Total synthesis of eudesmane terpenes by site-selective C–H oxidations
作者:Ke Chen、Phil S. Baran
DOI:10.1038/nature08043
日期:2009.6
logic needed for the cyclase phase of terpenesynthesis, particularly in the area of polyene cyclizations, much remains to be learned if the oxidase phase is to be mimicked in the laboratory. Here we show how the logic of terpene biosynthesis has inspired the highly efficient and stereocontrolled syntheses of five oxidized members of the eudesmane family of terpenes in a modicum of steps by a series of
Abstract Artemisia pygmaea Gray contains two sesquiterpenealcohols: the known cryptomeridiol (I) and pygmol (II), a new compound. No sesquiterpene lactones were found in the plant although other species of the section Tridentatae Rydb., with which A. pygmaea has been classified, are usually rich in lactones.