Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Chemical structure of the pure compounds identified from P. quadrangularis (Pq): 5,4′-dihydroxy-7,3′-dimethoxyflavanone (1); 5,3′,4′-trihydroxy-7-methoxyflavanone (7-methoxy-eriodictyol) (2); 7-hydroxy-6-methoxy-2H-1-benzopyran-2-one, (scopoletin, 3); p-coumaroyloxytremetone, (4); 5-hydroxy-7,3′,4′-trimethoxyflavanone (5); 3,5,4′-trihydroxy-7,8,3′-trimethoxyflavone (6); and 5,4′-dihydroxy-3,7,8,3′-tetramethoxyflavone (ternatin, 7).
