Synthesis of spongian diterpenes: (−)-spongian-16-oxo-17-al and (−)-acetyldendrillol-1
作者:Manuel Arnó、Miguel A González、M.Luisa Marı́n、Ramón J Zaragozá
DOI:10.1016/s0040-4039(00)02339-x
日期:2001.2
An efficient diastereoselective synthesis of the spongian diterpenes (−)-spongian-16-oxo-17-al (1) and (−)-acetyldendrillol-1 (13) is described starting from (+)-podocarp-8(14)-13-one (6) via the ester-dialdehyde 11 as key intermediate. The absolute configuration at C-17 in synthetic compound 13 has conclusively been proved by NOE experiments.
Synthesis of C-17-Functionalized Spongiane Diterpenes: Diastereoselective Synthesis of (−)-Spongian-16-oxo-17-al, (−)-Acetyldendrillol-1, and (−)-Aplyroseol-14
作者:Manuel Arnó、Miguel A. González、Ramón J. Zaragozá
DOI:10.1021/jo026536f
日期:2003.2.1
The diastereoselective synthesis of spongiane diterpenes (-)-spongian-16-oxo-17-al 2, (-)-acetyldendrillol-1 15, and (-)-aplyroseol-14 16 has been completed efficiently via the common intermediate 14. Compound 14 was prepared in five synthetic steps from (+)-podocarp-8(14)-en-13-one 13, easily available from commercial (-)-abietic acid. The key steps in the syntheses were a regioselective reduction