Taxonomic group: plant / Streptophyta
(Phylum: Streptophyta)
Organ / tissue: root
The structure was elucidated in this paperPublication DOI: 10.1080/10286029808039840Journal NLM ID: 100888334Publisher: Harwood Academic Publishers; London: Informa Healthcare
Institutions: Natural Products Laboratory, Department of Chemistry, Dr. H.S. Gour University, Sagar, India
A new flavonoid glycoside (1) was isolated from the roots of Mimosa rubicaulis, its structure was elucidated as 5,7,4'-trihydroxy-6,3',5'-trimethoxy-flavone-7-O-alpha-L-arabinopyranosyl-(1-->6)-O-beta-D-glucopyranoside by chemical degradation and spectral analysis.
saponin, Leguminosae, Abrus precatorius, C-glycosyl flavone
Structure type: oligomer ; 654
C
29H
34O
17Location inside paper: p. 17, Scheme, compound 1
Compound class: glycoside
Contained glycoepitopes: IEDB_142488,IEDB_146664,IEDB_983931,SB_192
Methods: 13C NMR, 1H NMR, IR, acid hydrolysis, UV, extraction, permethylation, EI-MS, elemental analysis, enzymatic treatment, metling point determination
Enzymes that release or process the structure: takadiastase
NCBI Taxonomy refs (TaxIDs): 3816
Show glycosyltransferases
NMR conditions: in CDCl3
[as TSV]
13C NMR data:
Linkage Residue C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14
7,6 aLArap 106.01 72.00 74.50 68.90 66.20
7 bDGlcp 101.90 74.85 78.25 72.20 77.30 70.01
6 Me
3' Me
5' Me
Subst 164.60 103.20 181.09 153.04 130.90 ? ? ? 121.40 105.20 147.02 140.01 147.90 105.20
1H NMR data:
Linkage Residue H1 H2 H3 H4 H5 H6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16 H17
7,6 aLArap 4.96 ? ? ? ?
7 bDGlcp 4.79 ? ? ? ? ?
6 Me 3.70
3' Me 3.70
5' Me 3.70
Subst - 6.58 - - - - 6.68 - - - 7.34 - - - 7.34 3.75 3.86
1H/13C HSQC data:
Linkage Residue C1/H1 C2/H2 C3/H3 C4/H4 C5/H5 C6/H6 C7/H7 C8/H8 C9/H9 C10/H10 C11/H11 C12/H12 C13/H13 C14/H14 C15/H15 C16/H16 C17/H17
7,6 aLArap 106.01/4.96 72.00/? 74.50/? 68.90/? 66.20/?
7 bDGlcp 101.90/4.79 74.85/? 78.25/? 72.20/? 77.30/? 70.01/?
6 Me NMR TSV error 2: unequal length of 13C and 1H datasets
3' Me NMR TSV error 2: unequal length of 13C and 1H datasets
5' Me NMR TSV error 2: unequal length of 13C and 1H datasets
Subst NMR TSV error 2: unequal length of 13C and 1H datasets
1H NMR data:
| Linkage | Residue | H1 | H2 | H3 | H4 | H5 | H6 | H7 | H8 | H9 | H10 | H11 | H12 | H13 | H14 | H15 | H16 | H17 |
|---|
| 7,6 | aLArap | 4.96 | ? | ? | ? | ? | |
| 7 | bDGlcp | 4.79 | ? | ? | ? | ? | ? | |
| 6 | Me | 3.70 | |
| 3' | Me | 3.70 | |
| 5' | Me | 3.70 | |
| | Subst |
| 6.58 |
|
|
|
| 6.68 |
|
|
| 7.34 |
|
|
| 7.34 | 3.75 | 3.86 |
|
13C NMR data:
| Linkage | Residue | C1 | C2 | C3 | C4 | C5 | C6 | C7 | C8 | C9 | C10 | C11 | C12 | C13 | C14 |
|---|
| 7,6 | aLArap | 106.01 | 72.00 | 74.50 | 68.90 | 66.20 | |
| 7 | bDGlcp | 101.90 | 74.85 | 78.25 | 72.20 | 77.30 | 70.01 | |
| 6 | Me | |
| 3' | Me | |
| 5' | Me | |
| | Subst | 164.60 | 103.20 | 181.09 | 153.04 | 130.90 | ? | ? | ? | 121.40 | 105.20 | 147.02 | 140.01 | 147.90 | 105.20 |
|
The spectrum also has 3 signals at unknown positions (not plotted). |
There is only one chemically distinct structure:
Found 
report error