Buscar
Mostrando ítems 1-10 de 64
STRUCTURAL ELUCIDATION OF BIOACTIVE PRINCIPLES IN FLORAL EXTRACTS OF GERMAN CHAMOMILLE (MATRICARIA RECUTITA L.)
(Sociedad Chilena de Química, 2011)
Gas-phase polar [4(+)+2] cycloaddition of cationic 2-azabutadienes with enol ethers
(Elsevier Science BvAmsterdamHolanda, 2001)
Structural elucidation of bioactive principles in floral extracts of german chamomille (matricaria recutita L.)
(Sociedad Chilena de Quimica, 2011)
In this work, bioactive compounds present in flower heads of German Chamomille, were extracted and isolated in pure forms by chromatographic techniques. These compounds, spiroketal enol ethers, present in both isomeric ...
pi-Strain-induced electrophilicity in small cycloalkynes: A DFT analysis of the polar cycloaddition of cyclopentyne towards enol ethers
(WILEY-V C H VERLAG GMBH, 2006-01-16)
Small cycloalkynes possess a pi-strain-induced electrophilicity related to the bending of the C-SP3-C-SP-C-SP bond angle. For cyclopentyne and benzyne, the electrophilicity index defined in the context of density functional ...
π-strain-induced electrophilicity in small cycloalkynes: A DFT analysis of the polar cycloaddition of cyclopentyne towards enol ethers
(2006)
Small cycloalkynes possess a π-strain-induced electrophilicity related to the bending of the Csp3-Csp-Csp bond angle. For cyclopentyne and benzyne, the electrophilicity index defined in the context of density functional ...
Addition of silylated carbon nucleophiles to iminium and cyclic N-acyliminium ions promoted by InCl3
(Pergamon-elsevier Science LtdOxfordInglaterra, 2000)
Synthesis and expansion of bicyclic enol ether: a probable precursor for the synthesis of macrolide (±)-pyrenophorin
(Sociedade Brasileira de Química, 2018)
A convenient procedure for the synthesis and expansion of bicyclic rings has been developed for the production of probable precursors of non-racemic pyrenophorin, an antibiotic dilactone. The major highlight for this new ...