stereodynamics and crystal structure of 3-substituted-2-oxofuro[2,3-b]indoles
Absolute configuration determination of 2-(2-oxo-3-indolyl)acetamide derivatives
The absoluteconfiguration of cuauhtemone and related compounds