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【结 构 式】 
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【分子编号】57095 【品名】4-nitrobenzyl (5R,6S)-3-[(diphenoxyphosphoryl)oxy]-6-[(1R)-1-hydroxyethyl]-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate 【CA登记号】 |
【 分 子 式 】C28H25N2O10P 【 分 子 量 】580.487742 【元素组成】C 57.94% H 4.34% N 4.83% O 27.56% P 5.34% |
合成路线1
该中间体在本合成路线中的序号：(III)The reaction of (3R,5R,6S)-6-(1(R)-hydroxyethyl)-2-oxo-1-carbapenem-3-carboxylic acid p-nitrobenzyl ester (I) with diphenyl chlorophosphate by (II) means of DMAP and DIEA in DMA/dichloromethane gives the enol phosphate (III), which is condensed with 2-aminoethanethiol (IV) in DMA to yield the 2-aminoethylsulfanyl derivative (V). The reaction of (V) with benzyl formimidate (VI) by means of DIEA in DMA affords the intermediate p-nitrobenzyl ester (VII), which is finally hydrogenated with H2 over Pd/C in water/isopropanol/N-methylmorpholine to provide the target Imipemide.
| 【1】 Kumar, Y.; Tewari, N.; Rai, B.P. (Ranbaxy Laboratories Ltd.); Process for the preparation of imipenem. WO 0294828 . |
| 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) | 22686 | 4-nitrobenzyl (5R,6S)-6-[(1R)-1-hydroxyethyl]-3,7-dioxo-1-azabicyclo[3.2.0]heptane-2-carboxylate | C16H16N2O7 | 详情 | 详情 | |
| (II) | 16074 | Diphenyl phosphoryl chloride; 1,1'-Diphenylphosphoryl chloride; Chlorodiphenyl Phosphate; Diphenyl chlorophosphate; Diphenylchlorophosphate | 2524-64-3 | C12H10ClO3P | 详情 | 详情 |
| (III) | 57095 | 4-nitrobenzyl (5R,6S)-3-[(diphenoxyphosphoryl)oxy]-6-[(1R)-1-hydroxyethyl]-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate | C28H25N2O10P | 详情 | 详情 | |
| (IV) | 13186 | 2-Aminoethanethiol; 2-Amino-1-ethanethiol; 2-Aminoethylhydrosulfide; Cysteamine | 60-23-1 | C2H7NS | 详情 | 详情 |
| (V) | 57096 | 4-nitrobenzyl (5R,6S)-3-[(2-aminoethyl)sulfanyl]-6-[(1R)-1-hydroxyethyl]-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate | C18H21N3O6S | 详情 | 详情 | |
| (VI) | 57097 | benzyl iminoformate | C8H9NO | 详情 | 详情 | |
| (VII) | 57098 | 4-nitrobenzyl (5R,6S)-6-[(1R)-1-hydroxyethyl]-3-({2-[(iminomethyl)amino]ethyl}sulfanyl)-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate | C19H22N4O6S | 详情 | 详情 |