Trifluoroacetic acid → dibenzyl ((2S,3S,5S)-3-hydroxy-1,6-diphenylhexane-2,5-diyl)dicarbamate

HRID 976070노트

반응식

HRID 976070 반응식
[CH2:1]([O:8][C:9]([NH:11][CH:12]([CH:20]1[O:41][CH:21]1[CH:22]([NH:30][C:31]([O:33][CH2:34][C:35]1[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=1)=[O:32])[CH2:23][C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1)[CH2:13][C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1)=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[BH4-].[Na+].FC(F)(F)C(O)=O>C1COCC1>[CH2:1]([O:8][C:9]([NH:11][C@H:12]([C@@H:20]([OH:41])[CH2:21][C@@H:22]([NH:30][C:31]([O:33][CH2:34][C:35]1[CH:36]=[CH:37][CH:38]=[CH:39][CH:40]=1)=[O:32])[CH2:23][C:24]1[CH:25]=[CH:26][CH:27]=[CH:28][CH:29]=1)[CH2:13][C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1)=[O:10])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

참가 물질

5

반응물 3

HCID 6422Trifluoroacetic acidHCID 4311764Sodium borohydrideHCID 18759082HCID 18759082, 화합물

생성물 1

HCID 460972dibenzyl ((2S,3S,5S)-3-hydroxy-1,6-diphenylhexane-2,5-diyl)dicarbamate수율 58%

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매

실험 절차

A mixture of 39.2 g (71.2 mmol) of 2S,3R,4R,5S)-2,5-bis-(N-(((benzyl)oxy)carbonyl)amino)-3,4-epoxy-1,6-diphenylhexane in 600 ml of THF was treated under N2 atmosphere with 13 g (0.36 mol) of sodium borohydride. The resulting mixture was treated dropwise with 27.7 ml (0.36 mol) of trifluoroacetic acid. After being stirred for 3.5 h at ambient temperature, the resulting mixture was quenched with 1N aqueous HCl, diluted with water, and stirred for 16 h. The resulting mixture was filtered. washed with water, and dried to provide 22.85 g (58%) of the desired compound as a white solid.

후처리

  1. customthe resulting mixture was quenched with 1N aqueous HCl
  2. additiondiluted with water
  3. stirringstirred for 16 h
  4. filtrationThe resulting mixture was filtered
  5. washwashed with water
  6. customdried

출처 및 근거

ORD 기록
ord-96df9a2de8bd451e97c7c0da1268e978
출처 데이터셋
uspto-grants-1997_03
특허 번호
US05610193

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