NCBI Taxonomy: 94219
Dendrobium nobile (ncbi_taxid: 94219)
found 54 associated metabolites at species taxonomy rank level.
Ancestor: Dendrobium
Child Taxonomies: none taxonomy data.
Naringenin
Naringenin is a flavorless, colorless flavanone, a type of flavonoid. It is the predominant flavanone in grapefruit, and is found in a variety of fruits and herbs. Naringenin has the skeleton structure of a flavanone with three hydroxy groups at the 4, 5, and 7 carbons. It may be found both in the aglycol form, naringenin, or in its glycosidic form, naringin, which has the addition of the disaccharide neohesperidose attached via a glycosidic linkage at carbon 7. Naringenin (not to be confused with naringin) is a flavanone that is considered to have a bioactive effect on human health as antioxidant, free radical scavenger, antiinflammatory, carbohydrate metabolism promoter, immunity system modulater. This substance has also been shown to repair DNA. Scientists exposed cells to 80 micomoles of naringenin per liter, for 24 hours, and found that the amount of hydroxyl damage to the DNA was reduced by 24 percent in that very short period of time. Unfortunately, this bioflavonoid is difficult to absorb on oral ingestion. Only 15\\\\\\\% of ingested naringenin will get absorbed, in the human gastrointestinal tract, in the best case scenario. A full glass of orange juice will supply about enough naringenin to achieve a concentration of about 0.5 micromoles per liter. Naringenin is a biomarker for the consumption of citrus fruits. (S)-naringenin is the (S)-enantiomer of naringenin. It has a role as an expectorant and a plant metabolite. It is a naringenin and a (2S)-flavan-4-one. It is a conjugate acid of a (S)-naringenin(1-). It is an enantiomer of a (R)-naringenin. Naringenin is a natural product found in Elaeodendron croceum, Garcinia multiflora, and other organisms with data available. See also: Naringin (related). Most widely distributed flavanone. Citrus fruits (grapefruit, oranges and pummelos) are especially good sources. Glycosides also widely distributed The (S)-enantiomer of naringenin. [Raw Data] CB070_Naringenin_pos_20eV_CB000030.txt [Raw Data] CB070_Naringenin_pos_10eV_CB000030.txt [Raw Data] CB070_Naringenin_pos_40eV_CB000030.txt [Raw Data] CB070_Naringenin_pos_30eV_CB000030.txt [Raw Data] CB070_Naringenin_pos_50eV_CB000030.txt [Raw Data] CB070_Naringenin_neg_10eV_000021.txt [Raw Data] CB070_Naringenin_neg_30eV_000021.txt [Raw Data] CB070_Naringenin_neg_50eV_000021.txt [Raw Data] CB070_Naringenin_neg_20eV_000021.txt [Raw Data] CB070_Naringenin_neg_40eV_000021.txt (±)-Naringenin. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. https://commonchemistry.cas.org/detail?cas_rn=67604-48-2 (retrieved 2024-07-09) (CAS RN: 67604-48-2). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0). (±)-Naringenin is a naturally-occurring flavonoid. (±)-Naringenin displays vasorelaxant effect on endothelium-denuded vessels via the activation of BKCa channels in myocytes[1]. (±)-Naringenin is a naturally-occurring flavonoid. (±)-Naringenin displays vasorelaxant effect on endothelium-denuded vessels via the activation of BKCa channels in myocytes[1]. Naringenin is the predominant flavanone in Citrus reticulata Blanco; displays strong anti-inflammatory and antioxidant activities. Naringenin has anti-dengue virus (DENV) activity. Naringenin is the predominant flavanone in Citrus reticulata Blanco; displays strong anti-inflammatory and antioxidant activities. Naringenin has anti-dengue virus (DENV) activity.
Evodiamine
Evodiamine is a member of beta-carbolines. Evodiamine is a natural product found in Vepris soyauxii, Cryptocarya, and other organisms with data available. Origin: Plant; Formula(Parent): C19H17N3O; Bottle Name:Evodiamine; PRIME Parent Name:Evodiamine; PRIME in-house No.:V0296; SubCategory_DNP: Monoterpenoid indole alkaloids, Indoloquinolizidine alkaloids, Indole alkaloids Formula(Parent): C19H17N3O; Bottle Name:Evodiamine; Origin: Plant; PRIME Parent Name:Evodiamine; PRIME in-house No.:V0296; SubCategory_DNP: Monoterpenoid indole alkaloids, Indoloquinolizidine alkaloids, Indole alkaloids Annotation level-1 (±)-Evodiamine, a quinazolinocarboline alkaloid, is a Top1 inhibitor. Evodiamine exhibits anti-inflammatory, antiobesity, and antitumor effects. (±)-Evodiamine inhibits the proliferation of a wide variety of tumor cells by inducing their apoptosis[1]. Evodiamine is an alkaloid isolated from the fruit of Evodia rutaecarpa Bentham with diverse biological activities including anti-inflammatory, anti-obesity, and antitumor. Evodiamine is an alkaloid isolated from the fruit of Evodia rutaecarpa Bentham with diverse biological activities including anti-inflammatory, anti-obesity, and antitumor.
Protocatechuic acid
Protocatechuic acid, also known as protocatechuate or 3,4-dihydroxybenzoate, belongs to the class of organic compounds known as hydroxybenzoic acid derivatives. Hydroxybenzoic acid derivatives are compounds containing a hydroxybenzoic acid (or a derivative), which is a benzene ring bearing a carboxyl and a hydroxyl groups. The enzyme protocatechuate 3,4-dioxygenase uses 3,4-dihydroxybenzoate and O2 to produce 3-carboxy-cis,cis-muconate. Protocatechuic acid is a drug. In the analogous hardening of the cockroach ootheca, the phenolic substance concerned is protocatechuic acid. Protocatechuic acid is a mild, balsamic, and phenolic tasting compound. Outside of the human body, protocatechuic acid is found, on average, in the highest concentration in a few different foods, such as garden onions, cocoa powders, and star anises and in a lower concentration in lentils, liquors, and red raspberries. Protocatechuic acid has also been detected, but not quantified in several different foods, such as cloud ear fungus, american pokeweeds, common mushrooms, fruits, and feijoa. This could make protocatechuic acid a potential biomarker for the consumption of these foods. It is also found in Allium cepa (17,540 ppm). It is a major metabolite of antioxidant polyphenols found in green tea. Similarly, PCA was reported to increase proliferation and inhibit apoptosis of neural stem cells. In vitro testing documented antioxidant and anti-inflammatory activity of PCA, while liver protection in vivo was measured by chemical markers and histological assessment. 3,4-dihydroxybenzoic acid, also known as protocatechuic acid or 4-carboxy-1,2-dihydroxybenzene, belongs to hydroxybenzoic acid derivatives class of compounds. Those are compounds containing a hydroxybenzoic acid (or a derivative), which is a benzene ring bearing a carboxyl and a hydroxyl groups. 3,4-dihydroxybenzoic acid is soluble (in water) and a weakly acidic compound (based on its pKa). 3,4-dihydroxybenzoic acid can be synthesized from benzoic acid. 3,4-dihydroxybenzoic acid is also a parent compound for other transformation products, including but not limited to, methyl 3,4-dihydroxybenzoate, ethyl 3,4-dihydroxybenzoate, and 1-(3,4-dihydroxybenzoyl)-beta-D-glucopyranose. 3,4-dihydroxybenzoic acid is a mild, balsamic, and phenolic tasting compound and can be found in a number of food items such as white mustard, grape wine, abalone, and asian pear, which makes 3,4-dihydroxybenzoic acid a potential biomarker for the consumption of these food products. 3,4-dihydroxybenzoic acid can be found primarily in blood, feces, and urine, as well as in human fibroblasts and testes tissues. 3,4-dihydroxybenzoic acid exists in all eukaryotes, ranging from yeast to humans. Protocatechuic acid (PCA) is a dihydroxybenzoic acid, a type of phenolic acid. It is a major metabolite of antioxidant polyphenols found in green tea. It has mixed effects on normal and cancer cells in in vitro and in vivo studies . 3,4-dihydroxybenzoic acid is a dihydroxybenzoic acid in which the hydroxy groups are located at positions 3 and 4. It has a role as a human xenobiotic metabolite, a plant metabolite, an antineoplastic agent, an EC 1.1.1.25 (shikimate dehydrogenase) inhibitor and an EC 1.14.11.2 (procollagen-proline dioxygenase) inhibitor. It is a member of catechols and a dihydroxybenzoic acid. It is functionally related to a benzoic acid. It is a conjugate acid of a 3,4-dihydroxybenzoate. 3,4-Dihydroxybenzoic acid is a natural product found in Visnea mocanera, Amomum subulatum, and other organisms with data available. Protocatechuic acid is a metabolite found in or produced by Saccharomyces cerevisiae. See also: Black Cohosh (part of); Vaccinium myrtillus Leaf (part of); Menyanthes trifoliata leaf (part of) ... View More ... A dihydroxybenzoic acid in which the hydroxy groups are located at positions 3 and 4. Protocatechuic acid. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. https://commonchemistry.cas.org/detail?cas_rn=99-50-3 (retrieved 2024-06-29) (CAS RN: 99-50-3). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0). Protocatechuic acid is a phenolic compound which exhibits neuroprotective effect. Protocatechuic acid is a phenolic compound which exhibits neuroprotective effect.
Dendrobine
Dendrobine is a member of indoles. Dendroban-12-one is a natural product found in Dendrobium chrysanthum, Dendrobium linawianum, and Dendrobium nobile with data available. Dendrobine is an alkaloid isolated from Dendrobium nobile. Dendrobine possesses antiviral activity against influenza A viruses, with IC50s of 3.39 μM, 2.16 μM and 5.32 μM for A/FM-1/1/47 (H1N1), A/Puerto Rico/8/34 H274Y (H1N1) and A/Aichi/2/68 (H3N2), respectively[1]. Dendrobine is an alkaloid isolated from Dendrobium nobile. Dendrobine possesses antiviral activity against influenza A viruses, with IC50s of 3.39 μM, 2.16 μM and 5.32 μM for A/FM-1/1/47 (H1N1), A/Puerto Rico/8/34 H274Y (H1N1) and A/Aichi/2/68 (H3N2), respectively[1].
Nookatone
Nootkatone is a natural organic compound and is the most important and expensive aromatic of grapefruit. It is a sesquiterpene and a ketone. Nootkatone was previously thought to be one of the main chemical components of the smell and flavour of grapefruits. In its solid form it is usually found as crystals. As a liquid, it is viscous and yellow. Nootkatone is typically extracted from grapefruit, but can also be manufactured with genetically modified organisms, or through the chemical or biochemical oxidation of valencene. It is also found in Alaska yellow cedar trees and vetiver grass. (+)-nootkatone is a sesquiterpenoid that is 4,4a,5,6,7,8-hexahydronaphthalen-2(3H)-one which is substituted by methyl groups at positions 4 and 4a, and by an isopropenyl group at position 6 (the 4R,4aS,6R stereoisomer). It has a role as a plant metabolite, a fragrance and an insect repellent. It is a sesquiterpenoid, an enone and a carbobicyclic compound. Nootkatone is a natural product found in Teucrium asiaticum, Teucrium oxylepis, and other organisms with data available. Constituent of grapefruit oil and juice. Flavouring ingredient. Nootkatone is found in many foods, some of which are citrus, sweet orange, lime, and lemon. Nootkatone is an organic compound, a sesquiterpenoid, which means that it is a C15 derivative that also contains an oxygen-containing functional group (a ketone). It is the most valuable aroma compound of grapefruit.[2] Nootkatone was originally isolated from the wood of the Alaskan yellow cedar, Cupressus nootkatensis. The species name, nootkatensis, is derived from the language of the Nuu-Chah-Nulth people of Canada (formerly referred to as the Nootka people).[3] Nootkatone, a neuroprotective agent from Vitis vinifera, has antioxidant and anti-inflammatory effects[1]. Nootkatone improves cognitive impairment in lipopolysaccharide-induced mouse model of Alzheimer's disease[2]. Nootkatone, a neuroprotective agent from Vitis vinifera, has antioxidant and anti-inflammatory effects[1]. Nootkatone improves cognitive impairment in lipopolysaccharide-induced mouse model of Alzheimer's disease[2].
Nodakenetic
Nodakenetic, also known as (-)-marmesin or marmesin, (R)-isomer, is a member of the class of compounds known as psoralens. Psoralens are organic compounds containing a psoralen moiety, which consists of a furan fused to a chromenone to for 7H-furo[3,2-g]chromen-7-one. Nodakenetic is practically insoluble (in water) and a very weakly acidic compound (based on its pKa). Nodakenetic can be found in wild celery, which makes nodakenetic a potential biomarker for the consumption of this food product. Nodakenetin is a marmesin with R-configuration. It has a role as a plant metabolite, a rat metabolite and a xenobiotic metabolite. It is an enantiomer of a (+)-marmesin. Nodakenetin is a natural product found in Zanthoxylum beecheyanum, Melicope barbigera, and other organisms with data available. Nodakenetin, isolated from Angelica decursiva, possesses antioxidant anti-inflammatory activities. Nodakenetin has the potential to be an antiarthritic and nerve tonic[1][2]. Nodakenetin, isolated from Angelica decursiva, possesses antioxidant anti-inflammatory activities. Nodakenetin has the potential to be an antiarthritic and nerve tonic[1][2]. S-(+)-Marmesin is a natural coumarin, exhibiting COX-2/5-LOX dual inhibitory activity. S-(+)-Marmesin is a natural coumarin, exhibiting COX-2/5-LOX dual inhibitory activity. S-(+)-Marmesin is a natural coumarin, exhibiting COX-2/5-LOX dual inhibitory activity.
beta-Sitosterol 3-O-beta-D-galactopyranoside
Daucosterol is a steroid saponin that is sitosterol attached to a beta-D-glucopyranosyl residue at position 3 via a glycosidic linkage. It has bee isolated from Panax japonicus var. major and Breynia fruticosa. It has a role as a plant metabolite. It is a steroid saponin, a beta-D-glucoside and a monosaccharide derivative. It is functionally related to a sitosterol. It derives from a hydride of a stigmastane. Sitogluside is a natural product found in Ophiopogon intermedius, Ophiopogon jaburan, and other organisms with data available. beta-Sitosterol 3-O-beta-D-galactopyranoside is found in herbs and spices. beta-Sitosterol 3-O-beta-D-galactopyranoside is a constituent of Hibiscus sabdariffa (roselle) leaves. C308 - Immunotherapeutic Agent Daucosterol is a natural sterol compound. Daucosterol is a natural sterol compound.
(+)-Syringaresinol
(+)-syringaresinol is a member of the class of compounds known as furanoid lignans. Furanoid lignans are lignans with a structure that contains either a tetrahydrofuran ring, a furan ring, or a furofuan ring system, that arises from the joining of the two phenylpropanoid units (+)-syringaresinol is practically insoluble (in water) and a very weakly acidic compound (based on its pKa). (+)-syringaresinol can be found in a number of food items such as radish (variety), grape wine, oat, and ginkgo nuts, which makes (+)-syringaresinol a potential biomarker for the consumption of these food products.
Lusianthridin
7-methoxy-9,10-dihydrophenanthrene-2,5-diol is a dihydrophenanthrene. 7-Methoxy-9,10-dihydrophenanthrene-2,5-diol is a natural product found in Dendrobium loddigesii, Pleione bulbocodioides, and other organisms with data available.
(+)-7-epi-Syringaresinol 4'-glucoside
(+)-7-epi-Syringaresinol 4-glucoside is found in tea. (+)-7-epi-Syringaresinol 4-glucoside is a constituent of the roots of Eleutherococcus senticosus (Siberian ginseng). Constituent of the roots of Eleutherococcus senticosus (Siberian ginseng). (+)-7-epi-Syringaresinol 4-glucoside is found in tea. Acanthoside B is a potential bioactive lignan with anti-inflammatory and anti-amnesic activities. Acanthoside B can be used for alzheimer's disease and lung inflammation research[1] Acanthoside B is a potential bioactive lignan with anti-inflammatory and anti-amnesic activities. Acanthoside B can be used for alzheimer's disease and lung inflammation research[1]
Batatasin III
Batatasin III is a stilbenoid. batatasin III is a natural product found in Bulbophyllum reptans, Cymbidium aloifolium, and other organisms with data available. Batatasin III is found in root vegetables. Batatasin III is a constituent of Dioscorea batatas (Chinese yam) Batatasin III, a stilbenoid, inhibits cancer migration and invasion by suppressing epithelial to mesenchymal transition (EMT) and FAK-AKT signals. Batatasin III has anti-cancer activities[1]. Batatasin III, a stilbenoid, inhibits cancer migration and invasion by suppressing epithelial to mesenchymal transition (EMT) and FAK-AKT signals. Batatasin III has anti-cancer activities[1]. Batatasin III, a stilbenoid, inhibits cancer migration and invasion by suppressing epithelial to mesenchymal transition (EMT) and FAK-AKT signals. Batatasin III has anti-cancer activities[1].
Lirioresinol A
Syringaresinol is a lignan that is 7,9:7,9-diepoxylignane substituted by hydroxy groups at positions 4 and 4 and methoxy groups at positions 3, 3, 5 and 5 respectively. It has a role as a plant metabolite. It is a lignan, a polyphenol, an aromatic ether, a furofuran and a polyether. Syringaresinol is a natural product found in Dracaena draco, Ficus septica, and other organisms with data available. A lignan that is 7,9:7,9-diepoxylignane substituted by hydroxy groups at positions 4 and 4 and methoxy groups at positions 3, 3, 5 and 5 respectively. Isolated from Artemisia absinthium (wormwood). Lirioresinol A is found in alcoholic beverages and herbs and spices. Lirioresinol A is found in alcoholic beverages. Lirioresinol A is isolated from Artemisia absinthium (wormwood).
Naringenin
Naringenin is a trihydroxyflavanone that is flavanone substituted by hydroxy groups at positions 5, 6 and 4. It is a trihydroxyflavanone and a member of 4-hydroxyflavanones. 5,7-Dihydroxy-2-(4-hydroxyphenyl)chroman-4-one is a natural product found in Prunus mume, Helichrysum cephaloideum, and other organisms with data available. D006730 - Hormones, Hormone Substitutes, and Hormone Antagonists > D006727 - Hormone Antagonists > D004965 - Estrogen Antagonists A trihydroxyflavanone that is flavanone substituted by hydroxy groups at positions 5, 6 and 4. D005765 - Gastrointestinal Agents > D000897 - Anti-Ulcer Agents (±)-Naringenin is a naturally-occurring flavonoid. (±)-Naringenin displays vasorelaxant effect on endothelium-denuded vessels via the activation of BKCa channels in myocytes[1]. (±)-Naringenin is a naturally-occurring flavonoid. (±)-Naringenin displays vasorelaxant effect on endothelium-denuded vessels via the activation of BKCa channels in myocytes[1]. Naringenin is the predominant flavanone in Citrus reticulata Blanco; displays strong anti-inflammatory and antioxidant activities. Naringenin has anti-dengue virus (DENV) activity. Naringenin is the predominant flavanone in Citrus reticulata Blanco; displays strong anti-inflammatory and antioxidant activities. Naringenin has anti-dengue virus (DENV) activity.
Coelonin
4-Methoxy-9,10-dihydrophenanthrene-2,7-diol is a natural product found in Bulbophyllum reptans, Cymbidium aloifolium, and other organisms with data available.
Syringaresinol
(+)-syringaresinol is the (7alpha,7alpha,8alpha,8alpha)-stereoisomer of syringaresinol. It has a role as an antineoplastic agent. It is an enantiomer of a (-)-syringaresinol. (+)-Syringaresinol is a natural product found in Dracaena draco, Diospyros eriantha, and other organisms with data available. See also: Acai fruit pulp (part of). The (7alpha,7alpha,8alpha,8alpha)-stereoisomer of syringaresinol.
(+)-7-epi-Syringaresinol 4'-glucoside
(+)-7-epi-Syringaresinol 4-glucoside is a lignan and a glycoside. (+)-7-epi-Syringaresinol 4-glucoside is a natural product found in Strychnos axillaris, Cistanche tubulosa, and other organisms with data available. (+)-7-epi-Syringaresinol 4-glucoside is found in tea. (+)-7-epi-Syringaresinol 4-glucoside is a constituent of the roots of Eleutherococcus senticosus (Siberian ginseng). Constituent of the roots of Eleutherococcus senticosus (Siberian ginseng). (+)-7-epi-Syringaresinol 4-glucoside is found in tea.
nodakenetin
Nodakenetin, isolated from Angelica decursiva, possesses antioxidant anti-inflammatory activities. Nodakenetin has the potential to be an antiarthritic and nerve tonic[1][2]. Nodakenetin, isolated from Angelica decursiva, possesses antioxidant anti-inflammatory activities. Nodakenetin has the potential to be an antiarthritic and nerve tonic[1][2].
syringaresinol
Asahina
D006730 - Hormones, Hormone Substitutes, and Hormone Antagonists > D006727 - Hormone Antagonists > D004965 - Estrogen Antagonists D005765 - Gastrointestinal Agents > D000897 - Anti-Ulcer Agents (±)-Naringenin is a naturally-occurring flavonoid. (±)-Naringenin displays vasorelaxant effect on endothelium-denuded vessels via the activation of BKCa channels in myocytes[1]. (±)-Naringenin is a naturally-occurring flavonoid. (±)-Naringenin displays vasorelaxant effect on endothelium-denuded vessels via the activation of BKCa channels in myocytes[1]. Naringenin is the predominant flavanone in Citrus reticulata Blanco; displays strong anti-inflammatory and antioxidant activities. Naringenin has anti-dengue virus (DENV) activity. Naringenin is the predominant flavanone in Citrus reticulata Blanco; displays strong anti-inflammatory and antioxidant activities. Naringenin has anti-dengue virus (DENV) activity.
beta-Sitosterol 3-O-beta-D-galactopyranoside
99-50-3
D020011 - Protective Agents > D016588 - Anticarcinogenic Agents D000970 - Antineoplastic Agents Protocatechuic acid is a phenolic compound which exhibits neuroprotective effect. Protocatechuic acid is a phenolic compound which exhibits neuroprotective effect.
Marmesin
Nodakenetin is a marmesin with R-configuration. It has a role as a plant metabolite, a rat metabolite and a xenobiotic metabolite. It is an enantiomer of a (+)-marmesin. Nodakenetin is a natural product found in Zanthoxylum beecheyanum, Melicope barbigera, and other organisms with data available. A marmesin with R-configuration. (+)-marmesin is a marmesin. It is an enantiomer of a nodakenetin. Marmesin is a natural product found in Coronilla scorpioides, Clausena dunniana, and other organisms with data available. Nodakenetin, isolated from Angelica decursiva, possesses antioxidant anti-inflammatory activities. Nodakenetin has the potential to be an antiarthritic and nerve tonic[1][2]. Nodakenetin, isolated from Angelica decursiva, possesses antioxidant anti-inflammatory activities. Nodakenetin has the potential to be an antiarthritic and nerve tonic[1][2]. S-(+)-Marmesin is a natural coumarin, exhibiting COX-2/5-LOX dual inhibitory activity. S-(+)-Marmesin is a natural coumarin, exhibiting COX-2/5-LOX dual inhibitory activity. S-(+)-Marmesin is a natural coumarin, exhibiting COX-2/5-LOX dual inhibitory activity.
Marmesine
Nodakenetin, isolated from Angelica decursiva, possesses antioxidant anti-inflammatory activities. Nodakenetin has the potential to be an antiarthritic and nerve tonic[1][2]. Nodakenetin, isolated from Angelica decursiva, possesses antioxidant anti-inflammatory activities. Nodakenetin has the potential to be an antiarthritic and nerve tonic[1][2].
Phenol, 4-[2-(3-hydroxy-5-methoxyphenyl)ethyl]-2-methoxy-
Gigantol is a natural product that could be isolated from Cymbidium giganteum. Gigantol is a potent inhibitor of the spontaneous contractions of the guinea-pig ileum[1].
Nootkatone
(+)-nootkatone is a sesquiterpenoid that is 4,4a,5,6,7,8-hexahydronaphthalen-2(3H)-one which is substituted by methyl groups at positions 4 and 4a, and by an isopropenyl group at position 6 (the 4R,4aS,6R stereoisomer). It has a role as a plant metabolite, a fragrance and an insect repellent. It is a sesquiterpenoid, an enone and a carbobicyclic compound. Nootkatone is a natural product found in Teucrium asiaticum, Teucrium oxylepis, and other organisms with data available. A sesquiterpenoid that is 4,4a,5,6,7,8-hexahydronaphthalen-2(3H)-one which is substituted by methyl groups at positions 4 and 4a, and by an isopropenyl group at position 6 (the 4R,4aS,6R stereoisomer). Nootkatone, a neuroprotective agent from Vitis vinifera, has antioxidant and anti-inflammatory effects[1]. Nootkatone improves cognitive impairment in lipopolysaccharide-induced mouse model of Alzheimer's disease[2]. Nootkatone, a neuroprotective agent from Vitis vinifera, has antioxidant and anti-inflammatory effects[1]. Nootkatone improves cognitive impairment in lipopolysaccharide-induced mouse model of Alzheimer's disease[2].