An Update on Bioactive Plant Lignans

Abstract

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Supramolecular Self-Assembled Chaos: Polyphenolic Lignin’s Barrier to Cost-Effective Lignocellulosic Biofuels

“…Lignans ( Figure 1) are secondary metabolites that are also derived from phenylpropanoid units by dehydrodimerization, similar to lignin [69]. Lignans are distributed in various parts including roots, stems, leaves, seeds and fruits.…”

“…Flax is one of the richest sources of lignans. Lignans are present at elevated levels in plants with high fiber content such as wheat, oats, beans, lentils and broccoli [69,70]. The polymerization mechanism for generating lignans is similar to lignin and involves the coupling of monolignol radicals generated by peroxidase and/or laccase catalysis.…”

Antimicrobial Activity of Stereoisomers of Morinols A and B, Tetrahydropyran Sesquineolignans

“…Lignans and neolignans are large groups of natural products, because many types of bonding of the C6-C3 units have been found and each type has many kinds of oxidation. Although the many biological activities were have been reported for the lignans and neolignans, [5][6][7][8] the relationship between their stereochemistry and biological activity is not clear. Our efforts are continuing to collate a library for the structure and stereochemistry of lignans and neolignans.…”

Hepatoprotective Models and Various Natural Product Used in Hepatoprotective Agents: a Review

“…M. citrifolia fruit contains a number of phytochemicals, including lignans, oligo-and polysaccharides, flavonoids, iridoids, fatty acids, scopoletin, catechin, beta-sitosterol, damnacanthal ( Figure 95), and alkaloids. [136] The green fruit, leaves, and root/rhizomes were traditionally used in Polynesian cultures to treat menstrual cramps, bowel irregularities, diabetes, liver diseases, and urinary tract infections. [137] Cichorium intybus (Kasni)…”