Synthetic Studies toward the Construction of the <i>cis</i>-Decalin Portion of Superstolides A and B. Application of a Sequential Double Michael Reaction and an Anionic Oxy-Cope Rearrangement
作者:Zhengmao Hua、Wensheng Yu、Mei Su、Zhendong Jin
DOI:10.1021/ol050339w
日期:2005.5.1
A highly convergent strategy for the asymmetric synthesis of the cis-decalin portion of the antitumor macrolide superstolide A was developed. The key reactions in our approach involve a sequential double Michael reaction and an anionic oxy-Coperearrangement.
Photooxygenation of 2(gamma-hydroxyalkyl)furans followed by dehydration affords, in one synthetic operation and in high yield, gamma-spiroketal gamma-lactones. This newly developed technology was successfully applied to the synthesis of three different epimers of pyrenolide D, as well as to the first synthesis of the anticancer natural product crassalactone D and its C4-epimer.
Synthesis and reactivity of C-6 substituted (Z)-alk-2-en-4-ynoic acids
作者:Gary Struve、Stanley Seltzer
DOI:10.1021/jo00132a023
日期:1982.5
STRUVE, G.;SELTZER, S., J. ORG. CHEM., 1982, 47, N 11, 2109-2113