作者: Gerald Pattenden , Johan M. Winne
DOI: 10.1016/J.TETLET.2010.07.102
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摘要: A new approach to the synthesis of oxygenated furanocembranoids, exemplified by danielid 3, is described. The features an intermolecular Knoevenagel-type condensation together with intramolecular aldolisation elaborate furan and lactone rings, respectively, in initial target compound 14. Efforts isomerise C13–C14 double bond, or introduce alkene bond at C11–C12 14, leading structures 3 8, are