Classification Term: 47

Dihydropyranones (ontology term: CHEMONTID:0001211)

Compounds containing a hydrogenated pyran ring which bears a ketone, and contains one double bond." []

found 18 associated metabolites at category metabolite taxonomy ontology rank level.

Child Taxonomies: There is no child term of current ontology term.

5,6-Dihydro-6-pentyl-2H-pyran-2-one

5-Hydroxy-2-decenoic acid laquo deltaRaquo -lactone

(R)-5,6-Dihydro-6-pentyl-2H-pyran-2-one is used as a food additive [EAFUS] ("EAFUS: Everything Added to Food in the United States. [http://www.eafus.com/]") Present in blackberries and cane molasses. Flavouring ingredient. 5,6-Dihydro-6-pentyl-2H-pyran-2-one is found in fruits. Massoia lactone is a natural product found in Allium cepa and Perilla frutescens with data available.

Calenduloside H

6-{[4,4,6a,6b,11,11,14b-heptamethyl-8a-({[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}carbonyl)-1,2,3,4,4a,5,6,6a,6b,7,8,8a,9,10,11,12,12a,14,14a,14b-icosahydropicen-3-yl]oxy}-3,5-dihydroxy-4-{[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}oxane-2-carboxylic acid

C48H76O19 (956.4980545999999)

Calenduloside H is isolated from marigold leaves (Calendula officinalis Isolated from marigold leaves (Calendula officinalis).

Osmundalactone

5-hydroxy-6-methyl-5,6-dihydro-2H-pyran-2-one

C6H8O3 (128.0473418)

Osmundalactone is found in root vegetables. Osmundalactone is a constituent of Osmunda japonica (zenmai)

xi-2,3-Dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

3-hydroxy-5-methoxy-6-methyl-3,4-dihydro-2H-pyran-4-one

C7H10O4 (158.057906)

xi-2,3-Dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one is found in numerous cooked or stored foods such as cooked vegetables, bread crust, caramelised sugar products and dehydrated orange juice powder. Intermediate produced in Maillard reaction; formed in non-enzymic browning reactions; synthetic from aldohexoses and secondary amines. Found in numerous cooked or stored foods such as cooked vegetables, bread crust, caramelised sugar products and dehydrated orange juice powder. Intermed. production in Maillard reaction; formed in non-enzymic browning reactions; synth. from aldohexoses and secondary amines

6-Heptyl-5,6-dihydro-2H-pyran-2-one

C12H20O2 (196.14632200000003)

(±)-6-Heptyl-5,6-dihydro-2H-pyran-2-one is a flavouring ingredient. It is used as a food additive .

Erinapyrone B

(2R)-2,3-Dihydro-2-hydroxymethyl-6-methyl-4H-pyran-4-one

C7H10O3 (142.062991)

Erinapyrone B is found in mushrooms. Erinapyrone B is isolated from Hericium erinaceum (lions mane). Isolated from Hericium erinaceum (lions mane). Erinapyrone B is found in mushrooms.

5,6-Dihydro-4-methoxy-2H-pyran-2-one

C6H8O3 (128.0473418)

5,6-Dihydro-4-methoxy-2H-pyran-2-one is a mycotoxin produced by Penicillium italicum. Mycotoxin production by Penicillium italicum.

Elenolide

Methyl 2-oxo-4-[(2Z)-1-oxobut-2-en-2-yl]-3,4-dihydro-2H-pyran-5-carboxylic acid

C11H12O5 (224.06847019999998)

Constituent of olive oil. Elenolide is found in many foods, some of which are fats and oils, olive, pomes, and herbs and spices. Elenolide is found in fats and oils. Elenolide is a constituent of olive oil

Erinapyrone C

6-(1-Hydroxyethyl)-3-(hydroxymethyl)-2,7-dioxabicyclo[4.1.0]hept-3-en-5-one, 9ci

C8H10O5 (186.052821)

Erinapyrone C is found in mushrooms. Erinapyrone C is produced by the fungus Hericium erinaceus (lions mane). Production by the fungus Hericium erinaceus (lions mane). Erinapyrone C is found in mushrooms.

Erinapyrone A

(2S)-2,3-Dihydro-6-hydroxymethyl-2-methyl-4H-pyran-4-one

C7H10O3 (142.062991)

Erinapyrone A is found in mushrooms. Erinapyrone A is isolated from Hericium erinaceum (lions mane). Isolated from Hericium erinaceum (lions mane). Erinapyrone A is found in mushrooms.

Grevilline A

(6E)-3-hydroxy-4-(4-hydroxyphenyl)-6-[(4-hydroxyphenyl)methylidene]-5,6-dihydro-2H-pyran-2,5-dione

C18H12O6 (324.06338519999997)

Grevilline A is found in mushrooms. Grevilline A is a pigment from Suillus grevillei (larch bolete

Dumetorine

5,6-Dihydro-4-methyl-6-[(1-methyl-2-piperidinyl)methyl]-2H-pyran-2-one, 9ci

C13H21NO2 (223.15722060000002)

Dumetorine is found in root vegetables. Dumetorine is an alkaloid from the tubers of the famine food Dioscorea dumetoru

Cartorimine

1-(hydroxymethyl)-7-(4-hydroxyphenyl)-4-oxo-8-oxabicyclo[3.2.1]oct-2-ene-6-carboxylic acid

C15H14O6 (290.0790344)

Constituent of Carthamus tinctorius (safflower). Cartorimine is found in fats and oils and herbs and spices. Cartorimine is found in fats and oils. Cartorimine is a constituent of Carthamus tinctorius (safflower)

5-Hydroxy-4-pentenoic acid d-lactone

C5H6O2 (98.0367776)

5-Hydroxy-4-pentenoic acid d-lactone is found in nuts. 5-Hydroxy-4-pentenoic acid d-lactone is a constituent of roasted peanut flavour. Constituent of roasted peanut flavour. 5-Hydroxy-4-pentenoic acid d-lactone is found in nuts.

Dehydroacetic acid

3-acetyl-6-methyl-3,4-dihydro-2H-pyran-2,4-dione

C8H8O4 (168.0422568)

Fostriecin

{[3,6,13-trihydroxy-3-methyl-1-(6-oxo-3,6-dihydro-2H-pyran-2-yl)trideca-1,7,9,11-tetraen-4-yl]oxy}phosphonic acid

C19H27O9P (430.1392622)

Leustroducsin B

{[3-(2-aminoethyl)-1-(3-ethyl-6-oxo-3,6-dihydro-2H-pyran-2-yl)-3,6-dihydroxy-10-{3-[(6-methyloctanoyl)oxy]cyclohexyl}deca-1,7,9-trien-4-yl]oxy}phosphonic acid

C34H56NO10P (669.3641646)

Parasorbic acid

6-methyl-5,6-dihydro-2H-pyran-2-one

C6H8O2 (112.05242679999999)

Parasorbic acid, also known as parasorbate, is a member of the class of compounds known as dihydropyranones. Dihydropyranones are compounds containing a hydrogenated pyran ring which bears a ketone, and contains one double bond. Parasorbic acid is soluble (in water) and an extremely weak acidic compound (based on its pKa). Parasorbic acid can be found in american cranberry and rowanberry, which makes parasorbic acid a potential biomarker for the consumption of these food products. Parasorbic acid is the cyclic lactone of sorbic acid. Thermal treatment or hydrolysis converts the lactone to sorbic acid .