
TY  - JOUR
A1  - Cambie, RC 
A1  - Grigor, BA 
A1  - Hayward, RC 
A1  - Nielson, AJ 
T1  - Chemistry of the Podocarpaceae. XLIX. Isomerization of 12-Methoxy-19-norpodocarpatetraenes
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1974
VL  - 27
IS  - 9
SP  - 2017
EP  - 2024
KW  - 
UR  - https://doi.org/10.1071/CH9742017 
N2  - Methods for isomerization of the 12-methoxy-19-norpodocarpatetraene mixture obtained from oxidative decarboxylation of 12-methoxypodocarpa-8,11,13-trien-19-oic acid (1) with lead tetraacetate have been examined. Acid-catalysed isomerization gives a mixture of the endocyclic isomers (11) and (19) while iodine-catalysed isomerization gives a mixture enriched in the isomer (19) to the extent of 80%. Metal-catalysed decarbonylation of the acid chloride (6) and oxidative decarboxylation of the acetoxy acid (7) have also been examined. 
ER  -

