Diisopropylethylamine → p-nitrobenzyl (1R,5S,6S)-2-{1-[4-((1S)-1-carbamoyl-2-methyl-propylcarbamoyl)-1,3-thiazol-2-yl]azetidin-3-yl}thio-6-[(R)-1-t-butyldimethylsilyloxyethyl]-1-methylcarbapen-2-em-3-carboxylate

HRID 891701ノート

反応式

HRID 891701 の反応式
[C:1]([C:4]1[N:5]=[C:6]([N:9]2[CH2:12][CH:11]([S:13][C:14]3[C@H:15]([CH3:45])[C@@H:16]4[C@@H:33]([C@H:34]([O:36][Si:37]([C:40]([CH3:43])([CH3:42])[CH3:41])([CH3:39])[CH3:38])[CH3:35])[C:32](=[O:44])[N:17]4[C:18]=3[C:19]([O:21][CH2:22][C:23]3[CH:28]=[CH:27][C:26]([N+:29]([O-:31])=[O:30])=[CH:25][CH:24]=3)=[O:20])[CH2:10]2)[S:7][CH:8]=1)(O)=[O:2].Cl.[NH2:47][C@H:48]([C:52]([NH2:54])=[O:53])[CH:49]([CH3:51])[CH3:50].C(P(C#N)(CC)=O)C.C(N(C(C)C)CC)(C)C>CN(C)C=O>[C:52]([C@@H:48]([NH:47][C:1]([C:4]1[N:5]=[C:6]([N:9]2[CH2:10][CH:11]([S:13][C:14]3[C@H:15]([CH3:45])[C@@H:16]4[C@@H:33]([C@H:34]([O:36][Si:37]([C:40]([CH3:41])([CH3:42])[CH3:43])([CH3:39])[CH3:38])[CH3:35])[C:32](=[O:44])[N:17]4[C:18]=3[C:19]([O:21][CH2:22][C:23]3[CH:24]=[CH:25][C:26]([N+:29]([O-:31])=[O:30])=[CH:27][CH:28]=3)=[O:20])[CH2:12]2)[S:7][CH:8]=1)=[O:2])[CH:49]([CH3:51])[CH3:50])(=[O:53])[NH2:54]

参加物

6

反応物 4

HCID 81531DiisopropylethylamineHCID 13586794DiethylphosphorylcyanideHCID 13689583L-Valinamide--hydrogen chloride (1/1)HCID 131725364p-nitrobenzyl (1R,5S,6S)-2-[1-(4-carboxy-1,3-thiazol-2-yl)azetidin-3-yl]thio-6-[(R)-1-t-butyldimethylsilyloxyethyl]-1-methyl-carbapen-2-em-3-carboxylate

生成物 1

HCID 131725332p-nitrobenzyl (1R,5S,6S)-2-{1-[4-((1S)-1-carbamoyl-2-methyl-propylcarbamoyl)-1,3-thiazol-2-yl]azetidin-3-yl}thio-6-[(R)-1-t-butyldimethylsilyloxyethyl]-1-methylcarbapen-2-em-3-carboxylate収率 82%

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

実験手順

To a solution of p-nitrobenzyl (1R,5S,6S)-2-[1-(4-carboxy-1,3-thiazol-2-yl)azetidin-3-yl]thio-6-[(R)-1-t-butyldimethylsilyloxyethyl]-1-methylcarbapen-2-em-3-carboxylate (1.00 g, 1.48 mmol) (obtained as described in Reference Example 41(7)) and L-valinamide hydrochloride (272 mg, 1.78 mmol) obtained as described in Reference Example 47(2) in dimethylformamide (50 ml) were added diethylphosphoryl cyanide (275 μl, 1.78 mmol) and diisopropylethylamine (620 μl, 3.56 mmol) in an ice bath under an atmosphere of nitrogen. The mixture was stirred at room temperature for 2.5 hours. After checking the completion of the reaction, the reaction mixture was partitioned between ethyl acetate and 10% aqueous sodium chloride solution. The obtained organic layer was washed successively with saturated aqueous sodium hydrogencarbonate solution and saturated aqueous sodium chloride solution, dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure. The residue was purified by chromatography on a silica gel column using n-hexane:ethyl acetate (1:3)→methylene chloride:ethyl acetate (3:1) as the eluant to afford p-nitrobenzyl (1R,5S,6S)-2-{1-[4-((1S)-1-carbamoyl-2-methylpropylcarbamoyl)-1,3-thiazol-2-yl]azetidin-3-yl}thio-6-[(R)-1-t-butyldimethylsilyloxyethyl]-1-methylcarbapen-2-em-3-carboxylate (934 mg, yield 82%).

後処理

  1. customthe completion of the reaction
  2. customthe reaction mixture was partitioned between ethyl acetate and 10% aqueous sodium chloride solution
  3. washThe obtained organic layer was washed successively with saturated aqueous sodium hydrogencarbonate solution and saturated aqueous sodium chloride solution
  4. dry with materialdried over anhydrous sodium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated under reduced pressure
  7. customThe residue was purified by chromatography on a silica gel column

出典と根拠

ORDレコード
ord-c370ed97b89b4efda838ae07536a52ce
出典データセット
uspto-grants-2006_02
特許番号
US07001897B2

反応ノート

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