An enantioselective synthetic strategy toward the polyhydroxylated agarofuran
作者:Gang Zhou、Xiaolei Gao、Weidong Z Li、Yulin Li
DOI:10.1016/s0040-4039(01)00377-x
日期:2001.4
This paper describes a new approach for the enantioselective syntheses of naturally occurring polyhydroxylated dihydroagarofuran sesquiterpenoids starting from (-)-carvone. Through utilizing asymmetric Robinson annulation and acetoxylation as key steps, the agarofuran skeleton was enantioselectively constructed and an oxyfunctionalized group was introduced into the C-l position. The important intermediate 23 to dihydroagarofuran was obtained in eleven steps. (C) 2001 Elsevier Science Ltd. All rights reserved.
Asymmetric total synthesis of (−)-isocelorbicol, a natural dihydroagarofuran sesquiterpenoid
作者:Wei-Dong Z Li、Gang Zhou、Xiaolei Gao、Yulin Li
DOI:10.1016/s0040-4039(01)00810-3
日期:2001.7
The first enantioselective totalsynthesis of (−)-isocelorbicol, a naturally occurring sesquiterpene polyol of the agarofuran group, starting from optically active 9-oxo-10-epi-α-cyperone (8) is described.