Regio- and Stereoselective Biomimetic Synthesis of Oligostilbenoid Dimers from Resveratrol Analogues: Influence of the Solvent, Oxidant, and Substitution
作者:Saraswati S. Velu、Irmaizatussyehdany Buniyamin、Lee Kiew Ching、Fareeda Feroz、Ibrahim Noorbatcha、Lim Chuan Gee、Khalijah Awang、Ibtisam Abd. Wahab、Jean-Frédéric Faizal Weber
DOI:10.1002/chem.200801575
日期:——
Oligostilbenoids are polyphenols that are widely distributed in nature with multifaceted biological activities. To achieve biomimetic synthesis of unnatural derivatives, we subjected three resveratrol analogues to oligomerization by means of one-electron oxidants. Upon varying the metal oxidant (AgOAc, CuBr(2), FeCl(3)6 H(2)O, FeCl(3)6 H(2)O/NaI, PbO(2), VOF(3)), the solvent (over the whole range of
寡类类胡萝卜素是多酚,在自然界中广泛分布,具有多方面的生物活性。为了实现仿生合成非天然衍生物,我们通过单电子氧化剂对三种白藜芦醇类似物进行了低聚。改变金属氧化剂(AgOAc,CuBr(2),FeCl(3)6 H(2)O,FeCl(3)6 H(2)O / NaI,PbO(2),VOF(3))后,溶剂(在整个极性范围内),以及原料的氧化取代模式,获得具有完全不同的碳骨架的二苯乙烯类低聚物。在这里,我们建议解释借助硬酸和软酸/碱概念生产的骨架类型的确定性,以及溶剂的溶剂化特性和通过pi堆积效应产生的优选排列方式。