This page lists works of an author who doesn't have a ResearchGate profile or hasn't added the works to their profile yet. It is automatically generated from public (personal) data to further our legitimate goal of comprehensive and accurate scientific recordkeeping. If you are this author and want this page removed, please let us know.
August 1994
·
37 Reads
·
23 Citations
Phytochemistry
A new acylated flavone C-glycoside, apigenin 6-C-alpha-L-rhamnopyranoside-8-C-[6"-(3-hydroxy-3-methyl-glutaroyl )-beta-D-glucopyranoside], was isolated from rhizomes of Glycyrrhiza eurycarpa and its structure was established on the basis of spectroscopic data.
May 1994
·
25 Reads
·
34 Citations
Phytochemistry
A new flavonol tetraglycoside, together with two known flavonol glycosides, kaempferol 7-rhamnoside and kaempferol 3-rhamnosyl(1-->6) galactoside-7-rhamnoside, were isolated from fresh plant material of Cephalocereus senilis. The structure of the new compound was established as kaempferol 3-O-beta-D-glucopyranosyl(1-->2)-O-[alpha-L-rhamnopyranosyl (1-->6)]-beta-D-galactopyranoside-7-O-alpha-L-rhamnopyranoside based on spectroscopic data. The whole plant flavonoid chemistry was strikingly different from that found previously in chitin-treated cell suspension cultures of the same plant.
... Their structures were identified by HR-MS and NMR analyses ( Fig. 4C and D, Table 1), and the NMR spectra of #3532 and #254 were reported for the first time. All the three compounds exhibited an NL of 144 Da (C 6 H 8 O 5 ) in the MS/MS spectra, indicating the presence of a 3-hydroxy-3-methylglutaroyl group according to a literature [33]. By further analysis of the 2 D NMR data ( 1 H-1 H COSY, HSQC, and HMBC, Fig. S3-S14), #3371, #3532 and #254 were identified as apigenin 6-C-α-L-rhamnoside-8-C-(6 ′ -(3-hydro xy-3-methylglutaroyl)-β-D-glucoside) [33], apigenin 6-C-α-L-glucoside 8-C-(6 ′ -O-(3-hydroxyl-3-methylglurtaroyl)-β-D-glucoside), and apigenin 6-C-α-L-arabinoside-8-C-(6 ′ -O-(3-hydroxyl-3-methylglurtaroyl)-β-D-glu coside), respectively. ...
August 1994
Phytochemistry
... The n-butanolic extract obtained from the plant was fractionated by a repeatedly chromatographic procedures with normal-phase and reversed-phase silica gel, layer chromatography (TLC) to isolate and characterize for the first time five compounds in L. lanuginosus: lotaustralin (1), [23] kaempferol-7-O-α-L-rhamnopyranoside (2), [24] kaempferol-3-O-apiofuranosyl-7-O-rhamnopyranosyl (3), [13] isorhamnetin 3-O-rutinoside (4), [25] ...
May 1994
Phytochemistry
