2011
Morales-Ríos Martha S., López-Camacho Perla Y., Jacobo-Cabral Carlos O., Pérez-Rojas Nadia A., Trujillo-Serrato Joel J., Burgueño-Tapia Eleuterio, Súarez-Castillo Oscar R., Joseph-Nathan Pedro. Unimolecular rearrangements of ketene-O,O-acetals and fragmentations occurring in the gas phase.J. Mass. Spectrom. 46, 489495 (2011). DOI 10.1002/jms.1915.
Abstract
Gas phase skeletal rearrangements of regioisomeric 3-cyano-2-methoxy-3a-alkylfuro[2,3-b]- and [3,2-b]indoles were evidenced by product ions [M ? 32]+, consistent with loss of methanol, on electron ionization in their mass spectra. The rearranged products occurring in gas phase were demonstrated to have elemental composition and fragmentation properties identical to those of authentic samples of 2-indolyl cyanomalonates. Isotopic labeling experiments support the formation mechanism of the [M ? 32]+ ion. Additional thermal gas-phase reaction products were characterized by comparison with an authentic sample.
Trapping enols of esters and lactones with diazomethane
First Total Synthesis of ()-Flustraminol B
Cleavage of alkoxycarbonyl protecting groups from carbamates by t-BuNH2
Total Syntheses of Five Indole Alkaloids from the Marine Bryozoan Flustra foliacea
One-potsynthesis of conformationallyrestrictedspirooxindoles
Synthesis of Bromoindole Alkaloids from Laurencia brongniartii
Role of lipid peroxidation in biliary obstruction in the rat