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1. (Article ID: 11418)
El-Mousallamy AMD
Leaf flavonoids of Albizia lebbeck
Phytochemistry 48(4) (1998)
759-761
Two new tri-O-glycoside flavonols: kaempferol and quercetin 3-O-alpha-rhamnopyranosyl(1 --> 6)-beta-glucopyranosyl(1 --> 6)-beta-galactopyranosides, were identified from the leaves of Albizia lebbeck. Structures were established by conventional methods of analysis and confirmed by ESI-MS, H-1 and C-13-NMR spectral analysis.
NMR spectral analysis, Leguminosae, Albizia lebbeck, quercetin and kaempferol 3-rhamnosyl (1 -> 6)glucosyl(1 -> 6)galactoside, flavonol trisaccharides
NCBI PubMed ID: 9664705Publication DOI: 10.1016/s0031-9422(97)01117-5Journal NLM ID: 0151434Publisher: Elsevier
Institutions: Faculty of Science, Zagazig University, Zagazig, Egypt
Methods: 13C NMR, 1H NMR, IR, enzymatic hydrolysis, ESI-MS, UV, extraction, optical rotation measurement, CC
The publication contains the following compound(s):
- Compound ID: 29073
Structure type: oligomer
; 771 [M-H]-
C21H26O9
Compound class: glycoside
- Compound ID: 29074
Structure type: oligomer
; 625 [M-H]-
C21H26O9
Compound class: glycoside
- Compound ID: 29075
Structure type: oligomer
; 755 [M-H]-
C21H26O9
Compound class: glycoside
- Compound ID: 29076
Structure type: oligomer
; 609 [M-H]-
C21H26O9
Compound class: glycoside
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2. (Article ID: 11419)
El-Emary NA, Backheet EY
Three hydroxymethylanthraquinone glycosides from Rubia tinctorum
Phytochemistry 49(1) (1998)
277-279
Three hydroxymethylanthraquinone glycosides, in addition to the known compounds alizarin, lucidin-omega-ethyl ether, lucidin primeveroside and the iridoid asperuloside were isolated from the dried roots of Rubia tinctorum. The first three compounds were isolated for the first time from this species. The structures were established as 1-hydroxy-2-hydroxymethylanthraquinone 3-glucoside, 2-hydroxymethylanthraquinone 3-glucoside and 3,8-dihdroxy-2-hydroxymethylanthraquinone 3-glucoside.
spectroscopic analysis, anthraquinones, anthraquinone glycosides, Rubiaceae, Iridoids, Rubia tinctorium
Publication DOI: 10.1016/S0031-9422(97)01121-7Journal NLM ID: 0151434Publisher: Elsevier
Institutions: Pharmacognosy Department, Faculty of Pharmacy, Assiut University, Assiut, Egypt
Methods: 13C NMR, 1H NMR, IR, MS, UV, extraction, CC
The publication contains the following compound(s):
- Compound ID: 29077
|
b-D-Glcp-(1-3)-Subst
Subst = 3-hydroxy-2-hydroxymethylanthraquinone = SMILES O=C(C1=C2C={3}C(O)C({15}CO)=C1)C3=CC=CC=C3C2=O |
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Structure type: monomer
; 256
Compound class: glycoside
- Compound ID: 29078
|
b-D-Glcp-(1-3)-Subst
Subst = lucidin = SMILES O=C(C1=C{3}C(O)=C({15}CO){1}C(O)=C12)C3=CC=CC=C3C2=O |
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Structure type: monomer
; 270
Compound class: glycoside
- Compound ID: 29079
|
b-D-Xylp-(1-6)-b-D-Glcp-(1-3)-Subst
Subst = lucidin = SMILES O=C(C1=C{3}C(O)=C({15}CO){1}C(O)=C12)C3=CC=CC=C3C2=O |
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Structure type: oligomer
; 254
Trivial name: lucidin primeveroside
Compound class: glycoside
- Compound ID: 29080
|
b-D-Glcp-(1-1)-Subst
Subst = asperuloside aglycon = SMILES O{10}CC1=C[C@H]2[C@H]3[C@@H]1{1}[C@H](O)OC=C3C(O2)=O |
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Structure type: monomer
; 431
Trivial name: asperuloside
Compound class: glycoside
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