【摘 要】
：
Two new stilbenoids, cis-e-viniferin (3) and 2b,14b-dehydro-bisresveratrol (4) were synthesized by photooxida-tion reaction of trans-e-viniferin (2) prepared fr
【机 构】
：
Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, B
【出 处】
：
Chinese Journal of Chemistry
论文部分内容阅读
Two new stilbenoids, cis-e-viniferin (3) and 2b,14b-dehydro-bisresveratrol (4) were synthesized by photooxida-tion reaction of trans-e-viniferin (2) prepared from trans-resveratrol (1). Pentamethoxyl trans-e-viniferin (5) and pentamethoxyl cis-e-viniferin (6) were also obtained by methylation of trans-e-viniferin (2) with (MeO)2SO2. Their structures were elucidated on the basis of spectral evidence. Compounds 3 and 4 showed potent inhibition of TNF-a at concentrations of 10-5 molL-1 with inhibitory ratios of 51.43% and 36.64%, respectively.
Two new stilbenoids, cis-e-viniferin (3) and 2b, 14b-dehydro-bisresveratrol (4) were synthesized by photooxida- tion reaction of trans-e-viniferin (2) prepared from trans-resveratrol The structures were elucidated on the basis of spectral evidence. Compounds 3 and 4 showed potent inhibition of TNF-a at concentrations of 10-5 mol L-1 with inhibitory ratios of 51.43% and 36.64%, respectively.
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