Two Alkaloids Isolated from Portulaca oleracea L. and their Activities

Abstract

Two alkaloids, identified as tardioxopiperazine B and variecolorin G, were for the first time
isolated from Portulaca oleracea L., which presented antiacetylcholinesterase activity with IC50 of 43.23
and 47.22 μg/mL, respectively. In addition, the anti-inflammatory effects of tardioxopiperazine B on
lipopolysaccharide-stimulated macrophages was also investigated.