Neochamaejasmin B 是一种提取自Stellera chamaejasme L.的双黄酮化合物。它在 C-2/C-3 和 C-2″/C-3″ 位置具有顺反几何结构。

Neochamaejasmine B displays nematicidal activity against both Bursaphelenchus xylophilus and Bursaphelenchus mucronatus.

In this field, Stellera chamaejasme L. (Thymelaeaceae) is one of the most toxic and ecologically-threatening weeds in some of the grasslands of north and west China. Bioassay-guided fractionation of root extracts of this plant led to the isolation of eight flavonoids 1-8, whose structures were elucidated by spectroscopic analysis. All compounds obtained, except 7-methoxylneochaejasmin A (4) and (+)-epiafzelechin (5), showed strong phytotoxic activity against Arabidopsis thaliana seedlings. Seedling growth was reduced by neochamaejasmin B (Neochamaejasmine B,1), mesoneochamaejasmin A (2), chamaejasmenin C (3), genkwanol A (6), daphnodorin B (7) and dihydrodaphnodorin B (8) with IC50 values of 6.9, 12.1, 43.2, 74.8, 7.1 and 27.3μg/mL, respectively, and all of these compounds disrupted root development[1]

90411-12-4

C30H22O10

542.49

新狼毒素B

DMSO:65 mg/ml (119.82 mM)
Powder: -20°C for 3 years
In solvent: -80°C for 2 years