A radical cyclisation based strategy to cuparenoids; synthesis of (±)-α-cuparenone, (±)-epilaurene and laurenes
作者:A. Srikrishna、G. Sundarababu
DOI:10.1016/s0040-4020(01)81528-3
日期:1990.1
Mercuric acetate catalysed one pot Claisen rearrangement of the cinnamyl alcohol 5, generated the pent-4-enal 9, which on homologation resulted the hex-5-enal 10. Radical cyclisation of the radical anion derived from 10, followed by oxidation provided the ketone mixture 4, a known precursor to the sesquiterpenes (+)-α-cuparenone (1), (+)-epilaurene (3) and laurene (2).
乙酸汞催化一锅肉桂醇5的克莱森重排,生成戊4-烯9,经同源化生成己烯5-烯10。自由基衍生自10的自由基阴离子,然后进行氧化,得到酮混合物4,是倍半萜烯(+)-α-cuparenone(1),(+)-epilaurene(3)和Laurene(2)的已知前体。