Sodium borohydride → (3S,4S)-4-(1-benzyloxycarbonylethyl)-3-(1-(R)-benzyloxycarbonyloxyethyl)-1-di(p-anisyl)methyl-2-azetidinone

HRID 1196220노트

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HRID 1196220 반응식
[CH2:1]([O:8][C:9]([C:11]([C@H:13]1[N:16]([CH:17]([CH2:27][C:28]2[CH:33]=[CH:32][C:31]([O:34][CH3:35])=[CH:30][CH:29]=2)[CH2:18][C:19]2[CH:24]=[CH:23][C:22]([O:25][CH3:26])=[CH:21][CH:20]=2)[C:15](=[O:36])[C@@H:14]1[C@H:37]([O:39][C:40]([O:42][CH2:43][C:44]1[CH:49]=[CH:48][CH:47]=[CH:46][CH:45]=1)=[O:41])[CH3:38])=[CH2:12])=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[BH4-].[Na+]>CO.C(OCC)(=O)C.[Ni](Cl)Cl>[CH2:1]([O:8][C:9]([CH:11]([C@H:13]1[N:16]([CH:17]([CH2:27][C:28]2[CH:29]=[CH:30][C:31]([O:34][CH3:35])=[CH:32][CH:33]=2)[CH2:18][C:19]2[CH:24]=[CH:23][C:22]([O:25][CH3:26])=[CH:21][CH:20]=2)[C:15](=[O:36])[C@@H:14]1[C@H:37]([O:39][C:40]([O:42][CH2:43][C:44]1[CH:49]=[CH:48][CH:47]=[CH:46][CH:45]=1)=[O:41])[CH3:38])[CH3:12])=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

참가 물질

6

반응물 2

HCID 4311764Sodium borohydrideHCID 67919445(3S,4S)-4-(1-benzyloxycarbonylethenyl)-3-(1-(R)-benzyloxycarbonyloxyethyl)-1-di(p-anisyl)methyl-2-azetidinone

생성물 1

HCID 67919668(3S,4S)-4-(1-benzyloxycarbonylethyl)-3-(1-(R)-benzyloxycarbonyloxyethyl)-1-di(p-anisyl)methyl-2-azetidinone

시약·촉매·용매 3

HCID 24385Nickel Dichloride촉매HCID 887Methanol용매HCID 8857Ethyl Acetate용매

실험 절차

A solution of (3S,4S)-4-(1-benzyloxycarbonylethenyl)-3-(1-(R)-benzyloxycarbonyloxyethyl)-1-di(p-anisyl)methyl-2-azetidinone (63 mg) in methanol (1.5 ml) was treated with sodium borohydride (7.7 mg) in the presence of nickel chloride (1.3 mg) at 0°-5° C. for 15 minutes. After stirring at room temperature for an additional 1 hour, the reaction mixture was diluted with ethyl acetate (30 ml), washed with brine and dried over anhydrous sodium sulfate. Filtration and concentration of the filtrate in vacuo gave an oily residue, which was purified by thin-layer chromatography (SiO2) to yield (3S,4S)-4-(1-benzyloxycarbonylethyl)-3-(1-(R)-benzyloxycarbonyloxyethyl)-1-di(p-anisyl)methyl-2-azetidinone.

후처리

  1. washwashed with brine
  2. dry with materialdried over anhydrous sodium sulfate
  3. filtrationFiltration and concentration of the filtrate in vacuo
  4. customgave an oily residue, which
  5. customwas purified by thin-layer chromatography (SiO2)

출처 및 근거

ORD 기록
ord-1a75f19c0c6f442e989b533f5c947bdf
출처 데이터셋
uspto-grants-1992_05
특허 번호
US05112966

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