Classification Term: 3863
P-benzoquinones (ontology term: CHEMONTID:0002494)
Benzoquinones where the two C=O groups are attached at the 1- and 4-positions, respectively." []
found 23 associated metabolites at no_class-level_9 metabolite taxonomy ontology rank level.
Ancestor: Benzoquinones
Child Taxonomies: P-toluquinones
Quinone
Quinone is also called 1,4-benzoquinone or cyclohexadienedione. Quinones are oxidized derivatives of aromatic compounds and are often readily made from reactive aromatic compounds with electron-donating substituents such as phenols and catechols, which increase the nucleophilicity of the ring and contributes to the large redox potential needed to break aromaticity. Derivatives of quinones are common constituents of biologically relevant molecules. Some serve as electron acceptors in electron transport chains such as those in photosynthesis (plastoquinone, phylloquinone), and aerobic respiration (ubiquinone). Quinone is a common constituent of biologically relevant molecules (e.g. Vitamin K1 is phylloquinone). A natural example of quinones as oxidizing agents is the spray of bombardier beetles. Hydroquinone is reacted with hydrogen peroxide to produce a fiery blast of steam, a strong deterent in the animal world. 1,4-Benzoquinone, commonly known as para-quinone or quinone, is a chemical compound with the formula C6H4O2. 1,4-Benzoquinone is found in barley, olive, and anise. D019995 - Laboratory Chemicals > D007202 - Indicators and Reagents
2,6-Dimethoxy-1,4-benzoquinone
2,6-Dimethoxy-1,4-benzoquinone is a natural product found in Diospyros eriantha, Iris milesii, and other organisms with data available. 2,6-Dimethoxyquinone is a methoxy-substituted benzoquinone and bioactive compound found in fermented wheat germ extracts, with potential antineoplastic and immune-enhancing activity. 2,6-Dimethoxyquinone (2,6-DMBQ) inhibits anaerobic glycolysis thereby preventing cellular metabolism and inducing apoptosis. As cancer cells use the anaerobic glycolysis pathway to metabolize glucose and cancer cells proliferate at an increased rate as compared to normal, healthy cells, this agent is specifically cytotoxic towards cancer cells. In addition, 2,6-DMBQ exerts immune-enhancing effects by increasing natural killer (NK) cell and T-cell activity against cancer cells. See also: Acai fruit pulp (part of). 2,6-Dimethoxy-1,4-benzoquinone is found in common wheat. 2,6-Dimethoxy-1,4-benzoquinone is a constituent of bark of Phyllostachys heterocycla var. pubescens (moso bamboo) Constituent of bark of Phyllostachys heterocycla variety pubescens (moso bamboo). 2,6-Dimethoxy-1,4-benzoquinone is found in green vegetables and common wheat. 2,6-Dimethoxy-1,4-benzoquinone, a natural phytochemical, is a known haustorial inducing factor. 2,6-Dimethoxy-1,4-benzoquinone exerts anti-cancer, anti-inflammatory, anti-adipogenic, antibacterial, and antimalaria effects[1]. 2,6-Dimethoxy-1,4-benzoquinone, a natural phytochemical, is a known haustorial inducing factor. 2,6-Dimethoxy-1,4-benzoquinone exerts anti-cancer, anti-inflammatory, anti-adipogenic, antibacterial, and antimalaria effects[1].
Embelin
Embelin (Embelic acid), a potent, nonpeptidic XIAP inhibitor (IC50=4.1 μM), inhibits cell growth, induces apoptosis, and activates caspase-9 in prostate cancer cells with high levels of XIAP. Embelin blocks NF-kappaB signaling pathway leading to suppression of NF-kappaB-regulated antiapoptotic and metastatic gene products. Embelin also induces autophagic and apoptotic cell death in human oral squamous cell carcinoma cells[1][2][3]. Embelin (Embelic acid), a potent, nonpeptidic XIAP inhibitor (IC50=4.1 μM), inhibits cell growth, induces apoptosis, and activates caspase-9 in prostate cancer cells with high levels of XIAP. Embelin blocks NF-kappaB signaling pathway leading to suppression of NF-kappaB-regulated antiapoptotic and metastatic gene products. Embelin also induces autophagic and apoptotic cell death in human oral squamous cell carcinoma cells[1][2][3].
5-O-Methylembelin
5-O-Methylembelin is a constituent of Myrsine africana (cape myrtle). Constituent of Myrsine africana (cape myrtle) 5-O-Methylembelin is a natural isocoumarin that inhibits PCSK9, inducible degrader of the low-density lipoprotein receptor (IDLR), and sterol regulatory element binding protein 2 (SREBP2) mRNA expression[1].
Aziridyl benzoquinone
D009676 - Noxae > D009153 - Mutagens D000970 - Antineoplastic Agents
TRIAZIQUONE
L - Antineoplastic and immunomodulating agents > L01 - Antineoplastic agents > L01A - Alkylating agents > L01AC - Ethylene imines C274 - Antineoplastic Agent > C186664 - Cytotoxic Chemotherapeutic Agent > C2842 - DNA Binding Agent D009676 - Noxae > D000477 - Alkylating Agents D000970 - Antineoplastic Agents
Thymoquinone
Thymoquinone is a member of the class of 1,4-benzoquinones that is 1,4-bezoquinone in which the hydrogens at positions 2 and 5 are replaced by methyl and isopropyl groups, respectively. It is a natural compound isolated from Nigella sativa which has demonstrated promising chemotherapeutic activity. It has a role as an anti-inflammatory agent, an antioxidant, an adjuvant, an antineoplastic agent, a cardioprotective agent, an antidepressant and a plant metabolite. Thymoquinone is a natural compound with widespread protective effects, including anti-oxidative, anti-inflammatory, immunomodulatory, anti-cancer, and anti-microbial. Thymoquinone is a natural product found in Ayapana triplinervis, Tetraclinis articulata, and other organisms with data available. A member of the class of 1,4-benzoquinones that is 1,4-bezoquinone in which the hydrogens at positions 2 and 5 are replaced by methyl and isopropyl groups, respectively. It is a natural compound isolated from Nigella sativa which has demonstrated promising chemotherapeutic activity. Major constituent of seed oil of black cumin, Nigella sativa (24\\\%). Thymoquinone is found in herbs and spices and winter savory. Thymoquinone is found in herbs and spices. Thymoquinone is a major constituent of seed oil of black cumin, Nigella sativa (24\\\% COVID info from DrugBank Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS Thymoquinone is an orally active natural product isolated from N. sativa Thymoquinone down-regulates the VEGFR2-PI3K-Akt pathway. Thymoquinone has antioxidant, anti-inflammatory, anticancer, antiviral, anticonvulsant, antifungal, antiviral, antiangiogenic activity and hepatoprotective effects. Thymoquinone can be used to study Alzheimer's disease, cancer, cardiovascular disease, infectious disease and inflammation [1][2][3][4][5].
Physalin L
Physalin L is a natural product found in Alkekengi officinarum var. franchetii, Physalis lagascae, and Physalis minima with data available. Physalin L is found in fruits. Physalin L is a constituent of Physalis alkekengi (winter cherry)
2-Methoxy-1,4-benzoquinone
2-Methoxy-1,4-benzoquinone is found in fruits. 2-Methoxy-1,4-benzoquinone is isolated from fruits of Diospyros kaki (Japanese persimmon
Sorgoleone 358
Sorgoleone 358 is found in cereals and cereal products. Sorgoleone 358 is a constituent of the etiolated seedlings of Sorghum bicolor (sorghum). Constituent of the etiolated seedlings of Sorghum bicolor (sorghum). Sorgoleone 358 is found in cereals and cereal products and sorghum.
5-Ethoxysorgoleone 358
5-Ethoxysorgoleone 358 is found in cereals and cereal products. 5-Ethoxysorgoleone 358 is a constituent of Sorghum bicolor (sorghum). Constituent of Sorghum bicolor (sorghum). 5-Ethoxysorgoleone 358 is found in cereals and cereal products.
Thermophillin
Thermophillin is found in herbs and spices. Thermophillin is isolated from Acorus calamus (sweet flag) Disulfiram produces a sensitivity to alcohol which results in a highly unpleasant reaction when the patient under treatment ingests even small amounts of alcohol. Disulfiram blocks the oxidation of alcohol at the acetaldehyde stage during alcohol metabolism following disulfiram intake, the concentration of acetaldehyde occurring in the blood may be 5 to 10 times higher than that found during metabolism of the same amount of alcohol alone. Accumulation of acetaldehyde in the blood produces a complex of highly unpleasant symptoms referred to hereinafter as the disulfiram-alcohol reaction. This reaction, which is proportional to the dosage of both disulfiram and alcohol, will persist as long as alcohol is being metabolized. Disulfiram does not appear to influence the rate of alcohol elimination from the body. Prolonged administration of disulfiram does not produce toleranc Isolated from Acorus calamus (sweet flag)
Benzoquinoneacetic acid
Benzoquinoneacetic acid (BQA) is an oxidized form of homogentisic acid. The oxidation of homogentisic acid to BQA is catalyzed by the enzyme polyphenol oxidase. BQA is secreted in high quantities in the urine of patients suffering from cyanosis caused by vitamin C deficiency (Ella H. Fishberg, J. Biol. Chem., Jan 1948; 172: 155 - 163). Cyanosis is the bluish colouration of the skin due to the presence of deoxygenated hemoglobin in blood vessels near the skin surface. When present in sufficiently high levels, BQA can function as an osteotoxin and a renal toxin. An osteotoxin is a substance that causes damage to bones and/or joints. A renal toxin causes damage to the kidneys. Chronically high levels of BQA are associated with alkaptonuria (OMIM: 203500), an inborn error of metabolism. Alkaptonuria is a rare inherited genetic disorder in which the body cannot process the amino acids phenylalanine and tyrosine. It is caused by a mutation in the enzyme homogentisate 1,2-dioxygenase (EC 1.13.11.5), which leads to an accumulation of both homogentisic acid and BQA in the blood and tissues. When excreted in the urine, these compounds give it an unusually dark color. The accumulating BQA causes damage to cartilage (ochronosis, leading to osteoarthritis) and heart valves as well as precipitating as kidney stones and stones in other organs. More specifically, BQA can form polymers that resemble the dark skin pigment melanin. These are deposited in collagen, especially in tissues such as cartilage. This process is called ochronosis (as the tissue looks ochre); ochronotic tissue is stiffened and unusually brittle, impairing its normal function and causing damage. Benzoquinoneacetic acid is an oxidized phase of the oxidation-reduction system homogentisic-benzoquinoneacetic acid. This compound is secreted in large quantities in the urine of patients suffering from cyanosis. Cyanosis is the bluish coloration of the skin due to the presence of deoxygenated hemoglobin in blood vessels near the skin surface. (Ella H. Fishberg, J. Biol. Chem., Jan 1948; 172: 155 - 163; Wikipedia) [HMDB]
2,3-Dichloro-5,6-dicyano-1,4-benzoquinone
Carboquone
L - Antineoplastic and immunomodulating agents > L01 - Antineoplastic agents > L01A - Alkylating agents > L01AC - Ethylene imines C274 - Antineoplastic Agent > C186664 - Cytotoxic Chemotherapeutic Agent > C2842 - DNA Binding Agent D009676 - Noxae > D000477 - Alkylating Agents D000970 - Antineoplastic Agents
2,3,5-Trimethyl-6-(3-pyridylmethyl)-1,4-benzoquinone
Diaziquone
Inproquone
C274 - Antineoplastic Agent > C186664 - Cytotoxic Chemotherapeutic Agent > C2842 - DNA Binding Agent
Vulgarol
Vulgarol, also known as 2,5-dihydroxy-3,6-diphenyl-1,4-benzoquinone, is a member of the class of compounds known as P-benzoquinones. P-benzoquinones are benzoquinones where the two C=O groups are attached at the 1- and 4-positions, respectively. Vulgarol is practically insoluble (in water) and a very weakly acidic compound (based on its pKa). Vulgarol can be found in mugwort, which makes vulgarol a potential biomarker for the consumption of this food product.
Potassium salts of fatty acids
It is used as a food additive .
