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【结 构 式】 
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【分子编号】30871 【品名】tert-butyl (2R,4R)-4-[[tert-butyl(dimethyl)silyl]oxy]-2-[4-([[methyl(dimethylene)-lambda(6)-sulfanyl]oxy]methyl)phenyl]-1-pyrrolidinecarboxylate 【CA登记号】 |
【 分 子 式 】C25H43NO4SSi 【 分 子 量 】481.77226 【元素组成】C 62.33% H 9% N 2.91% O 13.28% S 6.66% Si 5.83% |
合成路线1
该中间体在本合成路线中的序号：(VI)The protection of 4(R)-hydroxypyrrolidin-2-one (I) first with TBDMS-Cl and then with Boc2O gives the fully protected compound (II), which is condensed with the Grignard reagent of the 4-bromobenzaldehyde dimethyl acetal (III) yielding after working up the substituted benzaldehyde (IV). The reduction of (IV) with NaBH4 affords the benzyl alcohol (V), which is treated with methanesulfonyl chloride to give the corresponding mesylate (VI). The reaction of (VI) with methylamine, followed by protection with Boc2O yields the protected secondary amine (VII), which is desilylated with tetrabutylammonium fluoride to afford the pyrrolidinol (VIII). The reaction of (VIII) with MsCl gives the mesylate (IX), which is treated with potassium thioacetate to provide the acetylsulfanyl derivative (X). The hydrolysis and deprotection of (X) with HCl yields the pyrrolidinethiol (XI), which is condensed with the carbapenem phosphoric ester (XII) to afford the final 4-nitrobenzyl ester intermediate (XIII). Finally, this compound is debenzylated by hydrogenation with H2 over Pd/C.
| 【1】 Sato, H.; Morishima, H.; Sakuraba, S.; Yamada, K.; Imamura, H.; Shimizu, A.; Sugimoto, Y.; Practical synthesis of a 1beta-methylcarbapenem, J-111,225, using 4-mercapto-2-[4-(N-methylaminomethyl)phenyl]pyrrolidine as a precursor. Chem Pharm Bull 2001, 49, 4, 476. |
| 【2】 Imamura, H.; et al.; Discovery of novel trans-3,5-disubstituted pyrrolidinylthio-1beta-methylcarbapenems. Bioorg Med Chem 2000, 8, 8, 1969. |
| 【3】 Sato, H.; Shimizu, A.; Imamura, H.; et al.; J-111,225, a novel trans-3,5-disubstituted pyrrolidinylthio 1beta-methylcarbapenem; synthesis and physicochemical properties. 38th Intersci Conf Antimicrob Agents Chemother (Sept 24 1998, San Diego) 1998, Abst F-61. |
| 【4】 Imamura, H.; Ohtake, N.; Shimizu, A.; et al.; Structure-activity relationships of trans-3,5-disubstituted pyrrolidinylthio-1beta-methylcarbapenems. Part 2: J-111,225, J-114,870, J-114,871 and related compounds. Bioorg Med Chem Lett 2000, 10, 2, 115. |
| 【5】 Ushijima, R.; Sugimoto, Y.; Shimizu, A.; Kiyonaga, H.; Nagano, R.; Nakagawa, S.; Sakuraba, S.; Sato, H.; Hashizume, T.; Nakano, M.; Imamura, H.; Fukatsu, H. (Banyu Pharmaceutical Co., Ltd.); Carbapenem derivs.. EP 1048669; JP 2000143512; WO 9931106 . |
| 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) | 30864 | N-Benzyl-N-(1(R)-phenylethyl)amide lithium salt | C15H16LiN | 详情 | 详情 | |
| (II) | 30850 | tert-butyl (4R)-4-[[tert-butyl(dimethyl)silyl]oxy]-2-oxo-1-pyrrolidinecarboxylate | C15H29NO4Si | 详情 | 详情 | |
| (III) | 30851 | bromo[4-(dimethoxymethyl)phenyl]magnesium | C9H11BrMgO2 | 详情 | 详情 | |
| (IV) | 30852 | tert-butyl (2R,4R)-4-[[tert-butyl(dimethyl)silyl]oxy]-2-(4-formylphenyl)-1-pyrrolidinecarboxylate | C22H35NO4Si | 详情 | 详情 | |
| (V) | 30870 | tert-butyl (2R,4R)-4-[[tert-butyl(dimethyl)silyl]oxy]-2-[4-(hydroxymethyl)phenyl]-1-pyrrolidinecarboxylate | C22H37NO4Si | 详情 | 详情 | |
| (VI) | 30871 | tert-butyl (2R,4R)-4-[[tert-butyl(dimethyl)silyl]oxy]-2-[4-([[methyl(dimethylene)-lambda(6)-sulfanyl]oxy]methyl)phenyl]-1-pyrrolidinecarboxylate | C25H43NO4SSi | 详情 | 详情 | |
| (VII) | 30872 | tert-butyl (2R,4R)-2-(4-[[(tert-butoxycarbonyl)(methyl)amino]methyl]phenyl)-4-[[tert-butyl(dimethyl)silyl]oxy]-1-pyrrolidinecarboxylate | C28H48N2O5Si | 详情 | 详情 | |
| (VIII) | 30873 | tert-butyl (2R,4R)-2-(4-[[(tert-butoxycarbonyl)(methyl)amino]methyl]phenyl)-4-hydroxy-1-pyrrolidinecarboxylate | C22H34N2O5 | 详情 | 详情 | |
| (IX) | 30874 | tert-butyl (2R,4R)-2-(4-[[(tert-butoxycarbonyl)(methyl)amino]methyl]phenyl)-4-[[methyl(dimethylene)-lambda(6)-sulfanyl]oxy]-1-pyrrolidinecarboxylate | C25H40N2O5S | 详情 | 详情 | |
| (X) | 30875 | tert-butyl (2R,4R)-4-(acetylsulfanyl)-2-(4-[[(tert-butoxycarbonyl)(methyl)amino]methyl]phenyl)-1-pyrrolidinecarboxylate | C24H36N2O5S | 详情 | 详情 | |
| (XI) | 30876 | (3S,5R)-5-[4-[(methylamino)methyl]phenyl]pyrrolidinylhydrosulfide; (3S,5R)-5-[4-[(methylamino)methyl]phenyl]-3-pyrrolidinethiol | C12H18N2S | 详情 | 详情 | |
| (XII) | 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) | 30877 | 4-nitrobenzyl (4R,5S,6S)-6-[(1R)-1-hydroxyethyl]-4-methyl-3-[((3S,5R)-5-[4-[(methylamino)methyl]phenyl]pyrrolidinyl)sulfanyl]-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate | C29H34N4O6S | 详情 | 详情 |
合成路线2
该中间体在本合成路线中的序号：(VI)The Grignard condensation of the chiral pyrrolidinone (I) with 4-(dimethoxymethyl)phenylmagnesium bromide (II) in THF, followed by reduction with NaBH4, gives the aminoalcohol (III), which is cyclized to the pyrrolidine (IV) by means of MsCl and TEA in dichloromethane. Hydrolysis of the dimethyl acetal of (IV), followed by separation of the resulting diastereomeric mixture of aldehydes, yields the desired diastereomer (V). The reduction of (V) with NaBH4, followed by reaction with Ms-Cl in dichloromethane, affords the mesylate (VI), which by reaction with methylamine provides the secondary amine (VII). The protection of (VII) with allyl chloroformate and TEA, cleavage of the silyl-protecting group gives the hydroxy pyrrolidine (VIII), which is treated with MsCl and TEA to yield the mesylate (IX). The reaction of (IX) with potassium thioacetate in hot DMF affords the sulfanyl pyrrolidine (X), which is condensed with the penem diphenyl phosphate (XI) by means of DIEA in acetonitrile to provide the protected intermediate (XII). Finally, (XII) is converted into the target compound by reaction with PdCl2(PPh3)2 and Bu3SnH in dichloromethane/water.
| 【1】 Imamura, H.; et al.; A novel 1beta-methylcarbapenem, J-111,225: Effects of the C-3 and C-5 stereochemistry of the pyrrolidinylthio side chain on antibacterial activities. J Antibiot 2000, 53, 3, 314. |
| 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) | 30852 | tert-butyl (2R,4R)-4-[[tert-butyl(dimethyl)silyl]oxy]-2-(4-formylphenyl)-1-pyrrolidinecarboxylate | C22H35NO4Si | 详情 | 详情 | |
| (II) | 30851 | bromo[4-(dimethoxymethyl)phenyl]magnesium | C9H11BrMgO2 | 详情 | 详情 | |
| (III) | 43977 | tert-butyl (2R)-2-[[tert-butyl(dimethyl)silyl]oxy]-4-[4-(dimethoxymethyl)phenyl]-4-hydroxybutylcarbamate | C24H43NO6Si | 详情 | 详情 | |
| (IV) | 43978 | tert-butyl (4R)-4-[[tert-butyl(dimethyl)silyl]oxy]-2-[4-(dimethoxymethyl)phenyl]-1-pyrrolidinecarboxylate | C24H41NO5Si | 详情 | 详情 | |
| (V) | 30852 | tert-butyl (2R,4R)-4-[[tert-butyl(dimethyl)silyl]oxy]-2-(4-formylphenyl)-1-pyrrolidinecarboxylate | C22H35NO4Si | 详情 | 详情 | |
| (VI) | 30871 | tert-butyl (2R,4R)-4-[[tert-butyl(dimethyl)silyl]oxy]-2-[4-([[methyl(dimethylene)-lambda(6)-sulfanyl]oxy]methyl)phenyl]-1-pyrrolidinecarboxylate | C25H43NO4SSi | 详情 | 详情 | |
| (VII) | 43979 | tert-butyl (2R,4R)-4-[[tert-butyl(dimethyl)silyl]oxy]-2-[4-[(methylamino)methyl]phenyl]-1-pyrrolidinecarboxylate | C23H40N2O3Si | 详情 | 详情 | |
| (VIII) | 43980 | allyl (2R,4R)-2-(4-[[[(allyloxy)carbonyl](methyl)amino]methyl]phenyl)-4-hydroxy-1-pyrrolidinecarboxylate | C20H26N2O5 | 详情 | 详情 | |
| (IX) | 43981 | allyl (2R,4R)-2-(4-[[[(allyloxy)carbonyl](methyl)amino]methyl]phenyl)-4-[[methyl(dimethylene)-lambda(6)-sulfanyl]oxy]-1-pyrrolidinecarboxylate | C23H32N2O5S | 详情 | 详情 | |
| (X) | 43982 | allyl (2R,4S)-2-(4-[[[(allyloxy)carbonyl](methyl)amino]methyl]phenyl)-4-sulfanyl-1-pyrrolidinecarboxylate | C20H26N2O4S | 详情 | 详情 | |
| (XI) | 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 | |
| (XII) | 43983 | allyl (4R,5S,6S)-3-[[(3S,5R)-1-[(allyloxy)carbonyl]-5-(4-[[[(allyloxy)carbonyl](methyl)amino]methyl]phenyl)pyrrolidinyl]sulfanyl]-6-[(1R)-1-hydroxyethyl]-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate | C33H41N3O8S | 详情 | 详情 |