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【结 构 式】 
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【分子编号】41643 【品名】(4R)-1-methyl-4-sulfanyl-2-pyrrolidinone 【CA登记号】 |
【 分 子 式 】C5H9NOS 【 分 子 量 】131.1986 【元素组成】C 45.77% H 6.91% N 10.68% O 12.19% S 24.44% |
合成路线1
该中间体在本合成路线中的序号：(V)Protection of alcohol (I) with TBDMSCl and imidazole gives silyl compound (II) which is N-methylated by means of NaH and MeI and then deprotected with HCl to yield derivative (III). Mesylation of (III) with MsCl in presence of Et3N followed by thioacetylation with AcSK (A) affords thioacetate (IV) which is then hydrolyzed with NaOMe to yield (V). Treatment of (VI) with diphenylphosphoryl chloride (B) and DIEA in acetonitrile yields (VII), which is then condensed with mercaptan (V) by means of DIEA in the same solvent to provide carbapenem (VIII). Deprotection of the carboxyl moiety of (VIII) by hydrogenation with H2 over Pd/C affords carboxylate (IX), which is finally esterified with pivaloyloxymethyl iodide (X) in N,N-dimethylacetamide or DMF.
| 【1】 Miyauchi, M.; Ohya, S.; Kawamoto, I.; Shibayama, T.; Kanno, O.; Synthesis and biological evaluation of new oral carbapenems with 1-methyl-5-oxopyrrolidin-3-ylthio moiety. J Antibiot 1999, 52, 10, 900. |
| 【2】 Kawamoto, I.; Tanaka, T.; Endo, R.; Miyauchi, M.; Iwata, M. (Sankyo Co., Ltd.); 2-(Heterocyclylthio)carbapenem derivs. their preparation and their use as antibiotics. AU 8932386; EP 0337637; EP 0597821; JP 1990028180; JP 1990049783; US 5104867; US 5242914 . |
| 中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
|---|---|---|---|---|---|---|
| (B) | 16074 | Diphenyl phosphoryl chloride; 1,1'-Diphenylphosphoryl chloride; Chlorodiphenyl Phosphate; Diphenyl chlorophosphate; Diphenylchlorophosphate | 2524-64-3 | C12H10ClO3P | 详情 | 详情 |
| (A) | 17190 | potassium ethanethioate | 10387-40-3 | C2H3KOS | 详情 | 详情 |
| (I) | 17188 | (S)-4-hydroxy-2-pyrrolidone; (4S)-4-hydroxytetrahydro-2H-pyrrol-2-one; (S)-4-hydroxypyrrolidone | 68108-18-9 | C4H7NO2 | 详情 | 详情 |
| (II) | 41640 | (4S)-4-[[tert-butyl(dimethyl)silyl]oxy]-2-pyrrolidinone | C10H21NO2Si | 详情 | 详情 | |
| (III) | 41641 | (4S)-4-hydroxy-1-methyl-2-pyrrolidinone | C5H9NO2 | 详情 | 详情 | |
| (IV) | 41642 | S-[(3R)-1-methyl-5-oxopyrrolidinyl] ethanethioate | C7H11NO2S | 详情 | 详情 | |
| (V) | 41643 | (4R)-1-methyl-4-sulfanyl-2-pyrrolidinone | C5H9NOS | 详情 | 详情 | |
| (VI) | 37720 | 4-nitrobenzyl (4R,5R,6S)-6-[(1R)-1-hydroxyethyl]-4-methyl-3,7-dioxo-1-azabicyclo[3.2.0]heptane-2-carboxylate | C17H18N2O7 | 详情 | 详情 | |
| (VII) | 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 |
| (VIII) | 41644 | 4-nitrobenzyl (4R,5S,6S)-6-[(1R)-1-hydroxyethyl]-4-methyl-3-[[(3R)-1-methyl-5-oxopyrrolidinyl]sulfanyl]-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate | C22H25N3O7S | 详情 | 详情 | |
| (IX) | 41645 | sodium (4R,5S,6S)-6-[(1R)-1-hydroxyethyl]-4-methyl-3-[[(3R)-1-methyl-5-oxopyrrolidinyl]sulfanyl]-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate | C15H19N2NaO5S | 详情 | 详情 | |
| (X) | 11159 | iodomethyl pivalate | C6H11IO2 | 详情 | 详情 |