Ein neues Kämpferolacylglycosid aus Phyllitis scolopendrium / A New Acylated Kaempferol Glycoside from Phyllitis scolopendrium

Abstract

From methanolic extracts of fresh aerial parts of Phyllitis scolopendrium (L.) Newm. a new flavonoid, kaemp­ ferol 3-O-β-{(4-O-caffeyl-3-O-β-glucosyl)-glucoside}-7-O-rhamnoside, was isolated and the structure determined by means of spectroscopic methods including 13C-NMR, and enzymatic hydrolysis.

Bioactive Saponins from Swartzia schomburgkii from the Suriname Rainforest

“…These data, in addition to the observation of a sodiated molecular ion [M + + Na] at m / z 819 in FABMS indicated that 4 is hederagenin glycosylated at C-3 with two glucose units. The linkage between the two glucose units was determined to be 1→3 by comparison of the 13 C NMR chemical shifts of the glucose carbons with those of related compounds having the same linkage. , Acetylation of 4 gave an octaacetate, and the 1 H NMR spectrum of the glycoside part of this compound in CD 3 OD was assigned by a combination of a COSY experiment and comparison with the spectrum of acetylated glucose. The COSY spectrum showed that the chemical shift of H-3‘ of the inner glucose, which was at about δ 3.6 before acetylation, only moved slightly to δ 4.00 (t, J = 9.5 Hz) after acetylation.…”

The Flavonoids

“…( 1977) Ishikura and Sato (1977) Flavone Yamasaki et al (1977) 3{. '-AretyI)"~"" '7-} Geiger et al (1978) et al (1981) rhamnosyl-(I-+ 6)galactoside 1 leaf; Rhamnaceae 3-(4" -Catreoyl)laminaribioside-Phyllitis scolopendrium Kar! et al (1980) (1980) Harborne (1975) Nawwar et al (1977b) Star et al (1975) Harborne and King (1976) Chauhan et al (1979b) Higuchi and Donnelly (1978) Bacon et al (1978) UJubelen et al (1980b) AJ-Khubaizi et al (1977) UJubeJen et al (1979) Bacon et al (1978) UJubeJen et al (1979) Sarin et al (1976) UJubeJen et al (1979) Krasnovand AJekseyuk (J 979) Ismail et al (1979) Fujiwara et al ( ) Rizk et al (1976 Hiller et al (1979) Wilkins and Bohm (1976) Takagi et al (1976a) Bykov and Glyzin (1977) Ornduff et al (1973) Dubey and Gupta (1978) Soltis (1980) Markharn and Given (1979) Glennie and Jain (1980) Buttery and Buzzell (1975) Vancraenenbroeck et al…”