Phyllocladene has been converted into some 15- and 16-oxo derivatives. The rotary dispersion curves of these indicate that XV is the most likely structure for mirene.
Synthesis of a neoatisiranone, the enantiomer of a ketone obtained by the acid-catalysed rearrangement of isophyllocladene epoxide
作者:P. A. Gunn、R. McCrindle、R. G. Roy
DOI:10.1039/j39710001018
日期:——
The constitution and stereochemistry of a compound obtained by the acid-catalysed rearrangement of isophyllocladene epoxide have been confirmed by a synthesis of its enantiomer from (–)-neoatisirene. In addition, it has been shown that the neoatisiranol (XII) on dehydration undergoes skeletal rearrangement to the olefin (XIII).
Diterpenes. Part X. Some transformations of phyllocladene and isophyllocladene
作者:K. M. Baker、Lindsay H. Briggs、J. G. St. C. Buchanan、R. C. Cambie、B. R. Davis、R. C. Hayward、G. A. S. Long、P. S. Rutledge
DOI:10.1039/p19720000190
日期:——
The products from, and the effect of solvent on the ring-opening of 15α,16-epoxyphyllocladane (1) and of 16,17-epoxyphyllocladane (17) with boron trifluoride have been examined. The action of other Lewis acids has also been investigated. Treatment of 15α,16-epoxykaurane (21) with boron trifluoride–ether complex results in rearrangement, giving atisiran-15-one (25).