Synthetic studies of furanosesquiterpenoid tetrahydrolinderazulenes. Total synthesis of (±)-echinofuran
作者:Ho-Kee Yim、Yun Liao、Henry N.C Wong
DOI:10.1016/s0040-4020(03)00181-9
日期:2003.3
reported to inhibit cell division of fertilized sea urchin eggs. The synthesis of 1 was achieved by a Ring A→RingAC→RingABCapproach employing 3-methyl-4-(trimethylsilyl)furan (2) as a precursor. A Suzuki coupling reaction and a Lewis acid mediated Friedel-Crafts cyclization were the other key steps in the construction of the ringsystems. In other preliminary model studies, two furan-containing 5,7,5-fused