Jx. Wu et al., A novel rearrangement of eudesmanolide enol ester epoxide: facile 1-step construction of the salvialane sesquiterpene skeleton, TETRAHEDR-A, 12(10), 2001, pp. 1459-1462
A Nobel carbon-carbon rearrangement for the eudesmanolide sesquiterpene eno
l ester epoxide in the presence of a catalytic amount of Lewis acids (3 - 1
0 mol%) or an excess of NaOMe is disclosed. This reaction,vas developed to
give a facile. one-step procedure for the construction of naturally occurri
ng and bioactive salvialane sesquiterpenes. The reaction conditions were in
vestigated extensively and a possible reaction mechanism is also discussed.
(C) 2001 Elsevier Science Ltd. All rights reserved.