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Sodium triacetoxyborohydride → ((S)-1-{[(R)-1-(3-Benzyl-7-chloro-4-oxo-3,4-dihydro-quinazolin-2-yl)-2-methyl-propylamino]-methyl}-4-benzyloxycarbonylamino-butyl)-carbamic acid tert-butyl ester

HRID 490270
ノート
印刷プレビュー

反応式

HRID 490270 の反応式
[NH2:1][C@@H:2]([C:6]1[N:15]([CH2:16][C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=2)[C:14](=[O:23])[C:13]2[C:8](=[CH:9][C:10]([Cl:24])=[CH:11][CH:12]=2)[N:7]=1)[CH:3]([CH3:5])[CH3:4].[C:25]([O:29][C:30](=[O:49])[NH:31][C@H:32]([CH:47]=O)[CH2:33][CH2:34][CH2:35][NH:36][C:37]([O:39][CH2:40][C:41]1[CH:46]=[CH:45][CH:44]=[CH:43][CH:42]=1)=[O:38])([CH3:28])([CH3:27])[CH3:26].C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>C(Cl)Cl>[C:25]([O:29][C:30](=[O:49])[NH:31][C@H:32]([CH2:47][NH:1][C@@H:2]([C:6]1[N:15]([CH2:16][C:17]2[CH:18]=[CH:19][CH:20]=[CH:21][CH:22]=2)[C:14](=[O:23])[C:13]2[C:8](=[CH:9][C:10]([Cl:24])=[CH:11][CH:12]=2)[N:7]=1)[CH:3]([CH3:5])[CH3:4])[CH2:33][CH2:34][CH2:35][NH:36][C:37]([O:39][CH2:40][C:41]1[CH:42]=[CH:43][CH:44]=[CH:45][CH:46]=1)=[O:38])([CH3:28])([CH3:26])[CH3:27]
参加物実験手順後処理出典と根拠反応ノート

参加物

5

反応物 3

HCID 5049666Sodium triacetoxyborohydrideHCID 21015281(R)-2-(1-amino-2-methylpropyl)-3-benzyl-7-chloroquinazolin-4(3H)-oneHCID 86591893((S)-4-benzyloxycarbonylamino-1-formyl-butyl)-carbamic acid tert-butyl ester

生成物 1

HCID 69078749((S)-1-{[(R)-1-(3-Benzyl-7-chloro-4-oxo-3,4-dihydro-quinazolin-2-yl)-2-methyl-propylamino]-methyl}-4-benzyloxycarbonylamino-butyl)-carbamic acid tert-butyl ester収率 76%

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒

実験手順

To a solution of 2-((R)-1-amino-2-methyl-propyl)-3-benzyl-7-chloro-3H-quinazolin-4-one (a compound of Formula 107, 366 mg, 1.07 mmol) and ((S)-4-benzyloxycarbonylamino-1-formyl-butyl)-carbamic acid tert-butyl ester (prepared as previously described: Hamada, Y.; Shioro, T. Chem. Pharm. Bull. 1982, 30, 1921) (452 mg, 1.29 mmol) in CH2Cl2 (25 mL) was added sodium triacetoxyborohydride (341 mg, 1.61 mmol). The resultant cloudy mixture was stirred overnight and quenched with saturated brine (50 mL). The aqueous layer was extracted with CH2Cl2 (20 mL) and the combined extracts were dried over MgSO4, filtered and concentrated under reduced pressure. The residue was purified by silica gel chromatography (2:1 hexanes:ethyl acetate) to provide 550 mg (76%) of the title compound as a yellow oil. MS(ES+) m/e 676.4 [M+H]+.

後処理

  1. customquenched with saturated brine (50 mL)
  2. extractionThe aqueous layer was extracted with CH2Cl2 (20 mL)
  3. dry with materialthe combined extracts were dried over MgSO4
  4. filtrationfiltered
  5. concentrationconcentrated under reduced pressure
  6. customThe residue was purified by silica gel chromatography (2:1 hexanes:ethyl acetate)

出典と根拠

ORDレコード
ord-7c06b2dbd76c48debb67d7cca7e42a9f
出典データセット
uspto-grants-2009_05
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US07528137B2

反応ノート

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