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【结 构 式】 
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【分子编号】33055 【品名】1-[[(chlorocarbonyl)oxy]methyl]-4-nitrobenzene 【CA登记号】4457-32-3 |
【 分 子 式 】C8H6ClNO4 【 分 子 量 】215.59268 【元素组成】C 44.57% H 2.81% Cl 16.44% N 6.5% O 29.68% |
合成路线1
该中间体在本合成路线中的序号：(XXI)Coupling of carbapenem phosphate (VIII) with thiol (XIII) using diisopropylethylamine gave rise to sulfide (XIX). Hydrogenolysis of the p-nitrobenzyl group of (XIX) with simultaneous azide reduction in the presence of Pd/C provided (XX). Treatment of p-nitrobenzyl chloroformate (XXI) with p-nitrophenol (XXII) afforded the nitrophenyl carbonate (XXIII), which was coupled with L-valine (XXIV), yielding carbamate (XXV). Activation of (XXV) with N-hydroxy succinimide and DCC then produced the succinimidyl ester (XXVI). Amine (XX) was coupled with succinimidyl ester (XXVI) to furnish amide (XXVII). The p-nitrobenzyl ester was finally removed by hydrogenation over Pd/C to provide the title compound.
| 【1】 Lin, Y.-I.; et al.; Peptidic prodrugs of novel aminomethyl-THF 1beta-methylcarbapenems. Bioorg Med Chem Lett 1997, 7, 13, 1665. |
| 【2】 Lin, Y.-I.; Bitha, P.; Sakya, S.; Strohmeyer, T.W.; Bush, K. (American Cyanamid Co.); Novel 2-thiosubstd. carbapenems. CA 2118961; EP 0617036; JP 1994321948; US 5602118 . |
| 中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
|---|---|---|---|---|---|---|
| (VIII) | 13224 | 4-nitrobenzyl (4R,5R,6S)-3-[(diphenoxyphosphoryl)oxy]-6-[(1R)-1-hydroxyethyl]-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate | 90776-59-3 | C29H27N2O10P | 详情 | 详情 |
| (XIII) | 33047 | (2R,3R)-2-(azidomethyl)tetrahydro-3-furanthiol; (2R,3R)-2-(azidomethyl)tetrahydro-3-furanylhydrosulfide | C5H9N3OS | 详情 | 详情 | |
| (XIX) | 33053 | 4-nitrobenzyl (4R,5S,6S)-3-[[(2R,3R)-2-(azidomethyl)tetrahydro-3-furanyl]sulfanyl]-6-[(1R)-1-hydroxyethyl]-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate | C22H25N5O7S | 详情 | 详情 | |
| (XX) | 33054 | (4R,5S,6S)-3-[[(2R,3R)-2-(aminomethyl)tetrahydro-3-furanyl]sulfanyl]-6-[(1R)-1-hydroxyethyl]-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid | C15H22N2O5S | 详情 | 详情 | |
| (XXI) | 33055 | 1-[[(chlorocarbonyl)oxy]methyl]-4-nitrobenzene | 4457-32-3 | C8H6ClNO4 | 详情 | 详情 |
| (XXII) | 11236 | 4-Nitrophenol; p-Nitrophenol | 100-02-7 | C6H5NO3 | 详情 | 详情 |
| (XXIII) | 33056 | 4-nitrobenzyl 4-nitrophenyl carbonate | C14H10N2O7 | 详情 | 详情 | |
| (XXIV) | 21056 | (R)-(-)-Valine; D-Valine; (R)-alpha-Aminoisovaleric acid | 640-68-6 | C5H11NO2 | 详情 | 详情 |
| (XXV) | 33057 | (2S)-3-methyl-2-([[(4-nitrobenzyl)oxy]carbonyl]amino)butyric acid | C13H16N2O6 | 详情 | 详情 | |
| (XXVI) | 33058 | 4-nitrobenzyl (1S)-1-[[(2,5-dioxo-1-pyrrolidinyl)oxy]carbonyl]-2-methylpropylcarbamate | C17H19N3O8 | 详情 | 详情 | |
| (XXVII) | 33059 | (4R,5S,6S)-6-[(1R)-1-hydroxyethyl]-4-methyl-3-[[(2R,3R)-2-([[(2S)-3-methyl-2-([[(4-nitrobenzyl)oxy]carbonyl]amino)butanoyl]amino]methyl)tetrahydro-3-furanyl]sulfanyl]-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid | C28H36N4O10S | 详情 | 详情 |
合成路线2
该中间体在本合成路线中的序号：(IV)Reductive amination of N-Boc-4-piperidone (I) with allylamine (II) in the presence of sodium triacetoxyborohydride afforded aminopiperidine (III), which was acylated with 4-nitrobenzyl chloroformate (IV) to yield carbamate (V). Removal of the Boc group of (V) by means of a methanolic solution of HCl, prepared from acetyl chloride and MeOH, provided piperidine (VI).
| 【1】 Finke, P.E.; Mills, S.G.; Caldwell, C.G.; MacCoss, M.; Wang, L.; Kothandaraman, S.; Kim, D.; Oates, B. (Merck & Co., Inc.); Cyclic amine modulators of chemokine receptor activity. EP 1052992; US 6140349; WO 9938514 . |
| 中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
|---|---|---|---|---|---|---|
| (I) | 18620 | tert-butyl 4-oxo-1-piperidinecarboxylate;BOC-Piperidone;N-(tert-Butoxycarbonyl)-4-piperidone; N-Boc-4-piperidone | 79099-07-3 | C10H17NO3 | 详情 | 详情 |
| (II) | 13672 | Allylamine; 2-Propen-1-amine | 107-11-9 | C3H7N | 详情 | 详情 |
| (III) | 43903 | tert-butyl 4-(allylamino)-1-piperidinecarboxylate | C13H24N2O2 | 详情 | 详情 | |
| (IV) | 33055 | 1-[[(chlorocarbonyl)oxy]methyl]-4-nitrobenzene | 4457-32-3 | C8H6ClNO4 | 详情 | 详情 |
| (V) | 43904 | tert-butyl 4-(allyl[[(4-nitrobenzyl)oxy]carbonyl]amino)-1-piperidinecarboxylate | C21H29N3O6 | 详情 | 详情 | |
| (VI) | 43905 | 4-nitrobenzyl allyl(4-piperidinyl)carbamate | C16H21N3O4 | 详情 | 详情 |
合成路线3
该中间体在本合成路线中的序号：(IV)Reductive amination of N-Boc-4-piperidone (I) with allyl amine (II) in the presence of sodium triacetoxyborohydride gave aminopiperidine (III), which was condensed with 4-nitrobenzyl chloroformate (IV) to afford carbamate (V). The Boc group of (V) was then cleaved by treatment with methanolic HCl to produce intermediate piperidine (VI). Alternatively, the condensation of 1-Boc-piperidine-4-amine (VII) with chloroformate (IV) gives carbamate (VIII), which is allylated with allyl chloride (IX) and NaH in THF, yielding the already reported carbamate (V).
| 【1】 Chen, P.; Dorn, C.P. Jr.; Caldwell, C.G.; et al.; Synthesis and evaluation of CCR5 antagonists having potent in vitro antiviral activity. 220th ACS Natl Meet (Aug 20 2000, Washington DC) 2000, Abst MEDI 85. |
| 【2】 Finke, P.E.; Mills, S.G.; Caldwell, C.G.; MacCoss, M.; Wang, L.; Kothandaraman, S.; Kim, D.; Oates, B. (Merck & Co., Inc.); Cyclic amine modulators of chemokine receptor activity. EP 1052992; US 6140349; WO 9938514 . |
| 中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
|---|---|---|---|---|---|---|
| (I) | 18620 | tert-butyl 4-oxo-1-piperidinecarboxylate;BOC-Piperidone;N-(tert-Butoxycarbonyl)-4-piperidone; N-Boc-4-piperidone | 79099-07-3 | C10H17NO3 | 详情 | 详情 |
| (II) | 13672 | Allylamine; 2-Propen-1-amine | 107-11-9 | C3H7N | 详情 | 详情 |
| (III) | 43903 | tert-butyl 4-(allylamino)-1-piperidinecarboxylate | C13H24N2O2 | 详情 | 详情 | |
| (IV) | 33055 | 1-[[(chlorocarbonyl)oxy]methyl]-4-nitrobenzene | 4457-32-3 | C8H6ClNO4 | 详情 | 详情 |
| (V) | 43904 | tert-butyl 4-(allyl[[(4-nitrobenzyl)oxy]carbonyl]amino)-1-piperidinecarboxylate | C21H29N3O6 | 详情 | 详情 | |
| (VI) | 43905 | 4-nitrobenzyl allyl(4-piperidinyl)carbamate | C16H21N3O4 | 详情 | 详情 | |
| (VII) | 28414 | 4-Amino-1-N-Boc-piperidine; tert-butyl 4-amino-1-piperidinecarboxylate; N-Boc-4-aminopiperidine | 87120-72-7 | C10H20N2O2 | 详情 | 详情 |
| (VIII) | 43906 | tert-butyl 4-([[(4-nitrobenzyl)oxy]carbonyl]amino)-1-piperidinecarboxylate | C18H25N3O6 | 详情 | 详情 | |
| (IX) | 13235 | Allyl chloride; 3-Chloro-1-propene | 107-05-1 | C3H5Cl | 详情 | 详情 |
合成路线4
该中间体在本合成路线中的序号：(VII)The title compound has been prepared starting from the known azetidinone (I). The lithium enolate of ester (I) was acylated with pivaloyl chloride (II) at low temperature to afford keto ester (III). The silyl protecting group of (III) was then removed by treatment with tetrabutylammonium fluoride, yielding alcohol (IV). Inversion of the configuration of alcohol (IV) was accomplished by Mitsunobu coupling with formic acid to produce the formate ester (V), which was subsequently hydrolyzed to the desired alcohol (VI) under acidic conditions. Protection of alcohol (VI) with p-nitrobenzyl chloroformate (VII) gave carbonate (VIII). Chlorination of (VIII) with concomitant oxidative cleavage of the methylthio group at -40 C led to the chloroazetidine (IX). Cyclization of (IX) to the key oxapenem bicyclic system (X) was then performed by treatment with potassium tert-butoxide in cold t-BuOH/THF.
| 【1】 Pfaendler, H.R. (Eli Lilly and Company); (1'S)-Hydroxyalkyloxapenem-3-carboxylic acids and their use as beta-lactamase inhibitors. DE 4142423; EP 0548790 . |
| 中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
|---|---|---|---|---|---|---|
| (IXa) | 54851 | 4-nitrobenzyl 2-{(2R,3S)-2-chloro-3-[(1S)-1-({[(4-nitrobenzyl)oxy]carbonyl}oxy)ethyl]-4-oxoazetidinyl}-4,4-dimethyl-3-oxopentanoate | C27H28ClN3O11 | 详情 | 详情 | |
| (IXb) | 54852 | 4-nitrobenzyl 2-{(2S,3S)-2-chloro-3-[(1S)-1-({[(4-nitrobenzyl)oxy]carbonyl}oxy)ethyl]-4-oxoazetidinyl}-4,4-dimethyl-3-oxopentanoate | C27H28ClN3O11 | 详情 | 详情 | |
| (Xa) | 54853 | 4-nitrobenzyl (5R,6R)-3-(tert-butyl)-6-[(1S)-1-({[(4-nitrobenzyl)oxy]carbonyl}oxy)ethyl]-7-oxo-4-oxa-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate | C27H27N3O11 | 详情 | 详情 | |
| (Xb) | 54854 | 4-nitrobenzyl (5S,6R)-3-(tert-butyl)-6-[(1S)-1-({[(4-nitrobenzyl)oxy]carbonyl}oxy)ethyl]-7-oxo-4-oxa-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate | C27H27N3O11 | 详情 | 详情 | |
| (I) | 54842 | 4-nitrobenzyl 2-[(2R,3S)-3-((1R)-1-{[tert-butyl(dimethyl)silyl]oxy}ethyl)-2-(methylsulfanyl)-4-oxoazetidinyl]acetate | C21H32N2O6SSi | 详情 | 详情 | |
| (II) | 13597 | 2,2-Dimethylpropanoyl chloride; Pivaloyl chloride | 3282-30-2 | C5H9ClO | 详情 | 详情 |
| (III) | 54843 | 4-nitrobenzyl 2-[(2R,3S)-3-((1R)-1-{[tert-butyl(dimethyl)silyl]oxy}ethyl)-2-(methylsulfanyl)-4-oxoazetidinyl]-4,4-dimethyl-3-oxopentanoate | C26H40N2O7SSi | 详情 | 详情 | |
| (IV) | 54844 | 4-nitrobenzyl 2-[(2R,3S)-3-[(1R)-1-hydroxyethyl]-2-(methylsulfanyl)-4-oxoazetidinyl]-4,4-dimethyl-3-oxopentanoate | C20H26N2O7S | 详情 | 详情 | |
| (V) | 54848 | 4-nitrobenzyl 2-[(2R,3S)-3-[(1S)-1-(formyloxy)ethyl]-2-(methylsulfanyl)-4-oxoazetidinyl]-4,4-dimethyl-3-oxopentanoate | C21H26N2O8S | 详情 | 详情 | |
| (VI) | 54849 | 4-nitrobenzyl 2-[(2R,3S)-3-[(1S)-1-hydroxyethyl]-2-(methylsulfanyl)-4-oxoazetidinyl]-4,4-dimethyl-3-oxopentanoate | C20H26N2O7S | 详情 | 详情 | |
| (VII) | 33055 | 1-[[(chlorocarbonyl)oxy]methyl]-4-nitrobenzene | 4457-32-3 | C8H6ClNO4 | 详情 | 详情 |
| (VIII) | 54850 | 4-nitrobenzyl 4,4-dimethyl-2-{(2R,3S)-2-(methylsulfanyl)-3-[(1S)-1-({[(4-nitrobenzyl)oxy]carbonyl}oxy)ethyl]-4-oxoazetidinyl}-3-oxopentanoate | C28H31N3O11S | 详情 | 详情 |