Fig. 5 in Catecholic alkaloid sulfonates and aromatic nitro compounds from Portulaca oleracea and screening of their anti-inflammatory and anti-microbial activities

Fig. 5. Possible biosynthetic pathway for the nitro derivatives, catecholic alkaloids and their sulfonates from P. oleracea (DDC: dopa decarboxylase; RNS: reactive nitrogen species; TH: tyrosine hydroxylase).