Fig. 2.
Key 1H–1H COSY (bold lines), HMBC (solid arrows), and NOESY (dashed arrows) correlations of 1–3
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.