脂环烃分子中两个碳环共有一个碳原子称为螺环烃，可形成螺环化合物
2-(tert-Butoxycarbonyl)-2-azaspiro[3.3]heptane-6-carboxylic acid
2,8-Diazaspiro[4.5]decan-3-one dihydrochloride
tert-Butyl 1,6-diazaspiro[3.3]heptane-6-carboxylate oxalate(2:1)
tert-Butyl 9-(2-methoxy-2-oxoethyl)-3-azaspiro[5.5]undecane-3-carboxylate
5-Benzyl-5-azaspiro[2.4]heptane-4,7-dione
6'-(Diethylamino)-1',3'-dimethyl-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one
3,9-Di(cyclohex-3-en-1-yl)-2,4,8,10-tetraoxaspiro[5.5]undecane
8-Methyl-1,4-dioxaspiro[4.5]decan-8-ol
7-Oxa-2-azaspiro[3.5]nonane
2-Oxa-9-azaspiro[5.5]undecane
tert-Butyl 1,6-diazaspiro[3.3]heptane-6-carboxylate oxalate
2-Oxa-6-azaspiro[3.4]octane oxalate
2-Azaspiro[4.5]decan-1-one
5-(tert-Butoxycarbonyl)-5-azaspiro[2.3]hexane-1-carboxylic acid
2'-Bromospiro[cyclohexane-1,9'-fluorene]
tert-Butyl 9-oxo-3-azaspiro[5.5]undec-7-ene-3-carboxylate
2-Butyl-3-((2'-(2-trityl-2H-tetrazol-5-yl)-[1,1'-biphenyl]-4-yl)methyl)-1,3-diazaspiro[4.4]non-1-en-4-one
Spiro[5.5]undecan-3-one
Methyl (1'S,3S,4a'S,5a'S,10a'S)-1'-methyl-2-oxo-4a',5',5a',7',8',10a'-hexahydro-1'H,10'H-spiro[indoline-3,6'-pyrano[3,4-f]indolizine]-4'-carboxylate
1-Oxa-7-azaspiro[3.5]nonane oxalate(2:1)
tert-Butyl 6-hydroxy-2-azaspiro[3.4]octane-2-carboxylate
(2R,4S,4aS)-11-Fluoro-2,4-dimethyl-8-((S)-4-methyl-2-oxooxazolidin-3-yl)-1,2,4,4a-tetrahydro-2'H,6H-spiro[isoxazolo[4,5-g][1,4]oxazino[4,3-a]quinoline-5,5'-pyrimidine]-2',4',6'(1'H,3'H)-trione
Spiro[2.3]hexane-5-carboxylic acid
Methyl 1,4-dioxaspiro[4.4]nonane-7-carboxylate
(S)-6-(tert-Butoxycarbonyl)-6-azaspiro[2.5]octane-5-carboxylic acid
2,3-Dihydrospiro[indene-1,4'-piperidine]
4,4,5,5-Tetramethyl-2-(1,4-dioxaspiro[4.5]dec-7-en-8-yl)-1,3,2-dioxaborolane
2,5,7-Triazaspiro[3.4]octan-6-one hydrochloride
tert-Butyl 8-oxa-2,5-diazaspiro[3.5]nonane-2-carboxylate
1,7-Diazaspiro[3.5]nonane dihydrochloride
