四氢吡喃（THP）是由一个含有五个碳原子和一个氧原子的饱和六元环组成的有机化合物。它被命名为吡喃，它包含两个双键，并且可以通过添加四个氢而产生。在2013，其优选的IUPAC名称被确立为OxAn。化合物为无色挥发性液体，但不清楚。然而，四氢吡喃衍生物更为常见。由醇和3,4-二氢吡喃反应得到的2-四氢吡喃(THP-)醚在有机合成中通常用作保护基。此外，四氢吡喃环体系，即五个碳原子和一个氧，是吡喃糖如葡萄糖的核心。在气相中，THP存在于其最低能量Cs对称椅构象中。
Calycosin-7-O-β-D-Glucoside
(2S,3R,4S,5S,6R)-2-(((2R,3R,4S,5S,6R)-4,5-Dihydroxy-2-(((3S,5R,8R,9R,10R,12R,13R,14R,17S)-12-hydroxy-17-((R)-2-hydroxy-6-methylhept-5-en-2-yl)-4,4,8,10,14-pentamethylhexadecahydro-1H-cyclopenta[a]phenanthren-3-yl)oxy)-6-(hydroxymethyl)tetrahydro-2H-pyran-3-yl)oxy)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol
7-(((2S,3R,4S,5S,6R)-4,5-dihydroxy-3-(((2S,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-6-((((2R,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)methyl)tetrahydro-2H-pyran-2-yl)oxy)-5-hydroxy-2-(4-hydroxyphenyl)-4H-chromen-4-one
5-Hydroxy-2-(3-hydroxy-4-methoxyphenyl)-7-(((2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-((((2R,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)methyl)tetrahydro-2H-pyran-2-yl)oxy)-4H-chromen-4-one
N-((2R,3R,4S,5R)-3,5,6-Trihydroxy-1-oxo-4-(((2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)hexan-2-yl)acetamide
6-Bromo-5-fluoro-1-(tetrahydro-2H-pyran-2-yl)-1H-indazole
(8S,10S)-10-(((2R,4S,5S,6S)-4-Amino-5-hydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-6,8,11-trihydroxy-8-(2-hydroxyacetyl)-1-methoxy-7,8,9,10-tetrahydrotetracene-5,12-dione hydrochloride
(2S,3S,4S,5R,6R)-2-(Methoxycarbonyl)-6-(2,2,2-trichloro-1-iminoethoxy)tetrahydro-2H-pyran-3,4,5-triyl triacetate
6-Nonyltetrahydro-2H-pyran-2-one
8-((2S,3R,4S,5S,6R)-4,5-Dihydroxy-6-(hydroxymethyl)-3-(((2S,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)tetrahydro-2H-pyran-2-yl)-5,7-dihydroxy-2-(4-hydroxyphenyl)-4H-chromen-4-one
(2R,3R,4R)-4-(((2S,3R,4R,5R)-3,4-Dihydroxy-5-(((2S,3R,4S,5R)-3,4,5-trihydroxytetrahydro-2H-pyran-2-yl)oxy)tetrahydro-2H-pyran-2-yl)oxy)-2,3,5-trihydroxypentanal
2-(Tetrahydropyran-4-yloxy)-5-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)pyridine
Methyl 2-amino-2-(tetrahydro-2H-pyran-4-yl)acetate hydrochloride
4-Methoxytetrahydro-2H-pyran-4-carboxylic acid
(R)-2-(9-(Pyridin-2-yl)-6-oxaspiro[4.5]decan-9-yl)acetonitrile
4-Bromo-5-methyl-1-(tetrahydro-2H-pyran-2-yl)-1H-indazole
(2R,3S,4S,5R,6R)-2-(Hydroxymethyl)-6-(4-hydroxyphenoxy)tetrahydro-2H-pyran-3,4,5-triol
(2S,3R,4S,5R,6R)-3,5-Dihydroxy-6-(((3,4,5-trihydroxybenzoyl)oxy)methyl)tetrahydro-2H-pyran-2,4-diyl bis(3,4,5-trihydroxybenzoate)
tert-Butyl ((3R,4S)-4-aminotetrahydrofuran-3-yl)carbamate
5-(Chloromethyl)-2-((tetrahydro-2H-pyran-4-yl)oxy)pyridine
1-(2-((Tetrahydro-2H-pyran-2-yl)oxy)ethyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole
Ethyl (((2R,3S,4S,5R,6S)-3,4,5-trihydroxy-6-((4-(4-isopropoxybenzyl)-1-isopropyl-5-Methyl-1H-pyrazol-3-yl)oxy)tetrahydro-2H-pyran-2-yl)methyl) carbonate
(2S,3R,4S,5R)-Tetrahydro-2H-pyran-2,3,4,5-tetraol
(2S,3R,4S,5S,6R)-2-(4-Chloro-3-(4-(((S)-tetrahydrofuran-3-yl)oxy)benzyl)phenyl)-6-(hydroxymethyl)-2-methoxytetrahydro-2H-pyran-3,4,5-triol
2-Methoxytetrahydro-2H-pyran
2-(3,4-Dihydroxyphenyl)-3,5-dihydroxy-7-(((2S,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-4H-chromen-4-one
3-(((2S,3R,4R,5R,6S)-4,5-Dihydroxy-6-methyl-3-(((2S,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)tetrahydro-2H-pyran-2-yl)oxy)-5-hydroxy-2-(4-methoxyphenyl)-8-(3-methylbut-2-en-1-yl)-7-(((2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)-4H-chromen-4-one
(R)-2-((tert-Butoxycarbonyl)amino)-3-(tetrahydro-2H-pyran-4-yl)propanoic acid
1-(Tetrahydro-2H-pyran-2-yl)-1H-pyrazolo[3,4-c]pyridin-3-amine
