The first total synthesis of (±)-demethyl salvicanol
作者:Xuechao Wang、Xinfu Pan、Yuxin Cui、Yaozu Chen
DOI:10.1016/0040-4020(96)00604-7
日期:1996.8
Demethyl salvicanol, a novel rearranged 9(10→20)-abeo-8, 11, 13-triene diterpene, has been synthesize for the first time. The zinc-promoted coupling reaction of benzyl bromide with ketone and the alkylation of ketone with iodide are the key steps.
An intramolecular aromatic oxidation of a phenolic compound with a hypervalent iodine reagent afforded the coupling product, in which the coupling took place at the para-position of the methoxy goup of the starting material instead of the desired para-position of the isopropenyl group, unfortunately.