A New Lignan Glycoside and Phenylethanoid Glycosides from Strobilanthes cusia BREMEK

New phenolic compounds from Meehania urticifolia

“…The 13 C-NMR spectrum of 1 showed 14 oxygenated carbon signals of sugar moieties and three anomeric carbon signals at d 103.9, 104.7, and 106.9. The presence of a glucose, a xylose, and a 3,4,6-substituted glucose moiety of a phenylethanoid glycoside [16,17,28] were confirmed by the carbon signals and their corresponding protons. Further analysis showed that the sugars were D-glucose and D-xylose [29].…”

“…H-5 00 protons were long-range coupled with the anomeric carbon at d 106.9, so it was assigned to C-1 00 in the D-xylose. Proton signals at d 3.67 (overlapped, H-6 0 ) and 3.95 (1H, dd, J = 11.5, 1.5, H-6 0 ) of the 3,4,6-substituted glucose moiety were shifted downfield relative to those of connandoroside B [16,28] and correlated with the C-1 000 anomeric carbon signal at d 104.7 in the HMBC spectrum. The C-1 000 carbon has a proton at d 4.32 (1H, d, J = 7.5 Hz) confirmed by the HMQC spectrum.…”

“…Further analysis showed that the sugars were D-glucose and D-xylose [29]. Oxygenated proton signals at d 3.07 (1H, dd, J = 11.0, 10.0 Hz, H-5 00 ) and 3.62 (overlapped, H-5 00 ) and the corresponding carbon signal at d 67.3 were assigned to C-5 protons and carbon in the D-xylose [16,28]. H-5 00 protons were long-range coupled with the anomeric carbon at d 106.9, so it was assigned to C-1 00 in the D-xylose.…”

“…They were flavones (4-15), phenylethanoid glycosides (1,(16)(17)(18), phenolic glucosides (2, 19-22, 28, 29), etc. (Fig.…”

Two New Alkaloids from the Roots of <i>Baphicacanthus cusia</i>

“…3) Till now indigoid indole alkaloids, quinazolinone alkaloids, monoterpenes, triterpenes, flavonoids, sterols, anthraquinones, benzoxazinones and lignans have been reported from Baphicacanthus cusia. 4) Since diversified components in Chinese herbal medicines often act via multiple modes to create a synergistic effect, 5) this paper deals with the elucidation of various chemical constituents in NBLG based on systematic isolation and purification, in order to provide chemical basis for the multiple-targeting effect of NBLG.…”