Figure 3.
Chemical structures of four isosteroidal alkaloids: (a) Peimisine, (b) Sipeimine, (c) Peimine, (d) Peiminine.
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.