The intramolecular [4+2]π cycloadditions of (3-alkenyl)cyclopentadienes
作者:Roger L. Snowden
DOI:10.1016/0040-4039(81)80158-x
日期:1981.1
The intramolecular diels-alder reactions of (E)- and (Z)-methyl 5-12-methyl-4-(trihethylsilyloxy)-2,4-cyclopentadienyl]-2-pentenoate. A stereoselective synthesis of (±)-sativene
作者:Roger L. Snowden
DOI:10.1016/s0040-4020(01)87392-0
日期:1986.1
The intramolecular Diels-Alderreactions of (E)- and (Z)-trime-thylsilyl cyclopentadienyl ethers, (E)-6a and (2)-6a, proceed with excellent stereo- and regioselectivity. Starting from the tricyclic keto ester 8, available from the former reaction, a stereoselective synthesis of (±)-sativene (26) is described.