| Description | Vincetoxicoside B, isolated from Polygonum paleaceum Wall. Vincetoxicoside B , quercetin, kaempferol , and (-)-epicatechin show synergistic antifungal activities with the FICI values <0.5. |
| In vitro | 新化合物neopaleaceolactoside (1) 以及九种已知化合物phyllocoumarin (2)、quercetin (3)、quercitrin (4)、quercetin-3-methyl ether (5)、Vincetoxicoside B (6)、isoquercitrin (7)、kaempferol (8)、(-)-epicatechin (9)、chlorogenic acid (10) 从Polygonum paleaceum Wall分离得到。通过一维及二维核磁共振技术、质谱以及与报道的光谱数据对比确定了它们的化学结构。选定的某些化合物进行了抗真菌活性筛选。Quercetin (3)、Vincetoxicoside B (6)、kaempferol (8) 和(-)-epicatechin (9) 显示了与FICI值<0.5的协同抗真菌活性。 |
| Synonyms | 田基黄苷, 白前苷 B |
| molecular weight | 448.38 |
| Molecular formula | C21H20O11 |
| CAS | 22007-72-3 |
| Storage | |Powder: -20°C for 3 years | In solvent: -80°C for 1 year |
| Solubility | DMSO: 4.48 mg/mL (10 mM) |
| References | 1. Chemical constituents from the rhizome of Polygonum paleaceum and their antifungal activity.J Asian Nat Prod Res. 2017 Jan;19(1):47-52. |