19140-90-0Relevant academic research and scientific papers
IRIDOID GLUCOSIDES FROM ROGERIA ADENOPHYLLA
Potterat, Olivier,Saadou, Mahamane,Hostettmann, Kurt
, p. 889 - 892 (1991)
Three new harpagide derivatives have been isolated from the aerial parts of Rogeria adenophylla (Pedaliaceae).Their structures have been established as 8-O-cis-cinnamoylharpagide, 8-O-cis-cinnamoyl-6-O-β-D-glucosyl-harpagide and 6'-O-p-coumaroyl harpagide respectively, the p-coumaroyl moiety of the latter existing in either the trans or cis configuration.In addition, harpagide, harpagoside, 8-O-trans-p-coumaroylharpagide, procumbide and verbascoside have been isolated and identified.
Chemistry and Stereochemistry of Iridoids, V. - Crystal and Molecular Structure of Hexaacetylleonuride - Stereochemical Correlations of Some Iridoid Glucosides
Weinges, Klaus,Zourari, Maria,Smuda, Hubert,Rodewald, Hans,Nixdorf, Matthias,Irngartinger, Hermann
, p. 1063 - 1081 (2007/10/02)
Leonuride (ajugol, 1a) and myoporoside (2) are C-6 epimers, the configurations of which are specified differently in the literature.By X-ray structure analysis of hexaacetylleonuride (1d) the absolute configuration of leonuride (1a) is fixed, to which the configurations of catalpol (3a), antirrhinoside (6a), and harpagide (7a) as well as procumbide (14a) and 6-epi-harpagide (15a) are linked by chemical correlation.
