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【结 构 式】 
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【分子编号】48235 【品名】(3S)-3-[(tert-butoxycarbonyl)amino]-3-[4-[(2R,4R)-1-(tert-butoxycarbonyl)-4-hydroxypyrrolidinyl]phenyl]propionic acid 【CA登记号】 |
【 分 子 式 】C23H34N2O7 【 分 子 量 】450.53224 【元素组成】C 61.32% H 7.61% N 6.22% O 24.86% |
合成路线1
该中间体在本合成路线中的序号：(XVI)Silylation of 4(R)-hydroxy-2-pyrrolidone (I) with TBDMS-Cl and imidazole in DMF gives the silyl ether (II), which is protected at the NH group with Boc2O, TEA and DMAP in acetonitrile to yield the protected pyrrolidone derivative (III). Reaction of pyrrolidone (III) with the Grignard reagent (IV) in THF affords the 2-hydroxypyrrolidine adduct (V) in equilibrium with an open-chain form (VI). Reduction of the ketonic group of (VI) with NaBH4 in methanol in the same vessel provides the alcohol (VII), which is cyclized by means of MsCl and TEA in dichloromethane and then treated with TsOH in THF/H2O to furnish the pyrrolidine-benzaldehyde (VIII). The Wittig condensation of the aldehyde group of (VIII) with the phosphonate (IX) by means of NaH in THF gives the cinnamic ester derivative (X), which is desilylated with TBAF in THF to yield the hydroxy pyrrolidine (XI). Stereo-controlled condensation of (XI) with the chiral amine (XII) by means of BuLi in THF affords the N-alkylated b-amino ester (XIII), which is debenzylated with H2 over Pd(OH)2/C in HOAc/methanol to provide the free amino ester (XIV). The protection of the NH2 group of (XIV) with Boc2O and TEA in dioxane/water gives the N-protected amino ester (XV), which is hydrolyzed with NaOH in hot ethanol to afford the carboxylic acid (XVI).
| 【1】 Yamada, K.; Miura, K.; Nishimura, I.; Shimizu, A.; Morishima, H.; Abe, S.; Nakajima, S.; Sakuraba, S.; Imamura, H.; Sato, H.; Sugimoto, Y.; Stereoselective synthesis of a broad spectrum 1 beta-methylcarbapenem, J-114,870. Tetrahedron 2000, 56, 39, 7705. |
| 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) | 48236 | (R)-4-hydroxy-2-pyrrolidinone | 22677-21-0 | C4H7NO2 | 详情 | 详情 |
| (II) | 48237 | (4R)-4-[[tert-butyl(dimethyl)silyl]oxy]-2-pyrrolidinone | C10H21NO2Si | 详情 | 详情 | |
| (III) | 30850 | tert-butyl (4R)-4-[[tert-butyl(dimethyl)silyl]oxy]-2-oxo-1-pyrrolidinecarboxylate | C15H29NO4Si | 详情 | 详情 | |
| (IV) | 30851 | bromo[4-(dimethoxymethyl)phenyl]magnesium | C9H11BrMgO2 | 详情 | 详情 | |
| (V) | 48228 | tert-butyl (4R)-4-[[tert-butyl(dimethyl)silyl]oxy]-2-[4-(dimethoxymethyl)phenyl]-2-hydroxy-1-pyrrolidinecarboxylate | C24H41NO6Si | 详情 | 详情 | |
| (VI) | 48229 | tert-butyl (2R)-2-[[tert-butyl(dimethyl)silyl]oxy]-4-[4-(dimethoxymethyl)phenyl]-4-oxobutylcarbamate | C24H41NO6Si | 详情 | 详情 | |
| (VII) | 43977 | tert-butyl (2R)-2-[[tert-butyl(dimethyl)silyl]oxy]-4-[4-(dimethoxymethyl)phenyl]-4-hydroxybutylcarbamate | C24H43NO6Si | 详情 | 详情 | |
| (VIII) | 30852 | tert-butyl (2R,4R)-4-[[tert-butyl(dimethyl)silyl]oxy]-2-(4-formylphenyl)-1-pyrrolidinecarboxylate | C22H35NO4Si | 详情 | 详情 | |
| (IX) | 25637 | tert-butyl 2-(diethoxyphosphoryl)acetate | 6273-47-8 | C10H21O5P | 详情 | 详情 |
| (X) | 48230 | tert-butyl (2R,4R)-2-[4-[(E)-3-(tert-butoxy)-3-oxo-1-propenyl]phenyl]-4-[[tert-butyl(dimethyl)silyl]oxy]-1-pyrrolidinecarboxylate | C28H45NO5Si | 详情 | 详情 | |
| (XI) | 48231 | tert-butyl (2R,4R)-2-[4-[(E)-3-(tert-butoxy)-3-oxo-1-propenyl]phenyl]-4-hydroxy-1-pyrrolidinecarboxylate | C22H31NO5 | 详情 | 详情 | |
| (XII) | 47881 | (1R)-N-benzyl-1-phenyl-1-ethanamine; N-benzyl-N-[(1R)-1-phenylethyl]amine | C15H17N | 详情 | 详情 | |
| (XIII) | 48232 | tert-butyl (2R,4R)-2-[4-[(1S)-1-[benzyl[(1R)-1-phenylethyl]amino]-3-(tert-butoxy)-3-oxopropyl]phenyl]-4-hydroxy-1-pyrrolidinecarboxylate | C37H48N2O5 | 详情 | 详情 | |
| (XIV) | 48233 | tert-butyl (2R,4R)-2-[4-[(1S)-1-amino-3-(tert-butoxy)-3-oxopropyl]phenyl]-4-hydroxy-1-pyrrolidinecarboxylate | C22H34N2O5 | 详情 | 详情 | |
| (XV) | 48234 | tert-butyl (2R,4R)-2-(4-[(1S)-3-(tert-butoxy)-1-[(tert-butoxycarbonyl)amino]-3-oxopropyl]phenyl)-4-hydroxy-1-pyrrolidinecarboxylate | C27H42N2O7 | 详情 | 详情 | |
| (XVI) | 48235 | (3S)-3-[(tert-butoxycarbonyl)amino]-3-[4-[(2R,4R)-1-(tert-butoxycarbonyl)-4-hydroxypyrrolidinyl]phenyl]propionic acid | C23H34N2O7 | 详情 | 详情 |
合成路线2
该中间体在本合成路线中的序号：(XVI)Reaction of the carboxylic acid (XVI) with MsCl and TEA in THF yields the fully protected mixed anhydride (XVII). The chemo-selective ammonolysis of anhydride (XVII) gives amide (XVIII), which by displacement of the mesyloxy group with potassium thioacetate in hot DMF yields the thioacetate (XIX). Removal of the Boc protecting groups of (XIX) with HCl in ethyl acetate affords compound (XX), which is reprotected with allyl chloroformate (XXI) and TEA in dichloromethane to provide the bis(allyloxycarbonyl) compound (XXII). Hydrolysis of the thioacetate group of (XXII) with NaOH in methanol gives the thiol compound (XXIII), which is condensed with the carbape- nem diphenyl phosphate (XXIV) by means of DIEA in acetonitrile to provide the expected adduct (XXV). Finally, this compound is deprotected by a treatment with Bu3SnH and PdCl2(PPh3)2 in dichloromethane/water.
| 【1】 Yamada, K.; Miura, K.; Nishimura, I.; Shimizu, A.; Morishima, H.; Abe, S.; Nakajima, S.; Sakuraba, S.; Imamura, H.; Sato, H.; Sugimoto, Y.; Stereoselective synthesis of a broad spectrum 1 beta-methylcarbapenem, J-114,870. Tetrahedron 2000, 56, 39, 7705. |
| 中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
|---|---|---|---|---|---|---|
| (XIV) | 32617 | allyl (4R,5R,6S)-3-[(diphenoxyphosphoryl)oxy]-6-[(1R)-1-hydroxyethyl]-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate | C25H26NO8P | 详情 | 详情 | |
| (XVI) | 48235 | (3S)-3-[(tert-butoxycarbonyl)amino]-3-[4-[(2R,4R)-1-(tert-butoxycarbonyl)-4-hydroxypyrrolidinyl]phenyl]propionic acid | C23H34N2O7 | 详情 | 详情 | |
| (XVII) | 48238 | tert-butyl (2R,4R)-2-(4-[(1S)-1-[(tert-butoxycarbonyl)amino]-3-[(methylsulfonyl)oxy]-3-oxopropyl]phenyl)-4-[(methylsulfonyl)oxy]-1-pyrrolidinecarboxylate | C25H38N2O11S2 | 详情 | 详情 | |
| (XVIII) | 48239 | tert-butyl (2R,4R)-2-(4-[(1S)-3-amino-1-[(tert-butoxycarbonyl)amino]-3-oxopropyl]phenyl)-4-[(methylsulfonyl)oxy]-1-pyrrolidinecarboxylate | C24H37N3O8S | 详情 | 详情 | |
| (XIX) | 48240 | tert-butyl (2R,4S)-4-(acetylsulfanyl)-2-(4-[(1S)-3-amino-1-[(tert-butoxycarbonyl)amino]-3-oxopropyl]phenyl)-1-pyrrolidinecarboxylate | C25H37N3O6S | 详情 | 详情 | |
| (XX) | 48241 | S-((3S,5R)-5-[4-[(1S)-1,3-diamino-3-oxopropyl]phenyl]pyrrolidinyl) ethanethioate | C15H21N3O2S | 详情 | 详情 | |
| (XXI) | 38115 | 3-[(chlorocarbonyl)oxy]-1-propene | 2937-50-0 | C4H5ClO2 | 详情 | 详情 |
| (XXII) | 48242 | allyl (2R,4S)-4-(acetylsulfanyl)-2-[4-((1S)-1-[[(allyloxy)carbonyl]amino]-3-amino-3-oxopropyl)phenyl]-1-pyrrolidinecarboxylate | C23H29N3O6S | 详情 | 详情 | |
| (XXIII) | 48243 | C21H27N3O5S | 详情 | 详情 | ||
| (XXV) | 48244 | allyl (4R,5S,6S)-3-([(3S,5R)-1-[(allyloxy)carbonyl]-5-[4-((1S)-1-[[(allyloxy)carbonyl]amino]-3-amino-3-oxopropyl)phenyl]pyrrolidinyl]sulfanyl)-6-[(1R)-1-hydroxyethyl]-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate | C34H42N4O9S | 详情 | 详情 |