78053-02-8Relevant academic research and scientific papers
IRIDOID GLYCOSIDES OF Verbascum laxum
Agababyan, E. Yu.,Arutyunyan, L. S.,Mnatsakanyan, V. A.
, p. 75 - 79 (1987)
The epigeal part of Verbascum laxum Filar. et Jav. has yielded in addition to the known sinuatol, a new iridoid glycoside - 6-O-(3''-O-p-coumaroyl-α-L-rhamnopyranosyl)aucubin (I), D20 -174.2 +/- 0.7 deg (c 1.4; MeOH).From the roots of the plant, as the main components giving an iridoid reaction, have been isolated harpagoside and the new iridoid glycoside 6-O-(2'',3''-di-O-acyl-α-L-rhamnopyranosyl)aucubin (V) D16 -130 +/- 2 deg (c 0.5; MeOH).The structures of the substances isolated were established with the aid of UV, IR, NMR, and mass spectra.
Iridoide aus Verbascum nigrum L.
Seifert, Karlheinz,Schoepp, Emanuel,Johne Siegfried,Hesse, Manfred
, p. 1678 - 1684 (2007/10/02)
Two new iridoid glycosides, nigroside 1 (= 6-O-(3-O-cinnamoyl-α-L-rhamnopyranosyl)aucubin (2) and, nigroside 2 (= 6-O-(2-O-cinnamoyl-α-L-rhamnopyranosyl)aucubin (3), and the known compound laterioside (1) have been isolated from extracts of the stems of Verbascum nigrum L., and their structures established primarily on the basis of NMR spectroscpoy.Harpagoside (4), a known iridoid glucoside was also isolated from the roots of this plant.
