Secolignans with antiangiogenic activities from Peperomia dindygulensis.


Two new secolignans, peperomins G and H (1 and 2, resp.), were isolated from the whole plant of Peperomia dindygulensis, together with five known secolignans, peperomin A (3), peperomin E (4), peperomin B (5), 2,3-trans-2-methyl-3-{(3-hydroxy-4,5-dimethoxyphenyl)[5-methoxy-3,4-(methylenedioxy)phenyl]methyl}butyrolactone (6), 2,3-cis-2-(hydroxymethyl)-3-{bis[5-methoxy-3,4-(methylenedioxy)phenyl]methyl}butyrolactone (7). Their structures and configurations were elucidated by spectroscopic methods including 2D-NMR techniques. Antiangiogenic effects of all compounds were evaluated using human umbilical vein endothelial cells (HUVEC) proliferation and tube-formation tests, with compounds 4 and 5 being active in the bioassay. Compounds 4 and 5 induced obvious cell toxicity to HUVEC with IC(50) values of 1.64±0.19 and 8.44±0.4 μM, respectively. Compounds 4 and 5 also exhibited significant HUVEC tube formation-inhibiting activity with IC(50) values of 3.13±0.09 and 6.24±0.12 μM, respectively.

DOI: 10.1002/cbdv.201000123

Cite this paper

@article{Lin2011SecolignansWA, title={Secolignans with antiangiogenic activities from Peperomia dindygulensis.}, author={Meng-Gan Lin and De-Hong Yu and Qi-wei Wang and Qin Lu and Wen-Jun Zhu and Fan Bai and Gui-Xiu Li and Xiang-Wen Wang and Yi-Fang Yang and Xuemei Qin and Chao Fang and Hongzhuan Chen and Guo-Hong Yang}, journal={Chemistry & biodiversity}, year={2011}, volume={8 5}, pages={862-71} }