
TY  - JOUR
A1  - Neve, Juliette E. 
A1  - McCool, Brian J. 
A1  - Bowden, Bruce F. 
T1  - Excavatolides N&#8211;T, New Briaran Diterpenes from the Western Australian Gorgonian <emph type="2">Briareum excavatum</emph>
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1999
VL  - 52
IS  - 5
SP  - 359
EP  - 366
KW  - 
UR  - https://doi.org/10.1071/CH98180 
N2  - A Western Australian sample of the gorgonian Briareum excavatum, collected at Rowley Shoals, afforded one known (10) and seven new briaran diterpenes (1), (3) and (5)&#8211;(9). Gross structures and relative stereochemistries were determined by spectroscopic methods and by comparison of spectral data with those of previously reported briarans. Support for a proposed conformation of the 10-membered ring (stabilized by hydrogen-bonding) to explain atypical 1H n.m.r. chemical shifts and coupling constants in (9) was obtained from energy minimization of the proposed structure by an ab initio density functional method. 
ER  -

