四氫吡喃（THP）是由一個(gè)含有五個(gè)碳原子和一個(gè)氧原子的飽和六元環(huán)組成的有機(jī)化合物。它被命名為吡喃，它包含兩個(gè)雙鍵，并且可以通過(guò)添加四個(gè)氫而產(chǎn)生。在2013，其優(yōu)選的IUPAC名稱被確立為OxAn。化合物為無(wú)色揮發(fā)性液體，但不清楚。然而，四氫吡喃衍生物更為常見。由醇和3,4-二氫吡喃反應(yīng)得到的2-四氫吡喃(THP-)醚在有機(jī)合成中通常用作保護(hù)基。此外，四氫吡喃環(huán)體系，即五個(gè)碳原子和一個(gè)氧，是吡喃糖如葡萄糖的核心。在氣相中，THP存在于其最低能量Cs對(duì)稱椅構(gòu)象中。
N-(4-(4-Fluorophenyl)-5-((E)-2-((2S,4R)-4-hydroxy-6-oxotetrahydro-2H-pyran-2-yl)vinyl)-6-isopropylpyrimidin-2-yl)-N-methylmethanesulfonamide
2-(4-(Trifluoromethyl)phenyl)-3,5,7,8-tetrahydro-4H-thiopyrano[4,3-d]pyrimidin-4-one
2-(Tetrahydro-2H-pyran-4-yl)ethanamine hydrochloride
6-Heptyltetrahydro-2H-pyran-2-one
6-Octyltetrahydro-2H-pyran-2-one
6-Hexyltetrahydro-2H-pyran-2-one
Tetrahydro-2H-pyran-2-one
2,2,6,6-Tetramethyl-2H-3,5,6-trihydropyran-4-one
4-Phenyltetrahydro-2H-pyran-4-carbonitrile
2-Oxa-9-azaspiro[5.5]undecane hydrochloride
(2S,3R,4S,5S,6R)-6-(Hydroxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetraol hydrate
1,3,6-Trihydroxy-2-((2S,3R,4R,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)-7-(((2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)-9H-xanthen-9-one
Ethyl 4-oxotetrahydro-2H-pyran-2-carboxylate
4-Methyl-7-(((2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)-2H-chromen-2-one
4-Methyl-7-(((2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)-2H-chromen-2-one
(3R,4R,5R,6R)-3-Acetamido-6-(acetoxymethyl)tetrahydro-2H-pyran-2,4,5-triyl triacetate
4-Methyl-7-(((2S,3R,4S,5R)-3,4,5-trihydroxytetrahydro-2H-pyran-2-yl)oxy)-2H-chromen-2-one
4-Methylumbelliferyl 2-acetamido-2-deoxy-β-D-glucopyranoside
tert-Butyl 2-(tetrahydro-2H-pyran-4-yl)hydrazinecarboxylate
(2R,2'R,3S,3'S,4S,4'S,5R,5'R,6R,6'R)-6,6'-Oxybis(2-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol)
(3S,4S,5R,6R)-6-((Benzoyloxy)methyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetrabenzoate
(2S,4aR,6aS,6bR,8aR,9R,10R,11S,12aR,12bR,14bS)-10-(((2S,3R,4R,5R)-3,4-Dihydroxy-5-(((2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)tetrahydro-2H-pyran-2-yl)oxy)-11-hydroxy-9-(hydroxymethyl)-2-(methoxycarbonyl)-2,6a,6b,9,12
2-((Tetrahydro-2H-pyran-2-yl)oxy)ethanol
2-(Tetrahydro-2H-pyran-4-yl)ethanol
(2S,3R,4S,5S,6R)-2-(((6aR,12aR)-6a,12a-Dihydro-6H-[1,3]dioxolo[4',5':5,6]benzofuro[3,2-c]chromen-3-yl)oxy)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol
7-Oxa-2-azaspiro[3.5]nonane
(3aR,5R,6S,7R,7aR)-2-(Ethylamino)-5-(hydroxymethyl)-5,6,7,7a-tetrahydro-3aH-pyrano[3,2-d]thiazole-6,7-diol
2-Oxa-9-azaspiro[5.5]undecane
1-(Tetrahydro-2H-pyran-2-yl)-1H-pyrazole-4-carbonitrile
(2S,3R,4S,5S,6R)-6-(Hydroxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetraol
