Wj. Xia et al., A novel base-promoted rearrangement of eudesmanolide sesquiterpenoid to the salvialane sesquiterpene, SYN COMMUN, 31(10), 2001, pp. 1613-1617
An eudesmanolide sesquiterpene epoxide has been transformed to an alpha -hy
droxy ketone with the salviane sesquiterpene skeleton through a novel carbo
n-carbon rearrangement promoted by excess of NaOMe in Et2O at room temperat
ure which accomplished the first synthesis of the salviane kind of sesquite
rpene skeleton. A possible reaction mechanism is also discussed.