中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 2-[(2R,3R)-2-acetyloxy-3-[(1R)-1-[tert-butyl(dimethyl)silyl]oxyethyl]-4-oxoazetidin-1-yl]-3-methylbut-2-enoic acid | 102570-24-1 | C18H31NO6Si | 385.533 |
—— | (3S,4R)-3-<1(R)-tert-butyldimethylsilyloxyethyl>-4-chloro-1-(1-methoxycarbonyl-2-methyl-1-propenyl)azetidin-2-one | 87038-65-1 | C17H30ClNO4Si | 375.968 |
—— | (5R,6S)-6-Bromo-6-[(1R)-1-[[(1,1-dimethylethyl)dimethylsilyl]oxy]ethyl]-2-(1-methylethylidene)-4-thia-1-azabicyclo[3.2.0]heptane-3,7-dione | 102579-79-3 | C16H26BrNO3SSi | 420.443 |
—— | (2S,5R,6S)-6-Bromo-6-[1-(tert-butyl-dimethyl-silanyloxy)-ethyl]-3,3-dimethyl-7-oxo-4-thia-1-aza-bicyclo[3.2.0]heptane-2-carboxylic acid methyl ester | 81225-41-4 | C17H30BrNO4SSi | 452.485 |
—— | methyl (3S,5R,6S)-6-<(1R)-(tert-butyldimethylsiloxy)ethyl>penicillanate | 81225-42-5 | C17H31NO4SSi | 373.589 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | methyl 2-[(2R,3R)-2-acetyloxy-3-[(1R)-1-[(4-nitrophenyl)methoxycarbonyloxy]ethyl]-4-oxoazetidin-1-yl]-3-methylbut-2-enoate | 87206-26-6 | C21H24N2O10 | 464.429 |
—— | (3S,4R)-4-acetoxy-3-<1(R)-tert-butyldimethylsilyloxyethyl>-1-(2-methoxy-1,2-dioxyethyl)azetidine-2-one | 111619-17-1 | C16H27NO7Si | 373.478 |
—— | p-nitrobenzyl (5R,6S)-6-<(1R)-(tert-butyldimethylsiloxy)ethyl>-2-<((RS)-N-p-nitrobenzyloxycarbonylpiperidin-2-yl)methyl>-2-penem-3-carboxylate | 105420-63-1 | C35H44N4O10SSi | 740.907 |
—— | p-nitrobenzyl (5R,6S)-6-<(1R)-(tert-butyldimethylsilyloxy)ethyl>-2-<(2S)-N-p-nitrobenzyloxycarbonylazeitidin-2-yl>methyl-2-penem-3-carboxylate | 105420-61-9 | C33H40N4O10SSi | 712.853 |
—— | p-nitrobenzyl (5R,6S)-6-<(1R)-(tert-butyldimethylsiloxy)ethyl>-2-<(2R)-N-p-nitrobenzyloxycarbonylpyrrolidin-2-yl>methyl-2-penem-3-carboxylate | 105420-62-0 | C34H42N4O10SSi | 726.88 |
—— | p-nitrobenzyl (5R,6S)-6-<(1R)-(tert-butyldimethylsiloxy)ethyl>-2-<(2S)-N-p-nitrobenzyloxycarbonylpyrrolidin-2-yl-methyl>-2-penem-3-carboxylate | 105420-54-0 | C34H42N4O10SSi | 726.88 |
—— | p-nitrobenzyl (5R,6S)-6-<(1R)-(tert-butyldimethylsiloxy)ethyl>-2-(2-p-nitrobenzyloxycarbonylaminoethyl)-2-penem-3-carboxylate | 81225-24-3 | C31H38N4O10SSi | 686.815 |
—— | p-nitrobenzyl (5R,6S)-6-<(1R)-(tert-butyldimethylsiloxy)ethyl>-2-(3-p-nitrobenzyloxycarbonylaminopropan-1-yl)-2-penem-3-carboxylate | 81225-30-1 | C32H40N4O10SSi | 700.842 |
—— | p-nitrobenzyl (5R,6S)-6-<(1R)-(tert-butyldimethylsiloxy)ethyl>-2-(4-p-nitrobenzyloxycarbonylaminobutan-1-yl)-2-penem-3-carboxylate | 81225-37-8 | C33H42N4O10SSi | 714.869 |
—— | 4-nitrobenzyl (5R,6R)-6-((R)-1-((tert-butyldimethylsilyl)oxy)ethyl)-3-(4-((((4-nitrobenzyl)oxy)carbonyl)amino)butyl)-7-oxo-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate | 81225-37-8 | C33H42N4O10SSi | 714.869 |
—— | p-nitrobenzyl (5R,6S)-6-<(1R)-(tert-butyldimethylsiloxy)ethyl>-2- |
105420-60-8 | C34H42N4O10SSi | 726.88 |
—— | p-nitrobenzyl (5R,6S)-6-<(1R)-(tert-butyldimethylsiloxy)ethyl>-2-ethyl-2-penem-3-carboxylate | 105420-55-1 | C23H32N2O6SSi | 492.668 |
—— | p-nitrobenzyl (5R,6S)-6-<(1R)-(tert-butyldimethylsiloxy)ethyl>-2-<(2R)-N-p-nitrobenzyloxycarbonylpyrrolidin-2-yl>-2-penem-3-carboxylate | 105420-58-4 | C33H40N4O10SSi | 712.853 |
—— | p-nitrobenzyl (5R,6S)-6-<(1R)-(tert-butyldimethylsiloxy)ethyl>-2-<(2S)-N-p-nitrobenzyloxycarbonylpyrrolidin-2-yl>-2-penem-3-carboxylate | 105420-58-4 | C33H40N4O10SSi | 712.853 |
—— | p-nitrobenzyl (5R,6S)-6-<(1R)-(tert-butyldimethylsiloxy)ethyl>-2-ethoxymethyl-2-penem-3-carboxylate | 105430-38-4 | C24H34N2O7SSi | 522.695 |
—— | p-nitrobenzyl (5R,6S)-6-<(1R)-(tert-butyldimethylsiloxy)ethyl>-2-(tert-butyldimethylsiloxymethyl)-2-penem-3-carboxylate | 105420-56-2 | C28H44N2O7SSi2 | 608.904 |
4-乙酰氧基氮杂环丁酮 | (3R,4R)-3-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]-4-acetoxyazetidin-2-one | 76855-69-1 | C13H25NO4Si | 287.431 |
—— | p-nitrobenzyl 2-<(3S,4R)-3-<(1R)-(tert-butyldimethylsiloxy)ethyl>-4-<<(2S)-N-p-nitrobenzyloxycarbonylpyrrolidin-2-yl>carbonylthio>-2-oxoazetidin-1-yl>-2-triphenylphosphoranylideneacetate | 87596-67-6 | C51H55N4O11PSSi | 991.143 |
—— | p-nitrobenzyl 2-<(3S,4R)-3-<(1R)-(tert-butyldimethylsiloxy)ethyl>-4-<<(2R)-N-p-nitrobenzyloxycarbonylpyrrolidin-2-yl>carbonylthio>-2-oxoazetidin-1-yl>-2-triphenylphosphoranylideneacetate | 105499-15-8 | C51H55N4O11PSSi | 991.143 |
—— | dl-p-nitrobenzyl 2-<(3R*,4S*)-3-<(1R*)-(tert-butyldimethylsiloxy)ethyl>-4-(5-p-nitrobenzyloxycarbonylaminopentanoylthio)-2-oxoazetidin-1-yl>-2-triphenylphosphoranylideneacetate | 81225-36-7 | C51H57N4O11PSSi | 993.159 |
—— | p-nitrobenzyl (5R,6S)-6-<(1R)-hydroxyethyl>-2-<((RS)-N-p-nitrobenzyloxycarbonylpiperidin-2-yl)methyl>-2-penem-3-carboxylate | 105420-72-2 | C29H30N4O10S | 626.644 |
—— | p-nitrobenzyl 2-<(3S,4R)-3-<(1R)-(tert-butyldimethylsiloxy)ethyl>-4- |
105439-70-1 | C52H57N4O11PSSi | 1005.17 |
—— | p-nitrobenzyl (5R,6S)-6-<(1R)-hydroxyethyl>-2-<<(2S)-N-p-nitrobenzyloxycarbonylazeitidin-2-yl>methyl>-2-penem-3-carboxylate | 105420-70-0 | C27H26N4O10S | 598.59 |
—— | p-nitrobenzyl 2-<(3S,4R)-3-<(1R)-(tert-butyldimethylsiloxy)ethyl>-4-(4-p-nitrobenzyloxycarbonylaminobutyrylthio)-2-oxoazetidin-1-yl>-2-triphenylphosphoranylideneacetate | 81225-29-8 | C50H55N4O11PSSi | 979.132 |
—— | p-nitrobenzyl (5R,6S)-6-<(1R)-hydroxyethyl>-2-<(2R)-N-p-nitrobenzyloxycarbonylpyrrolidin-2-yl>methyl-2-penem-3-carboxylate | 105420-71-1 | C28H28N4O10S | 612.617 |
—— | p-nitrobenzyl (5R,6S)-6-<(1R)-hydroxyethyl>-2-<(2S)-N-p-nitrobenzyloxycarbonylpyrrolidin-2-yl-methyl>-2-penem-3-carboxylate | 105420-64-2 | C28H28N4O10S | 612.617 |
—— | p-nitrobenzyl 2-<(3S,4R)-3-<(1R)-(tert-butyldimethylsiloxy)ethyl>-4-<((2S)-N-p-nitrobenzyloxycarbonylazeitidin-2-yl)acetylthio>-2-oxoazetidin-1-yl>-2-triphenylphosphoranylideneacetate | 105439-71-2 | C51H55N4O11PSSi | 991.143 |
—— | p-nitrobenzyl 2-<(3S,4R)-3-<(1R)-(tert-butyldimethylsiloxy)ethyl>-4-<(RS-N-p-nitrobenzyloxycarbonylpiperidin-2-yl)acetylthio>-2-oxoazetidin-1-yl>-2-triphenylphosphoranylideneacetate | 105439-72-3 | C53H59N4O11PSSi | 1019.2 |
—— | p-nitrobenzyl 2-<(3S,4R)-3-<(1R)-(tert-butyldimethylsiloxy)ethyl>-4-(3-p-nitrobenzyloxycarbonylaminopropionylthio)-2-oxoazetidin-1-yl>-2-triphenylphosphoranylideneacetate | 81225-23-2 | C49H53N4O11PSSi | 965.105 |
—— | p-nitrobenzyl 2-<(3S,4R)-3-<(1R)-(tert-butyldimethylsiloxy)ethyl>-4-<((2R)-N-p-nitrobenzyloxycarbonylpyrrolidin-2-yl)acetylthio>-2-oxoazetidin-1-yl>-2-triphenylphosphoranylideneacetate | 105499-16-9 | C52H57N4O11PSSi | 1005.17 |
—— | p-nitrobenzyl 2-<(3S,4R)-3-<(1R)-(tert-butyldimethylsiloxy)ethyl>-4-<((2S)-N-p-nitrobenzyloxycarbonylpyrrolidin-2-yl)acetylthio>-2-oxoazetidin-1-yl>-2-triphenylphosphoranylideneacetate | 105420-51-7 | C52H57N4O11PSSi | 1005.17 |
—— | p-nitrobenzyl (5R,6S)-6-<(1R)-hydroxyethyl>-2- |
105420-87-9 | C28H28N4O10S | 612.617 |
—— | p-nitrobenzyl 2-<(3S,4R)-3-<(1R)-(tert-butyldimethylsiloxy)ethyl>-4-(ethoxyacetylthio)-2-oxoazetidin-1-yl>-2-triphenylphosphoranylideneacetate | 105420-53-9 | C42H49N2O8PSSi | 800.985 |
—— | p-nitrobenzyl (5R,6S)-6-<(1R)-hydroxyethyl>-2-<(2S)-N-p-nitrobenzyloxycarbonylpyrrolidin-2-yl>-2-penem-3-carboxylate | 105420-68-6 | C27H26N4O10S | 598.59 |
—— | p-nitrobenzyl (5R,6S)-6-<(1R)-hydroxyethyl>-2-<(2S)-N-p-nitrobenzyloxycarbonylpyrrolidin-2-yl>-2-penem-3-carboxylate | 105420-68-6 | C27H26N4O10S | 598.59 |
—— | p-nitrobenzyl 2-<(3S,4R)-3-<(1R)-(tert-butyldimethylsiloxy)ethyl>-4-(tert-butyldimethylsiloxyacetylthio)-2-oxoazetidin-1-yl>-2-triphenylphosphoranylideneacetate | 105439-68-7 | C46H59N2O8PSSi2 | 887.194 |
—— | p-nitrobenzyl 2-<(3S,4R)-3-<(1R)-(tert-butyldimethylsiloxy)ethyl>-4-<(RS-N-p-nitrobenzyloxycarbonylpiperidin-2-yl)carbonylthio>-2-oxoazetidin-1-yl>-2-hydroxyacetate | 105420-48-2 | C34H44N4O12SSi | 760.894 |
—— | p-nitrobenzyl 2-<(3S,4R)-3-<(1R)-(tert-butyldimethylsiloxy)ethyl>-4-(propionylthio)-2-oxoazetidin-1-yl>-2-triphenylphosphoranylideneacetate | 105420-52-8 | C41H47N2O7PSSi | 770.959 |
—— | p-nitrobenzyl (5R,6S)-6-<(1R)-hydroxyethyl>-2-(2-p-nitrobenzyloxycarbonylaminoethyl)-2-penem-3-carboxylate | 81225-25-4 | C25H24N4O10S | 572.552 |
—— | p-nitrobenzyl 2-<(3S,4R)-3-<(1R)-(tert-butyldimethylsiloxy)ethyl>-4-<<(2S)-N-p-nitrobenzyloxycarbonylpyrrolidin-2-yl>carbonylthio>-2-oxoazetidin-1-yl>-2-hydroxyacetate | 87596-65-4 | C33H42N4O12SSi | 746.868 |
1-哌啶羧酸,2-[2-[[3-[1-[[(1,1-二甲基乙基)二甲基甲硅烷基]氧代]乙基]-1-[1-羟基-2-[(4-硝基苯基)甲氧基]-2-羰基乙基]-4-羰基-2-吖丁啶基]硫代]-2-羰基乙基]-,(4-硝基苯基)甲基酯 | p-nitrobenzyl 2-<(3S,4R)-3-<(1R)-(tert-butyldimethylsiloxy)ethyl>-4-<(RS-N-p-nitrobenzyloxycarbonylpiperidin-2-yl)acetylthio>-2-oxoazetidin-1-yl>-2-hydroxyacetate | 105420-50-6 | C35H46N4O12SSi | 774.921 |
—— | p-nitrobenzyl (5R,6S)-6-<(1R)-hydroxyethyl>-2-(3-p-nitrobenzyloxycarbonylaminopropan-1-yl)-2-penem-3-carboxylate | 81225-31-2 | C26H26N4O10S | 586.579 |
—— | p-nitrobenzyl 2-<(3S,4R)-3-<(1R)-(tert-butyldimethylsiloxy)ethyl>-4-<((2S)-N-p-nitrobenzyloxycarbonylazeitidin-2-yl)acetylthio>-2-oxoazetidin-1-yl>-2-hydroxyacetate | 105420-49-3 | C33H42N4O12SSi | 746.868 |
1-吡咯烷羧酸,2-[2-[[3-[1-[[(1,1-二甲基乙基)二甲基甲硅烷基]氧代]乙基]-1-[1-羟基-2-[(4-硝基苯基)甲氧基]-2-羰基乙基]-4-羰基-2-吖丁啶基]硫代]-2-羰基乙基]-,(4-硝基苯基)甲基酯 | p-nitrobenzyl 2-<(3S,4R)-3-<(1R)-(tert-butyldimethylsiloxy)ethyl>-4-<((2R)-N-p-nitrobenzyloxycarbonylpyrrolidin-2-yl)acetylthio>-2-oxoazetidin-1-yl>-2-hydroxyacetate | 105439-66-5 | C34H44N4O12SSi | 760.894 |
—— | p-nitrobenzyl (5R,6S)-6-<(1R)-hydroxyethyl>-2-(4-p-nitrobenzyloxycarbonylaminobutan-1-yl)-2-penem-3-carboxylate | 81225-39-0 | C27H28N4O10S | 600.606 |
—— | dl-p-nitrobenzyl 2-<(3R*,4S*)-3-<(1R*)-(tert-butyldimethylsiloxy)ethyl>-4-(5-p-nitrobenzyloxycarbonylaminopentanoylthio)-2-oxoazetidin-1-yl>-2-hydroxyacetate | 81225-35-6 | C33H44N4O12SSi | 748.883 |
—— | p-nitrobenzyl (5R,6S)-6-<(1R)-hydroxyethyl>-2-ethoxymethyl-2-penem-3-carboxylate | 105420-66-4 | C18H20N2O7S | 408.432 |
—— | p-nitrobenzyl 2-<(3S,4R)-3-<(1R)-(tert-butyldimethylsiloxy)ethyl>-4-(3-p-nitrobenzyloxycarbonylaminopropionylthio)-2-oxoazetidin-1-yl>-2-hydroxyacetate | 81225-22-1 | C31H40N4O12SSi | 720.83 |
—— | p-nitrobenzyl 2-<(3S,4R)-3-<(1R)-(tert-butyldimethylsiloxy)ethyl>-4-(4-p-nitrobenzyloxycarbonylaminobutyrylthio)-2-oxoazetidin-1-yl>-2-hydroxyacetate | 81225-28-7 | C32H42N4O12SSi | 734.857 |
—— | p-nitrobenzyl (5R,6S)-6-<(1R)-hydroxyethyl>-2-ethyl-2-penem-3-carboxylate | 105420-65-3 | C17H18N2O6S | 378.406 |
—— | p-nitrobenzyl 2-<(3S,4R)-3-<(1R)-(tert-butyldimethylsiloxy)ethyl>-4-(tert-butyldimethylsiloxyacetylthio)-2-oxoazetidin-1-yl>-2-hydroxyacetate | 105420-46-0 | C28H46N2O9SSi2 | 642.918 |
—— | p-nitrobenzyl 2-<(3S,4R)-3-<(1R)-(tert-butyldimethylsiloxy)ethyl>-4-(ethoxyacetylthio)-2-oxoazetidin-1-yl>-2-hydroxyacetate | 105420-47-1 | C24H36N2O9SSi | 556.709 |
—— | p-nitrobenzyl 2-<(3S,4R)-3-<(1R)-(tert-butyldimethylsiloxy)ethyl>-4-propionylthio-2-oxoazetidin-1-yl>-2-hydroxyacetate | 105420-45-9 | C23H34N2O8SSi | 526.683 |
—— | (S)-2-{(2R,3S)-3-[(R)-1-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-1-[chloro-(4-nitro-benzyloxycarbonyl)-methyl]-4-oxo-azetidin-2-ylsulfanylcarbonyl}-pyrrolidine-1-carboxylic acid 4-nitro-benzyl ester | 87596-66-5 | C33H41ClN4O11SSi | 765.313 |
—— | (R)-2-{(2R,3S)-3-[(R)-1-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-1-[chloro-(4-nitro-benzyloxycarbonyl)-methyl]-4-oxo-azetidin-2-ylsulfanylcarbonylmethyl}-pyrrolidine-1-carboxylic acid 4-nitro-benzyl ester | 105439-67-6 | C34H43ClN4O11SSi | 779.34 |
—— | (5R,6S)-6-<(1R)-hydroxyethyl>-2-<(RS-piperidin-2-yl)methyl>-2-penem-3-carboxylic acid | 105420-79-9 | C14H20N2O4S | 312.39 |
—— | (5R,6S)-6-<(1R)-hydroxyethyl>-2-<(2S)-pyrrolidin-2-yl>-2-penem-3-carboxylic acid | 105420-76-6 | C12H16N2O4S | 284.336 |
—— | (5R,6S)-6-<(1R)-hydroxyethyl>-2-<(2R)-pyrrolidin-2-yl>-2-penem-3-carboxylic acid | 91871-67-9 | C12H16N2O4S | 284.336 |
—— | (5R,6S)-6-<(1R)-hydroxyethyl>-2-<<(2S)-pyrrolidin-2-yl>-methyl>-2-penem-3-carboxyic acid | 105420-73-3 | C13H18N2O4S | 298.363 |
—— | (5R,6S)-6-<(1R)-hydroxyethyl>-2-<(2R)-pyrrolidin-2-yl>methyl-2-penem-3-carboxylic acid | 105420-78-8 | C13H18N2O4S | 298.363 |
—— | (5R,6S)-6-<(1R)-hydroxyethyl>-2-<<(2S)-azeitidin-2-yl>methyl>-2-penem-3-carboxylic acid | 105420-77-7 | C12H16N2O4S | 284.336 |
—— | (5R,6S)-6-<(1R)-hydroxyethyl>-2- |
91871-66-8 | C13H18N2O4S | 298.363 |
—— | (5R,6S)-6-<(1R)-hydroxyethyl>-2-(2-aminoethyl)-2-penem-3-carboxylic acid | 81225-26-5 | C10H14N2O4S | 258.298 |
—— | (5R,6S)-6-<(1R)-hydroxyethyl>-2-(3-aminopropan-1-yl)-2-penem-3-carboxylic acid | 81225-32-3 | C11H16N2O4S | 272.325 |
—— | (5R,6S)-6-<(1R)-hydroxyethyl>-2-(4-aminobutan-1-yl)-2-penem-3-carboxylic acid | 75940-09-9 | C12H18N2O4S | 286.352 |
Aldol condensation of the magnesium enolate derived from anhydro-6,6-dibromopenicillin with acetaldehyde allows for the stereospecific introduction of a 1-R-hydroxyethyl substituent at C-6. Protection of the hydroxy group followed by reductive dehalogenation provides anhydro-6(α)-[(1-R)-(tert;-butyldimethylsilyloxy)-ethyl]-penicillin, an intermediate in the synthesis of thienamycin. A high yield conversion of this anhydro derivative to (4-R)-acetoxy-(3-S)-[(1-R)-(tert-butyldimethylsilyloxy-ethyl]-azetidin-2-one (5) is also reported.
The 4-chloroazetidinone 10, a very reactive chiral intermediate for 1-β-methylcarbapenems (1b), was easily prepared and isolated as a solid crystalline compound from the corresponding sulfide 5. Another chiral intermediate (16d) bearing the 1-β-methyl moiety was prepared by stereoselective aldol type condensation of either azetidinone 4 or 10 with metal enolates 14 (R = S—Bu′, M = ZrCp2Cl, [Formula: see text], and SnBr). The β/α ratios were 9:1, 3:1, 2:1 respectively.