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【结 构 式】

【分子编号】38754

【品名】4-nitrobenzyl (4S,5R,6S)-3-[7-(iodomethyl)-9-oxo-9H-fluoren-3-yl]-4-methyl-7-oxo-6-[(1R)-1-[(triethylsilyl)oxy]ethyl]-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate

【CA登记号】

【 分 子 式 】C37H39IN2O7Si

【 分 子 量 】778.71591

【元素组成】C 57.07% H 5.05% I 16.3% N 3.6% O 14.38% Si 3.61%

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:(VII)

The cyclization of the diazo azetidinone (I) by means of a Rhodium catalyst in dichloromethane gives the -methyl-2-oxocarbapenam derivative (II), which is treated with methanesulfonic anhydride and TEA in dichloromethane yielding the enol triflate (II). The silylation of the OH group of (III) with triethylsilyl triflate and TEA affords the silyl ether (IV), which is condensed with the fluorenone boronic acid (V) by means of KOH and a Pd catalyst giving the adduct (VI) (1). The mesylation of (VI) with MsCl and TEA in dichloromethane, followed by reaction with NaI in acetone yields the iodomethyl compound (VII), which is condensed with 2-(4-aza-1-azoniabicyclo[2.2.2]octan-1-yl)acetamide triflate (VIII) by means of silver triflate in THF/acetonitrile to afford the protected intermediate (IX). Finally, this compound is deprotected first with HCl in THF/water and then by hydrogenation with H2 over Rh/C. The intermediate 2-(4-aza-1-azoniabicyclo[2.2.2]octan-1-yl)acetamide triflate (VIII) has been obtained as follows: The condensation of 1,4-diazabicyclo[2.2.2]octane (X) with 2-bromoacetamide (XI) in acetonitrile gives 2-(4-aza-1-azoniabicyclo[2.2.2]octan-1-yl)acetamide bromide (XII), which is then treated with silver triflate in acetonitrile/methanol to yield (VIII).

1 DiNinno, F.; Laub, J.B.; Greenlee, M.L.; Rouen, G.P.; Hammond, G.G.; Sundelof, J.G.; Hammond, M.L.; Huber, J.L.; Dicationic 2-fluorenylcarbapenems: Potent anti-MRS agents with improved solubility and pharmacokinetic properties. Bioorg Med Chem Lett 1999, 9, 22, 3225.
2 Greenlee, M.L.; Dininno, F.P.; Hammond, M.L. (Merck & Co., Inc.); 1-beta-Methyl-carbapenem, compsns. containing same and methods of use. US 5451579; WO 9521841 .
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) 38749 4-nitrobenzyl (4R)-2-diazo-4-[(2R,3S)-3-[(1R)-1-hydroxyethyl]-4-oxoazetidinyl]-3-oxopentanoate C17H18N4O7 详情 详情
(II) 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
(III) 38750 4-nitrobenzyl (4R,5R,6S)-6-[(1R)-1-hydroxyethyl]-4-methyl-7-oxo-3-[[(trifluoromethyl)sulfonyl]oxy]-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate C18H17F3N2O9S 详情 详情
(IV) 38751 4-nitrobenzyl (4R,5R,6S)-4-methyl-7-oxo-6-[(1R)-1-[(triethylsilyl)oxy]ethyl]-3-[[(trifluoromethyl)sulfonyl]oxy]-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate C24H31F3N2O9SSi 详情 详情
(V) 38752 7-(hydroxymethyl)-9-oxo-9H-fluoren-3-ylboronic acid C14H11BO4 详情 详情
(VI) 38753 4-nitrobenzyl (4S,5R,6S)-3-[7-(hydroxymethyl)-9-oxo-9H-fluoren-3-yl]-4-methyl-7-oxo-6-[(1R)-1-[(triethylsilyl)oxy]ethyl]-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate C37H40N2O8Si 详情 详情
(VII) 38754 4-nitrobenzyl (4S,5R,6S)-3-[7-(iodomethyl)-9-oxo-9H-fluoren-3-yl]-4-methyl-7-oxo-6-[(1R)-1-[(triethylsilyl)oxy]ethyl]-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate C37H39IN2O7Si 详情 详情
(VIII) 30156 1-(2-amino-2-oxoethyl)-4-aza-1-azoniabicyclo[2.2.2]octane trifluoromethanesulfonate C9H16F3N3O4S 详情 详情
(IX) 38755 1-(2-amino-2-oxoethyl)-4-[[6-((4S,5R,6S)-4-methyl-2-[[(4-nitrobenzyl)oxy]carbonyl]-7-oxo-6-[(1R)-1-[(triethylsilyl)oxy]ethyl]-1-azabicyclo[3.2.0]hept-2-en-3-yl)-9-oxo-9H-fluoren-2-yl]methyl]-1,4-diazoniabicyclo[2.2.2]octane di(trifluoromethanesulfonate C47H55F6N5O14S2Si 详情 详情
(X) 28358 1,4-diazabicyclo[2.2.2]octane 280-57-9 C6H12N2 详情 详情
(XI) 38747 2-bromoacetamide 683-57-8 C2H4BrNO 详情 详情
(XII) 38748 1-(2-amino-2-oxoethyl)-4-aza-1-azoniabicyclo[2.2.2]octane bromide C8H16BrN3O 详情 详情
Extended Information