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    首页 分子通 按分子结构分类 有机化合物 有机杂环化合物 内酰胺类

    内酰胺类

    中文名称 英文名称 CAS号 化学式 结构式图片
    —— (6R,7R)-7-Formylamino-3-(4-hydroxy-but-1-ynyl)-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid benzhydryl ester 189007-21-4 C25H22N2O5S
    (6R,7R)-7-Formylamino-3-(4-hydroxy-but-1-ynyl)-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid benzhydryl ester
    —— diethyl 2-[[(2R)-4-[tert-butyl(dimethyl)silyl]oxy-2-[(2S,3S)-3-[(1R)-1-[tert-butyl(dimethyl)silyl]oxyethyl]-4-oxo-1-(2-oxo-2-prop-2-enoxyacetyl)azetidin-2-yl]butanoyl]sulfanylmethyl]propanedioate 183052-36-0 C34H59NO11SSi2
    diethyl 2-[[(2R)-4-[tert-butyl(dimethyl)silyl]oxy-2-[(2S,3S)-3-[(1R)-1-[tert-butyl(dimethyl)silyl]oxyethyl]-4-oxo-1-(2-oxo-2-prop-2-enoxyacetyl)azetidin-2-yl]butanoyl]sulfanylmethyl]propanedioate
    —— (3S,4R)-4-[(2S,6R)-2-[(S)-(1-allyloxycarbonyl)pyrrolidin-3-ylthiomethyl]cyclohexanon-6-yl]-3-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]azetidin-2-one 211945-10-7 C26H44N2O5SSi
    (3S,4R)-4-[(2S,6R)-2-[(S)-(1-allyloxycarbonyl)pyrrolidin-3-ylthiomethyl]cyclohexanon-6-yl]-3-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]azetidin-2-one
    —— 2,2-dimethylpropanoyloxymethyl (6R,7R)-7-[[(2Z)-2-methoxyimino-2-[2-[[(2S)-3-methyl-2-[(2-methylpropan-2-yl)oxycarbonylamino]butanoyl]amino]-1,3-thiazol-4-yl]acetyl]amino]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate 249552-47-4 C29H40N6O10S2
    2,2-dimethylpropanoyloxymethyl (6R,7R)-7-[[(2Z)-2-methoxyimino-2-[2-[[(2S)-3-methyl-2-[(2-methylpropan-2-yl)oxycarbonylamino]butanoyl]amino]-1,3-thiazol-4-yl]acetyl]amino]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
    —— Methyl 3-(3,3-dimethyl-2-oxoazetidin-1-yl)-4-(4-fluorophenyl)thiophene-2-carboxylate 178062-66-3 C17H16FNO3S
    Methyl 3-(3,3-dimethyl-2-oxoazetidin-1-yl)-4-(4-fluorophenyl)thiophene-2-carboxylate
    —— (3R,4S)-3-(tert-Butyl-dimethyl-silanyloxy)-1-hexanoyl-4-phenyl-azetidin-2-one 186347-81-9 C21H33NO3Si
    (3R,4S)-3-(tert-Butyl-dimethyl-silanyloxy)-1-hexanoyl-4-phenyl-azetidin-2-one
    —— (3S,4S)-<1-(3,4-dimethoxybenzyl)-2-(3-hydroxypropyl)-4-oxoazetidin-3-yl>carbamic acid tert-butyl ester 214837-28-2 C20H30N2O6
    (3S,4S)-<1-(3,4-dimethoxybenzyl)-2-(3-hydroxypropyl)-4-oxoazetidin-3-yl>carbamic acid tert-butyl ester
    —— (4S)-3-[(2R,3R)-1-benzyl-2-[(1R)-1-[tert-butyl(dimethyl)silyl]oxyethyl]-4-oxoazetidin-3-yl]-4-phenyl-1,3-oxazolidin-2-one 184716-99-2 C27H36N2O4Si
    (4S)-3-[(2R,3R)-1-benzyl-2-[(1R)-1-[tert-butyl(dimethyl)silyl]oxyethyl]-4-oxoazetidin-3-yl]-4-phenyl-1,3-oxazolidin-2-one
    —— (3S,4R)-1-[tert-butyl(dimethyl)silyl]-3-[(1R)-1-[tert-butyl(dimethyl)silyl]oxyethyl]-4-[(1R,2R,6S)-7-oxabicyclo[4.1.0]heptan-2-yl]azetidin-2-one 188633-97-8 C23H45NO3Si2
    (3S,4R)-1-[tert-butyl(dimethyl)silyl]-3-[(1R)-1-[tert-butyl(dimethyl)silyl]oxyethyl]-4-[(1R,2R,6S)-7-oxabicyclo[4.1.0]heptan-2-yl]azetidin-2-one
    —— (6R,7R)-7-{2-(5-Amino-[1,2,4]thiadiazol-3-yl)-2-[(Z)-methoxyimino]-acetylamino}-3-(3-hydroxy-prop-1-ynyl)-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid benzhydryl ester 189007-31-6 C28H24N6O6S2
    (6R,7R)-7-{2-(5-Amino-[1,2,4]thiadiazol-3-yl)-2-[(Z)-methoxyimino]-acetylamino}-3-(3-hydroxy-prop-1-ynyl)-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid benzhydryl ester
    —— 1-[(p-nitrobenzyloxy)2-thiodioxophenylacetyl]-3-bromoazetidin-2-one 253445-92-0 C18H15BrN2O7S
    1-[(p-nitrobenzyloxy)2-thiodioxophenylacetyl]-3-bromoazetidin-2-one
    —— (4R,5S,6S)-3-{(3S,5S)-1-Allyloxycarbonyl-5-[3-(allyloxycarbonyl-methyl-amino)-prop-1-ynyl]-pyrrolidin-3-ylsulfanyl}-6-((R)-1-hydroxy-ethyl)-4-methyl-7-oxo-1-aza-bicyclo[3.2.0]hept-2-ene-2-carboxylic acid allyl ester 1026940-62-4 C29H37N3O8S
    (4R,5S,6S)-3-{(3S,5S)-1-Allyloxycarbonyl-5-[3-(allyloxycarbonyl-methyl-amino)-prop-1-ynyl]-pyrrolidin-3-ylsulfanyl}-6-((R)-1-hydroxy-ethyl)-4-methyl-7-oxo-1-aza-bicyclo[3.2.0]hept-2-ene-2-carboxylic acid allyl ester
    —— (5R,6S)-3-(3-Benzyl-isoxazol-5-yl)-6-((R)-1-hydroxy-ethyl)-7-oxo-1-aza-bicyclo[3.2.0]hept-2-ene-2-carboxylic acid 4-nitro-benzyl ester 1027538-44-8 C26H23N3O7
    (5R,6S)-3-(3-Benzyl-isoxazol-5-yl)-6-((R)-1-hydroxy-ethyl)-7-oxo-1-aza-bicyclo[3.2.0]hept-2-ene-2-carboxylic acid 4-nitro-benzyl ester
    —— allyl (4R,5R,6S)-6-[(R)-1-(hydroxy)ethyl]-3-[(R)-pyrrolidine-2-thion-4-ylthio]-4-methyl-7-oxo-azabicyclo[3.2.0]hept-2-ene-2-carboxylate 153471-13-7 C17H22N2O4S2
    allyl (4R,5R,6S)-6-[(R)-1-(hydroxy)ethyl]-3-[(R)-pyrrolidine-2-thion-4-ylthio]-4-methyl-7-oxo-azabicyclo[3.2.0]hept-2-ene-2-carboxylate
    —— (3R,4S)-1-(4-methoxyphenyl)-4-((E)-prop-1-en-1-yl)-3-((triisopropylsilyl)oxy)azetidin-2-one 287117-58-2 C22H35NO3Si
    (3R,4S)-1-(4-methoxyphenyl)-4-((E)-prop-1-en-1-yl)-3-((triisopropylsilyl)oxy)azetidin-2-one
    —— (6R,7R)-7-[[(2Z)-2-(5-amino-1,2,4-thiadiazol-3-yl)-2-(fluoromethoxyimino)acetyl]amino]-3-[(E)-2-(1-methylimidazo[1,2-b]pyridazin-1-ium-6-yl)sulfanylethenyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate 181583-57-3 C21H18FN9O5S3
    (6R,7R)-7-[[(2Z)-2-(5-amino-1,2,4-thiadiazol-3-yl)-2-(fluoromethoxyimino)acetyl]amino]-3-[(E)-2-(1-methylimidazo[1,2-b]pyridazin-1-ium-6-yl)sulfanylethenyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
    —— (3S,4R)-4-[(2S,6R)-2-[(S)-(1-allyloxycarbonyl)pyrrolidin-2-ylmethylthiomethyl]cyclohexanon-6-yl]-3-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]azetidin-2-one 211945-21-0 C27H46N2O5SSi
    (3S,4R)-4-[(2S,6R)-2-[(S)-(1-allyloxycarbonyl)pyrrolidin-2-ylmethylthiomethyl]cyclohexanon-6-yl]-3-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]azetidin-2-one
    —— (6R,7R)-7-[[(2Z)-2-(5-amino-1,2,4-thiadiazol-3-yl)-2-(methoxymethoxyimino)acetyl]amino]-3-[(6-carbamoylimidazo[1,2-b]pyridazin-1-ium-1-yl)methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate 159045-45-1 C21H20N10O7S2
    (6R,7R)-7-[[(2Z)-2-(5-amino-1,2,4-thiadiazol-3-yl)-2-(methoxymethoxyimino)acetyl]amino]-3-[(6-carbamoylimidazo[1,2-b]pyridazin-1-ium-1-yl)methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
    —— (4-nitrophenyl)methyl (4R,5S,6S)-6-[(1R)-1-hydroxyethyl]-4-methyl-3-[(3S,5S)-5-(1-methylpiperidin-4-yl)-1-[(4-nitrophenyl)methoxycarbonyl]pyrrolidin-3-yl]sulfanyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate 149395-80-2 C35H41N5O10S
    (4-nitrophenyl)methyl (4R,5S,6S)-6-[(1R)-1-hydroxyethyl]-4-methyl-3-[(3S,5S)-5-(1-methylpiperidin-4-yl)-1-[(4-nitrophenyl)methoxycarbonyl]pyrrolidin-3-yl]sulfanyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate
    —— (3S,4R)-3-Azido-1-benzoyl-4-phenyl-azetidin-2-one 189286-12-2 C16H12N4O2
    (3S,4R)-3-Azido-1-benzoyl-4-phenyl-azetidin-2-one
    —— (3S,4R)-1-benzyl-4-[(1S)-N-(tert-butoxycarbonyl)piperidin-2-yl]-3-hydroxyazetidin-2-one 178208-02-1 C20H28N2O4
    (3S,4R)-1-benzyl-4-[(1S)-N-(tert-butoxycarbonyl)piperidin-2-yl]-3-hydroxyazetidin-2-one
    —— ethyl 2-[(2S,3S)-3-[(1R)-1-[tert-butyl(dimethyl)silyl]oxyethyl]-2-[(2R)-1-ethylsulfanyl-1-oxopropan-2-yl]-4-oxoazetidin-1-yl]-2-(triethoxy-lambda5-phosphanylidene)acetate 1062035-74-8 C26H50NO8PSSi
    ethyl 2-[(2S,3S)-3-[(1R)-1-[tert-butyl(dimethyl)silyl]oxyethyl]-2-[(2R)-1-ethylsulfanyl-1-oxopropan-2-yl]-4-oxoazetidin-1-yl]-2-(triethoxy-lambda5-phosphanylidene)acetate
    —— (6R,7R)-7-[[(2Z)-2-(5-amino-1,2,4-thiadiazol-3-yl)-2-(methoxymethoxyimino)acetyl]amino]-3-[[6-(methylcarbamoylamino)imidazo[1,2-b]pyridazin-1-ium-1-yl]methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate 316352-11-1 C22H23N11O7S2
    (6R,7R)-7-[[(2Z)-2-(5-amino-1,2,4-thiadiazol-3-yl)-2-(methoxymethoxyimino)acetyl]amino]-3-[[6-(methylcarbamoylamino)imidazo[1,2-b]pyridazin-1-ium-1-yl]methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
    —— (3R,4S)-1-benzyl-4-[(4S,5S)-2,2-dimethyl-5-phenyl-1,3-dioxolan-4-yl]-3-phenylmethoxyazetidin-2-one 260354-54-9 C28H29NO4
    (3R,4S)-1-benzyl-4-[(4S,5S)-2,2-dimethyl-5-phenyl-1,3-dioxolan-4-yl]-3-phenylmethoxyazetidin-2-one
    —— (3R,4S)-4-(4-Benzyloxy-phenyl)-1-(4-fluoro-phenyl)-3-(3-oxo-3-phenyl-propyl)-azetidin-2-one 179928-03-1 C31H26FNO3
    (3R,4S)-4-(4-Benzyloxy-phenyl)-1-(4-fluoro-phenyl)-3-(3-oxo-3-phenyl-propyl)-azetidin-2-one
    —— (3S,4R)-1-allyloxalyl-4-[(2S,6R)-2-[(S)-(1-allyloxycarbonyl)pyrrolidin-2-ylmethylthio]cyclohexanon-6-yl]-3-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]azetidin-2-one 221678-37-1 C31H48N2O8SSi
    (3S,4R)-1-allyloxalyl-4-[(2S,6R)-2-[(S)-(1-allyloxycarbonyl)pyrrolidin-2-ylmethylthio]cyclohexanon-6-yl]-3-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]azetidin-2-one
    —— (4-methoxyphenyl)methyl (6R,7R)-3-[(1E)-buta-1,3-dienyl]-7-[[(2Z)-2-(2-methoxypropan-2-yloxyimino)-2-[5-[(2-methylpropan-2-yl)oxycarbonylamino]-1,2,4-thiadiazol-3-yl]acetyl]amino]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate 162081-91-6 C32H38N6O9S2
    (4-methoxyphenyl)methyl (6R,7R)-3-[(1E)-buta-1,3-dienyl]-7-[[(2Z)-2-(2-methoxypropan-2-yloxyimino)-2-[5-[(2-methylpropan-2-yl)oxycarbonylamino]-1,2,4-thiadiazol-3-yl]acetyl]amino]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
    —— cis-3-methyl-4-phenyl-1-benzhydrylazetidin-2-one 88047-76-1 C23H21NO
    cis-3-methyl-4-phenyl-1-benzhydrylazetidin-2-one
    —— 1-(2,2,2-trifluoroethyloxycarbonyl)-3-bromoazetidin-2-one 243143-35-3 C6H5BrF3NO3
    1-(2,2,2-trifluoroethyloxycarbonyl)-3-bromoazetidin-2-one
    —— S-[(R)-pyrrolidine-2-thion-4-yl]-(R)-2-{(3S,4S)-1-allyloxycarbonylmethyl-3-[(1R)-1-(tert-butyldimethylsilyloxy)ethyl]-2-oxoazetidin-4-yl}thiopropionate 153976-19-3 C23H38N2O5S2Si
    S-[(R)-pyrrolidine-2-thion-4-yl]-(R)-2-{(3S,4S)-1-allyloxycarbonylmethyl-3-[(1R)-1-(tert-butyldimethylsilyloxy)ethyl]-2-oxoazetidin-4-yl}thiopropionate
    —— (6R,7R)-7-[[(2Z)-2-(5-amino-1,2,4-thiadiazol-3-yl)-2-(methoxymethoxyimino)acetyl]amino]-3-[[6-[[2-[(2-methylpropan-2-yl)oxycarbonylamino]acetyl]amino]imidazo[1,2-b]pyridazin-1-ium-1-yl]methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate 316352-12-2 C27H31N11O9S2
    (6R,7R)-7-[[(2Z)-2-(5-amino-1,2,4-thiadiazol-3-yl)-2-(methoxymethoxyimino)acetyl]amino]-3-[[6-[[2-[(2-methylpropan-2-yl)oxycarbonylamino]acetyl]amino]imidazo[1,2-b]pyridazin-1-ium-1-yl]methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
    —— (3S,4R)-4-[(2R,6R)-2-[(S)-(1-allyloxycarbonyl)pyrrolidin-3-ylthiomethyl]cyclohexanon-6-yl]-3-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]azetidin-2-one 211945-11-8 C26H44N2O5SSi
    (3S,4R)-4-[(2R,6R)-2-[(S)-(1-allyloxycarbonyl)pyrrolidin-3-ylthiomethyl]cyclohexanon-6-yl]-3-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]azetidin-2-one
    —— cefazolin delta-3 methyl ester 79239-19-3 C15H16N8O4S3
    cefazolin delta-3 methyl ester
    —— (4R,5S,6S)-3-[(2S,4S)-2-(carbamoylmethyl)thiomethylpyrrolidin-4-ylthio]-6-[(1R)-1-hydroxyethyl]-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid 186505-51-1 C17H25N3O5S2
    (4R,5S,6S)-3-[(2S,4S)-2-(carbamoylmethyl)thiomethylpyrrolidin-4-ylthio]-6-[(1R)-1-hydroxyethyl]-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid
    —— tert-butyl N-[(2R,3S)-2-[2-(oxan-2-yloxy)ethyl]-4-oxo-1-phenylmethoxyazetidin-3-yl]carbamate 214412-61-0 C22H32N2O6
    tert-butyl N-[(2R,3S)-2-[2-(oxan-2-yloxy)ethyl]-4-oxo-1-phenylmethoxyazetidin-3-yl]carbamate
    —— 4(S)-(4-hydroxyphenyl)-3(R)-(3(S)-hydroxy-3-phenylpropyl)-1-(4-methoxyphenyl)-2-azetidinone 163380-26-5 C25H25NO4
    4(S)-(4-hydroxyphenyl)-3(R)-(3(S)-hydroxy-3-phenylpropyl)-1-(4-methoxyphenyl)-2-azetidinone
    —— (6R,7R)-7-{2-(2-Amino-thiazol-4-yl)-2-[(Z)-ethoxyimino]-acetylamino}-3-(4-hydroxy-but-1-ynyl)-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid benzhydryl ester 189007-37-2 C31H29N5O6S2
    (6R,7R)-7-{2-(2-Amino-thiazol-4-yl)-2-[(Z)-ethoxyimino]-acetylamino}-3-(4-hydroxy-but-1-ynyl)-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid benzhydryl ester
    —— (6R,7R)-8-Oxo-7-phenylacetylamino-3-(2-phenylsulfanyl-thiazol-5-yl)-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid benzhydryl ester 177553-57-0 C37H29N3O4S3
    (6R,7R)-8-Oxo-7-phenylacetylamino-3-(2-phenylsulfanyl-thiazol-5-yl)-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid benzhydryl ester
    —— (4S)-3-[(2R,3R)-2-[(1R)-1-[tert-butyl(dimethyl)silyl]oxyethyl]-4-oxo-1-[(1S)-1-phenylethyl]azetidin-3-yl]-4-phenyl-1,3-oxazolidin-2-one 184717-11-1 C28H38N2O4Si
    (4S)-3-[(2R,3R)-2-[(1R)-1-[tert-butyl(dimethyl)silyl]oxyethyl]-4-oxo-1-[(1S)-1-phenylethyl]azetidin-3-yl]-4-phenyl-1,3-oxazolidin-2-one
    —— (6R,7R)-7-[[(2Z)-2-(5-amino-1,2,4-thiadiazol-3-yl)-2-cyclopentyloxyiminoacetyl]amino]-3-[(3-formamidoimidazo[1,2-b]pyridazin-1-ium-1-yl)methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate 169956-14-3 C24H24N10O6S2
    (6R,7R)-7-[[(2Z)-2-(5-amino-1,2,4-thiadiazol-3-yl)-2-cyclopentyloxyiminoacetyl]amino]-3-[(3-formamidoimidazo[1,2-b]pyridazin-1-ium-1-yl)methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
    —— (3S,4S)-3-Amino-4-[(R)-1-(tert-butyl-dimethyl-silanyloxy)-ethyl]-azetidin-2-one 184717-15-5 C11H24N2O2Si
    (3S,4S)-3-Amino-4-[(R)-1-(tert-butyl-dimethyl-silanyloxy)-ethyl]-azetidin-2-one
    —— allyl (4R,8S,9R,10S)-4-[(S)-(1-allyloxycarbonyl)pyrrolidin-2-ylmethylthiomethyl]-10-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]-11-oxo-1-azatricyclo[7.2.0.0<sup>3,8</sup>]undec-2-ene-2-carboxylate 211945-25-4 C32H50N2O6SSi
    allyl (4R,8S,9R,10S)-4-[(S)-(1-allyloxycarbonyl)pyrrolidin-2-ylmethylthiomethyl]-10-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]-11-oxo-1-azatricyclo[7.2.0.0<sup>3,8</sup>]undec-2-ene-2-carboxylate
    —— (4-nitrophenyl)methyl (4R,5S,6S)-6-[(1R)-1-hydroxyethyl]-4-methyl-7-oxo-3-[(3R)-5-oxopyrrolidin-3-yl]sulfanyl-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate 157429-43-1 C21H23N3O7S
    (4-nitrophenyl)methyl (4R,5S,6S)-6-[(1R)-1-hydroxyethyl]-4-methyl-7-oxo-3-[(3R)-5-oxopyrrolidin-3-yl]sulfanyl-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate
    —— methyl 1,1-dioxo-2α-bromo-3-methyl-7-phenoxyacetamido-cephem-4-carboxylate 195712-42-6 C17H17BrN2O7S
    methyl 1,1-dioxo-2α-bromo-3-methyl-7-phenoxyacetamido-cephem-4-carboxylate
    —— (6R,7R)-7-[[(2Z)-2-(5-amino-1,2,4-thiadiazol-3-yl)-2-(methoxymethoxyimino)acetyl]amino]-3-[[6-(methylamino)imidazo[1,2-b]pyridazin-1-ium-1-yl]methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate 316352-10-0 C21H22N10O6S2
    (6R,7R)-7-[[(2Z)-2-(5-amino-1,2,4-thiadiazol-3-yl)-2-(methoxymethoxyimino)acetyl]amino]-3-[[6-(methylamino)imidazo[1,2-b]pyridazin-1-ium-1-yl]methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
    —— allyl (4S,8S,9R,10S)-4-[(S)-(1-allyloxycarbonyl)pyrrolidin-2-ylmethylthio]-10-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]-11-oxo-1-azatricyclo[7.2.0.0<sup>3,8</sup>]undec-2-ene-2-carboxylate 221678-38-2 C31H48N2O6SSi
    allyl (4S,8S,9R,10S)-4-[(S)-(1-allyloxycarbonyl)pyrrolidin-2-ylmethylthio]-10-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]-11-oxo-1-azatricyclo[7.2.0.0<sup>3,8</sup>]undec-2-ene-2-carboxylate
    —— (3S,4R)-4-[(2R,6R)-2-[(S)-(1-allyloxycarbonyl)pyrrolidin-2-ylmethylthiomethyl]cyclohexanon-6-yl]-3-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]azetidin-2-one 211945-22-1 C27H46N2O5SSi
    (3S,4R)-4-[(2R,6R)-2-[(S)-(1-allyloxycarbonyl)pyrrolidin-2-ylmethylthiomethyl]cyclohexanon-6-yl]-3-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]azetidin-2-one
    —— 1-[(p-nitrobenzyloxy)2-fluoroacetyl]-3-bromoazetidin-2-one 253445-93-1 C12H10BrFN2O5
    1-[(p-nitrobenzyloxy)2-fluoroacetyl]-3-bromoazetidin-2-one
    —— (6R,7R)-7-[[(2Z)-2-(5-amino-1,2,4-thiadiazol-3-yl)-2-(methoxymethoxyimino)acetyl]amino]-3-[[6-(carbamoylamino)imidazo[1,2-b]pyridazin-1-ium-1-yl]methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate 159045-46-2 C21H21N11O7S2
    (6R,7R)-7-[[(2Z)-2-(5-amino-1,2,4-thiadiazol-3-yl)-2-(methoxymethoxyimino)acetyl]amino]-3-[[6-(carbamoylamino)imidazo[1,2-b]pyridazin-1-ium-1-yl]methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
    —— allyl (4R,5R,6S)-6-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]-3-[(R)-pyrrolidine-2-thion-4-ylthio]-4-methyl-7-oxo-azabicyclo[3.2.0]hept-2-ene-2-carboxylate 153471-14-8 C23H36N2O4S2Si
    allyl (4R,5R,6S)-6-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]-3-[(R)-pyrrolidine-2-thion-4-ylthio]-4-methyl-7-oxo-azabicyclo[3.2.0]hept-2-ene-2-carboxylate