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Synthetic approaches to naturally occurring ten-membered-ring lactones
(Georg Thieme Verlag Kg, 2007-11-02)
The strategies for the synthesis of naturally occurring ten-mernbered-ring lactones, which are the most abundant of the medium-ring lactones, are discussed. According to their structures and/or biosynthesis, the molecules ...
Dehydrocostus lactone et 8 α-hydroxydehydrocostus lactone de Centaurea chilensis Hook et Arn.
(Cêntre d'Etude des Plantes Médicinales, 1984)
Two sesquiterpene lactones have been isolated from the stems, leaves and flowers of Centaurea chilensis Hook. et Arn.: dehydrocostus lactone and 8 α-hydroxydehydrocostus lactone, and two steroids: β-sitosterol and stigmasterol. ...
Synthesis of novel O-acylated-D-ribono-1,5-lactones and structural assignment supported by conventional NOESY-NMR and x-ray analysis
(Sociedade Brasileira de Química, 2008)
A practical method for the structural assignment of 3,4-O-benzylidene-D-ribono-1,5-lactones and analogues using conventional NMR techniques and NOESY measurements in solution is described. 2-O-Acyl-3,4-O-benzylidene-D-ri ...
Absolute configuration and antimicrobial activity of acylhomoserine lactones
(Amer Chemical SocWashingtonEUA, 2008)
Mode of action on Trypanosoma ad Leishmania spp
(Springer, 2018)
This book addresses chemical and biological aspects related to sesquiterpene lactones (STLs). Experts in different fields have been invited to contribute on this class of compound´s chemistry, isolation and identification, ...
A short approach to trisubstituted gamma-butyrolactones
(Pergamon-elsevier Science LtdOxfordInglaterra, 2006)
Natural occurrence, biological activities and synthesis of eight-, nine-, and eleven-membered ring lactones
(Sociedade Brasileira de Química, 2008)
The natural occurrence, biological activities and synthetic approaches to natural eight-, nine-, and eleven-membered lactones is reviewed. These medium ring lactones are grouped according to ring size, and their syntheses ...
Improvement of the antibacterial activity of sesquiterpene lactones
(Laboratorios Mixim S.A., 2008-10)
Thirty six sesquiterpene lactones of the guaianolide and germacranolide-type from species of the Tribes Heliantheae and Vernonieae (Asteraceae) were evaluated for their antibacterial action. Thirty of them exhibited selective ...
Novel sesquiterpene lactones from Eremanthus seidelii
(PERGAMON-ELSEVIER SCIENCE LTDOXFORD, 2012)
Two novel sesquiterpene lactones were isolated from crude extract of the Eremanthus seidelii leaves. Reliable structural elucidations to these lactones were established by 1D and 2D NMR spectroscopic techniques and ...