Research Article
Antibacterial Activity of Chalcone and Dihydrochalcone Compounds from Uvaria chamae Roots against Multidrug-Resistant Bacteria
Table 3
Identified compounds within the antimicrobial fractions.
| Retention Time
(min) | λ max
(nm) | Observed m/z
[M-H]- | Identified structures | Mass error
(ppm) | Matched Fragments | Observed CCS
(Å2) | ChemspiderID |
| | 5.14 | 330 | 375.1235 | “Uvaretin chalcone form”
(2E)-1-[2,4-Dihydroxy-3-(2-hydroxybenzyl)-6methoxyphenyl]-3-phenyl-2-propen-1-one | 0.1 | 15 | 193.6 | 21375497 |
| | 5.20 | 325 | 375.1237 | “iso-Uvaretin chalcone form”
(2E)-1-[4,6-Dihydroxy-3-(2-hydroxybenzyl)-2methoxyphenyl]-3-phenyl-2-propen-1-one | - 0.1 | 12 | 190.5 | |
| | 5.28 | - | 271.0971 | Uvangoletin | - 1.0 | 3 | 166.5 | 4984098 |
| | 5.57 | 325 | 361.1082 | Chamanetin | 0.7 | 11 | 184.3 | 10305898 |
| | 5.76 | 330 | 361.108 | iso-Chamanetin | 1.0 | 10 | 189.3 | 10305892 |
| | 5.80 | 325 | 377.1393 | iso-Uvaretin (Chamuvaritin II) | 0.9 | 21 | 191.7 | 133675 |
| | 5.99 | 339 | 481.1653 | “Diuvaretin chalcone form”
(2E)-1-[2,4-Dihydroxy-3,5-bis(2-hydroxybenzyl)-6methoxyphenyl]-3-phenyl-2-propen-1-one | - 0.2 | 26 | 219.1 | |
| | 6.20 | 330 | 377.1391 | Uvaretin | 0.1 | 15 | 195.5 | 66150 |
| | 6.40 | 330 | 467.1498 | Dichamanetin | 0.1 | 14 | 215.2 | 9894419 |
| | 6.70 | 339 | 483.1812 | Diuvaretin | 0.2 | 21 | 213.6 | 2342170 |
|
|
structure deposited in Chemspider and Pubchem. |
