Synthesis of the non-adjacent bis-THF core of cis-sylvaticin using a double oxidative cyclisation
作者:Riaz A. Bhunnoo、Heather Hobbs、Dramane I. Lainé、Mark E. Light、Richard C. D. Brown
DOI:10.1039/b813201a
日期:——
non-adjacent bis-THF core of the Annonaceousacetogenincis-sylvaticin (1) is described. C2 Symmetrical (Z,E,E,Z)- and (E,E,E,E)-tetraenes 5 and 6 were synthesised in six and three steps respectively from (1E,5E,9E)-cyclododeca-1,5,9-triene. Subsequent permanganate promoted asymmetric bi-directional oxidative cyclisation of tetraene 5 was used to create the non-adjacent bis-THF core of 1, installing seven of the