
TY  - JOUR
A1  - Mander, LN 
A1  - Urech, R 
T1  - Studies on gibberellin synthesis. Preparation of advanced intermediates based on 1 H-2,10a-ethanophenanthrene
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1983
VL  - 36
IS  - 6
SP  - 1177
EP  - 1185
KW  - 
UR  - https://doi.org/10.1071/CH9831177 
N2  - The phenanthrenone (6) was converted into 1H-2,10a-ethanophenanthrene (16) by means of an acid-induced cyclization of &#945;-diazoketone (14). Protection and hydrogenation of (16), followed by reductive methylation of the resulting tetracyclic ester (20) gave the corresponding dihydro derivatives(22) or (23), potential precursors to gibberellic acid (8). 
ER  -

