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    Natural Products

    Natural products refer to the constituents or metabolites of animals, plant extracts (abbreviated as plant extracts) or insects, marine organisms and microorganisms, as well as many endogenous chemical components in humans and animals, collectively referred to as natural products, of which the main Including proteins, peptides, amino acids, nucleic acids, various enzymes, monosaccharides, oligosaccharides, polysaccharides, glycoproteins, resins, colloids, lignin, vitamins, fats, fats, waxes, alkaloids, volatile oils, flavonoids, glycosides , Terpenes, phenylpropanoids, organic acids, phenols, quinones, lactones, steroids, tannic acids, antibiotics and other naturally occurring chemical components.

    Quinone Ring

    Quinone rings are a class of chemical components with quinoid structure in traditional Chinese medicine. They are mainly divided into four types: benzoquinone, naphthoquinone, phenanthrenequinone, and anthraquinone. Anthraquinone and its derivatives are particularly important in Chinese medicine. Quinone rings are widely distributed in plants.

    Xanthones

    Xanthones are widely found in plants in nature and are secondary metabolites of plants. Flavonoids are widely distributed in the plant kingdom. Xanthones are usually combined with sugar in plants to form glycosides, and a small part exists in the free state (aglycon). Most plants contain Xanthones, which play an important role in plant growth, development, flowering, fruiting, antibacterial and disease prevention.

    Phenylpropanoids

    Phenylpropanoid is a naturally-occurring compound consisting of a benzene ring and three linear carbon links (C6-C3 groups). It generally has a phenol structure and is a phenolic substance. In biosynthesis, most of these compounds are formed by shikimic acid through aromatic amino acids such as phenylalanine and tyrosine, through a series of reactions such as deamination and hydroxylation.

    Phenols

    Phenol, the general formula is ArOH, is a type of aromatic compound in which the hydrogen on the aromatic hydrocarbon ring is replaced by a hydroxyl group (—OH). The simplest phenols is phenol. Phenolic compounds refer to compounds produced by the substitution of hydrogen atoms on the benzene ring of aromatic hydrocarbons with hydroxyl groups, and can be divided into monohydric phenols and polyhydric phenols according to the number of hydroxyl groups contained in their molecules.
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