M. Doi et al., Unique sodium-caged structure of a potent endothelin-1 inhibitor: crystal structure of BQ123 sodium salt, cyclo(-D-Trp-D-Asp(-)-Pro-D-Val-Leu-)centerdot Na+, CHEM COMMUN, (9), 2000, pp. 743-744
The crystal structure of cyclo(D-Trp-D-Asp(-)-Pro-D-Val-Leu-). Na+, a poten
t endothelin-1 antagonist, showed four conformational isomers and two Na+-c
aged structures in pairs.