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1. (Article ID: 11447)
De Tommasi N, Piacente S, Pizza C
Flavonol and chalcone ester glycosides from Bidens andicola
Journal of Natural Products 61(8) (1998)
973-977
Five new flavonol 7-O-glycosides (1-5),having quercetin or quercetin 3-methyl ether as their aglycons, and sugar chains made up of three or four sugars, including beta-D-glucopyranose, alpha-L-rhamnopyranose, and beta-D-xylopyranose, have been isolated from the aerial parts of Bidens andicola, along with a new chalcone ester glycoside (6) and five known chalcone ester glycosides. The structures of 1-6 were elucidated using a combination of spectroscopic techniques.
NMR-spectroscopy, flavonoids, Bidens andicola
NCBI PubMed ID: 9722478Publication DOI: 10.1021/np970470fJournal NLM ID: 7906882Publisher: American Society of Pharmacognosy
Correspondence: De Tommasi N
ponza.dia.unisa.it>
Institutions: Dipartimento di Scienze Farmaceutiche, Università degli Studi di Salerno, Salerno, Italy
Methods: 13C NMR, 1H NMR, FAB-MS, acid hydrolysis, methanolysis, extraction, TOCSY, CC, DQF-COSY, HMBC, DEPT, HSQC
The publication contains the following compound(s):
- Compound ID: 29180
|
b-D-Xylp-(1-2)-+
|
a-L-Rhap-(1-2)-a-L-Rhap-(1-6)-b-D-Glcp-(1-7)-Quercetin3Me |
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Structure type: oligomer
; 901 [M-H]-
C39H50O24
Compound class: glycoside
- Compound ID: 29181
Structure type: oligomer
; 755 [M-H]-
C33H40O20
Compound class: glycoside
- Compound ID: 29182
|
b-D-Xylp-(1-2)-+
|
a-L-Rhap-(1-2)-b-D-Glcp-(1-6)-b-D-Glcp-(1-7)-Quercetin3Me |
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Structure type: oligomer
; 917 [M-H]-
C39H50O25
Compound class: glycoside
- Compound ID: 29183
|
b-D-Xylp-(1-2)-+
|
?%a-L-Rhap-(1-2)-a-L-Rhap-(1-6)-b-D-Glcp-(1-7)-Quercetin |
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Structure type: oligomer
; 887, 741 [M-H]-
C38H48O24
Compound class: glycoside
- Compound ID: 29184
|
Cin-(9-6)-b-D-Glcp2Ac-(1-4')-Subst3Me
Subst = okanin = SMILES O=C(C1=CC={54}C(O){53}C(O)={52}C1O)/C=C/C2=CC={4}C(O){3}C(O)=C2 |
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Structure type: oligomer
; 605 [M-H]-
C32H30O12
Compound class: glycoside
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