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【结 构 式】

【分子编号】17495

【品名】tert-butyl (2S,4R)-4-[[tert-butyl(dimethyl)silyl]oxy]-2-((1R)-1-hydroxy-3-[[(4-methylphenyl)sulfonyl]oxy]propyl)-1-pyrrolidinecarboxylate

【CA登记号】

【 分 子 式 】C25H43NO7SSi

【 分 子 量 】529.77046

【元素组成】C 56.68% H 8.18% N 2.64% O 21.14% S 6.05% Si 5.3%

与该中间体有关的原料药合成路线共 1 条

合成路线1

该中间体在本合成路线中的序号:(VI)

A new synthesis of BO-2727 has been described: The condensation of (2S,4R)-1-(tert-butoxycarbonyl)-4-(tert-butyldimethylsilyloxy)pyrrolidine-2-carbaldehyde (I) with ethyl acetate (II) by means of butyllithium and hexa-methyldisylazane (HMSA) in THF gives 3-[1-(tert-butoxycarbonyl)-4(R)-(tert-butyldimethylsilyloxy) pyrrolidin-2(S)-yl]-3-hydroxypropionic acid ethyl ester (III), which was submitted to column chromatography over silicagel yielding the pure 3(R)-hydroxypropionic acid (IV). The reduction of (IV) with NaBH4 in THF afforded the expected diol (V), which was treated with tosyl chloride and triethylamine to give the monotosylate (VI). The reaction of (VI) first with methylamine in methanol, and then with p-nitrobenzyloxycarbonyl chloride (PNZ-Cl) in the same solvent yielded (2S,4R)-2-[1(R)-hydroxy-3-[N-methyl-N-(p-nitrobenzyloxycarbonyl)amino]propyl] pyrrolidin-4-ol (VII). The reaction of (VII) first with SOCl2 and then with potassium thioacetate afforded the 4(R)-acetylsulfanyl derivative (VIII), which was hydrolyzed with NaOH in methanol/water to the corresponding thiol (IX). The condensation of (IX) with the carbapenem intermediate (X) by means of diisopropylethylamine (DIEA) in acetonitrile gave the precursor (protected) of BO-2727 (XI), which was finally deprotected by hydrogenation with H2 over Pd/C in THF/ethanol/pH-7 buffer.

1 Ohtake, N.; Okamoto, O.; Mitomo, R.; Kato, Y.; Yamamoto, K.; Haga, Y.; Fukatsu, H.; Nakagawa, S.; 1ß-Methyl-2-(5-substituted pyrrolidin-3-ylthio)carbapenems; 3. Synthesis and antibacterial activity of BO-2727 and its related compounds. J Antibiot 1997, 50, 7, 598.
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) 17490 tert-butyl (2S,4R)-4-[[tert-butyl(dimethyl)silyl]oxy]-2-formyl-1-pyrrolidinecarboxylate C16H31NO4Si 详情 详情
(II) 17491 ethyl acetate 141-78-6 C4H8O2 详情 详情
(III) 17492 tert-butyl (2S,4R)-4-[[tert-butyl(dimethyl)silyl]oxy]-2-(3-ethoxy-1-hydroxy-3-oxopropyl)-1-pyrrolidinecarboxylate C20H39NO6Si 详情 详情
(IV) 17493 tert-butyl (2S,4R)-4-[[tert-butyl(dimethyl)silyl]oxy]-2-[(1R)-3-ethoxy-1-hydroxy-3-oxopropyl]-1-pyrrolidinecarboxylate C20H39NO6Si 详情 详情
(V) 17494 tert-butyl (2S,4R)-4-[[tert-butyl(dimethyl)silyl]oxy]-2-[(1R)-1,3-dihydroxypropyl]-1-pyrrolidinecarboxylate C18H37NO5Si 详情 详情
(VI) 17495 tert-butyl (2S,4R)-4-[[tert-butyl(dimethyl)silyl]oxy]-2-((1R)-1-hydroxy-3-[[(4-methylphenyl)sulfonyl]oxy]propyl)-1-pyrrolidinecarboxylate C25H43NO7SSi 详情 详情
(VII) 16203 4-nitrobenzyl (2S,4R)-4-hydroxy-2-[(1R)-1-hydroxy-3-(methyl[[(4-nitrobenzyl)oxy]carbonyl]amino)propyl]-1-pyrrolidinecarboxylate C24H28N4O10 详情 详情
(VIII) 16204 4-nitrobenzyl (2S,4S)-4-(acetylsulfanyl)-2-[(1R)-1-hydroxy-3-(methyl[[(4-nitrobenzyl)oxy]carbonyl]amino)propyl]-1-pyrrolidinecarboxylate C26H30N4O10S 详情 详情
(IX) 16205 4-nitrobenzyl (2S,4S)-2-[(1R)-1-hydroxy-3-(methyl[[(4-nitrobenzyl)oxy]carbonyl]amino)propyl]-4-sulfanyl-1-pyrrolidinecarboxylate C24H28N4O9S 详情 详情
(X) 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
(XI) 16207 4-nitrobenzyl (2S,4S)-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)-2-[(1R)-1-hydroxy-3-(methyl[[(4-nitrobenzyl)oxy]carbonyl]amino)propyl]-1-pyrrolidinecarboxylate C41H44N6O14S 详情 详情
Extended Information