The enantioselective synthesis of (-)-borjatriol ((14R)-8,13-epoxylabdane-7-beta,14,15-triol (1)) from (+)-podocarp-8(14)-en-13-one (2) is described using as a key step the regioselective intramolecular epoxide ring opening of 13.
The enantioselective synthesis of (-)-borjatriol ((14R)-8,13-epoxylabdane-7-beta,14,15-triol (1)) from (+)-podocarp-8(14)-en-13-one (2) is described using as a key step the regioselective intramolecular epoxide ring opening of 13.
Podocarpane-to-spongian skeleton conversion. Synthesis of (+)-isoagatholactone and (–)-spongia-13(16),14-diene
作者:Antonio Abad、Consuelo Agulló、Manuel Arnó、M. Luisa Marín、Ramón J. Zaragozá
DOI:10.1039/p19960002193
日期:——
A stereoselective synthesis of the spongian diterpenes (+)-isoagatholactone 5 and (-)-spongia-13(16),14-diene 6 is achieved starting from (+)-podocarp-8(14)-en-13-one 3 (R = H) via the common intermediate beta-hydroxy ketone 13.
KATSUMURA, SHIGEO;KIMURA, AKIHIKO;ISOE, SACHIHIKO, TETRAHEDRON, 45,(1989) N, C. 1337-1346