Taxonomic group: plant / Streptophyta
(Phylum: Streptophyta)
Organ / tissue: pericarp
The structure was elucidated in this paperPublication DOI: 10.1076/phbi.37.1.28.6327Journal NLM ID: 9812552Publisher: Lisse, the Netherlands: Swets & Zeitlinger
Institutions: Laboratory of Pharmacognosy, Faculty of Pharmacy, University of Alcalá de Henares, Madrid, Spain
From fruits of Myrtus communis L. (Myrtaceae) myricetin-3-O-rhamnoside or myricitrin (1), hesperetin-7-O-rhamnoglucoside or hesperidin (2), hesperin-2'-O-methyl-chalcone-4'-O-rhamnoglucoside (3) and esculetin-6-O-glucoside or esculin (4) were isolated. This is the first report of compounds 2, 3 and 4 isolated from M. communis.
hesperidin, myricitrin, esculin, heperidin-methyl-chalcone, Myrtus communis L.
Structure type: monomer ; 464
C
21H
20O
12Location inside paper: compound 1, myricitrin, fig. 1(1)
Trivial name: myricitrin
Compound class: glycoside, flavonoid glycoside, flavone glycoside
Contained glycoepitopes: IEDB_136105,IEDB_225177,IEDB_885823
Methods: 13C NMR, 1H NMR, TLC, UV, optical rotation measurement, HCl hydrolysis
Comments, role: NMR temperature was not specified
Related record ID(s): 63048, 63049, 63050
NCBI Taxonomy refs (TaxIDs): 119949
Show glycosyltransferases
NMR conditions: in CD3OD
[as TSV]
13C NMR data:
Linkage Residue C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14 C15 C16
3 aLRhap 103.6 71.8 72.1 73.3 72.0 17.6
xXMyricetin - 159.2 136.3 179.7 163.2 99.8 165.8 94.7 158.5 105.9 121.9 109.6 146.8 137.8 146.8 109.6
1H NMR data:
Linkage Residue H1 H2 H3 H4 H5 H6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
3 aLRhap 5.33 ? ? ? ? 0.98
xXMyricetin - - - - - 6.19 - 6.36 - - - 6.91 - - - 6.91
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
3 aLRhap 103.6/5.33 71.8/? 72.1/? 73.3/? 72.0/? 17.6/0.98
xXMyricetin 99.8/6.19 94.7/6.36 109.6/6.91 109.6/6.91
1H NMR data:
| Linkage | Residue | H1 | H2 | H3 | H4 | H5 | H6 | H7 | H8 | H9 | H10 | H11 | H12 | H13 | H14 | H15 | H16 |
|---|
| 3 | aLRhap | 5.33 | ? | ? | ? | ? | 0.98 | |
| | xXMyricetin |
|
|
|
|
| 6.19 |
| 6.36 |
|
|
| 6.91 |
|
|
| 6.91 |
|
13C NMR data:
| Linkage | Residue | C1 | C2 | C3 | C4 | C5 | C6 | C7 | C8 | C9 | C10 | C11 | C12 | C13 | C14 | C15 | C16 |
|---|
| 3 | aLRhap | 103.6 | 71.8 | 72.1 | 73.3 | 72.0 | 17.6 | |
| | xXMyricetin |
| 159.2 | 136.3 | 179.7 | 163.2 | 99.8 | 165.8 | 94.7 | 158.5 | 105.9 | 121.9 | 109.6 | 146.8 | 137.8 | 146.8 | 109.6 |
|
The spectrum also has 1 signal at unknown position (not plotted). |
There is only one chemically distinct structure:
Found 
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