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【结 构 式】 
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【分子编号】13208 【品名】bis(4-nitrobenzyl) 4-sulfanyl-1,2-pyrazolidinedicarboxylate 【CA登记号】 |
【 分 子 式 】C19H18N4O8S 【 分 子 量 】462.44008 【元素组成】C 49.35% H 3.92% N 12.12% O 27.68% S 6.93% |
合成路线1
该中间体在本合成路线中的序号：(XX)Compound (XIX) reacts with 4-mercapto-N,N-bis(p-nitrobenzyloxycarbonyl)pyrazolidine (XX) in the presence of diisopropylethylamine to give p-nitrobenzyl (1R,5R,6S)-2-[[N,N-bis(p-nitrobenzyloxycarbonyl)pyrazolidin-4-yl]thio]-6-[1(R)-hydroxyethyl]-1-methylcarbapen-2-em-3-carboxylate (XXIII). Compound (XXIII) is reduced with H2 over Pd/C to give (1R,5R,6S)-2-[[N,N-bis(p-nitrobenzyloxycarbonyl)pyrazolidin-4-yl]thio]-6-[1(R)-hydroxyethyl]-1-methylcarbapen-2-em-3-carboxylate (XXIV), which is finally reacted with ethylformimidate hydrochloride (XXV). Compound (XX) is obtained from epichlorohydrin (XXI) by treatment with hydrazine monohydrate followed by reaction with p-nitrobenzyloxycarbonyl chloride to give 4-hydroxy-N,N-bis(p-nitrobenzyloxycarbonyl)pyrazolidine (XXII), which is subsequently treated with methanesulfonyl chloride and triethylamine in dichloromethane, potassium acetate in acetone and sodium methoxide in methanol-THF. Compound (XX) can also be obtained from hydrazine hydrate using a longer alternative procedure.
| 【1】 Kumagai, T.; Matsunaga, H.; Machida, Y.; Nagase, Y.; Hikida, M.; Nagao, Y. (Lederle (Japan), Ltd.); (1R,5S,6S)-2-(Substd. thio)-6-[(R)-1-hydroxy-ethyl]-1-methyl-carbapenem-3-carboxylic-acid derivatives. AU 8814428; EP 0289801; JP 1989025779; US 4925836 . |
| 【2】 Abe, T.; Matsunaga, H.; Kumagai, T.; Nagase, Y. (Lederle (Japan), Ltd.); Method of preparation of carbapenem cpds. JP 1990088578 . |
| 【3】 Hayashi, T.; Shimada, O.; Inoue, Y.; Nagao, Y.; Matsunaga, H.; Nagase, Y.; Kumagai, T.; Abe, T.; beta-Lactams. 3. Asymmetric total synthesis of new non-natural 1beta-methylcarbapenems exhibiting strong antimicrobial activities and stability against human renal dehydropeptidase-. J Org Chem 1992, 57, 15, 4243-9. |
| 【4】 Rabasseda, X.; Prous, J.; Castaner, J.; Biapenem. Drugs Fut 1994, 19, 7, 631. |
| 中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
|---|---|---|---|---|---|---|
| (XIX) | 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 |
| (XX) | 13208 | bis(4-nitrobenzyl) 4-sulfanyl-1,2-pyrazolidinedicarboxylate | C19H18N4O8S | 详情 | 详情 | |
| (XXI) | 10146 | Epichlorohydrin; 2-(Chloromethyl)oxirane | 106-89-8 | C3H5ClO | 详情 | 详情 |
| (XXII) | 13210 | bis(4-nitrobenzyl) 4-hydroxy-1,2-pyrazolidinedicarboxylate | C19H18N4O9 | 详情 | 详情 | |
| (XXIII) | 13211 | bis(4-nitrobenzyl) 4-([(4R,5S,6S)-6-[(1R)-1-hydroxyethyl]-4-methyl-2-[2-(4-nitrophenyl)acetyl]-7-oxo-1-azabicyclo[3.2.0]hept-2-en-3-yl]sulfanyl)-1,2-pyrazolidinedicarboxylate | C36H34N6O13S | 详情 | 详情 | |
| (XXIV) | 13212 | (4R,5S,6S)-3-[(1,2-bis[[(4-Nitrobenzyl)oxy]carbonyl]-4-pyrazolidinyl)sulfanyl]-6-[(1R)-1-hydroxyethyl]-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid | C29H29N5O12S | 详情 | 详情 | |
| (XXV) | 13213 | ethyl iminoformate | C3H7NO | 详情 | 详情 |