
TY  - JOUR
A1  - Sterns, M 
A1  - Patrick, JM 
A1  - Patrick, VA 
A1  - White, AH 
T1  - Conformational Studies of Some Piperazine-2,5-Diones: Crystal Structures of Three Isomeric Forms of Methylanhydropicroroccellin (Derivative of a Lichen Diketopiperazine) and a Derivative Bromohydrin
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1989
VL  - 42
IS  - 3
SP  - 349
EP  - 364
KW  - 
UR  - https://doi.org/10.1071/CH9890349 
N2  - Single-crystal X-ray structure determinations have been carried out on three isomeric forms of the lichen diketopiperazine metabolite methylanhydropicroroccellin , C21H22N2O3, and a related bromohydrin , C20Hl9BrN2O3; all are based on a 6-benzyl-3-benzylidene-1,4- dimethylpiperazine-2,5-dione but differ in the substituents on the &#945; and &#946; carbons at position 6, enabling comparison of the resulting variation in conformation. 
ER  -

