作者:Dongli Zeng、Qixi Mi、Hongfang Sun、Haifang Wang
DOI:10.1002/jlcr.806
日期:2004.3.15
Resveratrol (trans-3,4′,5-trihydroxystilbene) is a naturally occurring phytoalexin and polyphenol existing in grapes and various plants. It shows remarkable beneficial bioactivities in the prevention of cancer, inflammation and platelet aggregation, etc. This paper reports the synthesis of [β-14C]-trans-resveratrol using 14C-formic acid (exchanged with sodium 14C-formate) and 3,5-dihydroxybenzoic acid as the starting materials. [14C-formyl]-4-methoxybenzaldehyde and diethyl 3,5-dimethoxy benzylphosphonate reacted following the Wittig–Horner reaction to give trans-3,4′,5-[β-14C]-trimethoxystilbene. The final product was obtained through the demethylation of trans-3,4′,5-[β-14C]-trimethoxystilbene and identified by TLC and UV spectroscopy. Adoption of the whole procedure provided 14C-resveratrol with a specific radioactivity of 40.8 µCi/mmol, chemical yield of 15.3% and radiochemical yield of 12.5%. Copyright © 2004 John Wiley & Sons, Ltd.
白藜芦醇(反式-3,4',5-三羟基芪)是一种天然植物抗毒素和多酚物质,存在于葡萄和各种植物中。它在预防癌症、炎症和血小板聚集等方面显示出显著的有益生物活性。本文报道了以14C-甲酸(与14C-甲酸钠交换)和3,5-二羟基苯甲酸为原料合成[β-14C]-反式白藜芦醇的方法。[14C-甲酰基]-4-甲氧基苯甲醛和二乙基3,5-二甲氧基苄基膦酸酯通过Wittig-Horner反应得到反式-3,4'-5-[β-14C]-三甲氧基芪。最终产物通过反式-3,4'-5-[β-14C]-三甲氧基芪的脱甲基化获得,并通过TLC和UV光谱鉴定。该方法合成的14C-白藜芦醇比活性为40.8 µCi/mmol,化学产率为15.3%,放射化学产率为12.5%。版权所有 © 2004 John Wiley & Sons, Ltd.