Figure 3.
The selected key 1H–1H COSY (red lines) and HMBC (blue arrows, from 1H to 13C) correlations of compounds 1, 3, 5–8.
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.