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4-Methylmorpholine → Z-Sta-Ala-OC(CH3)3

HRID 1982320
ノート
印刷プレビュー

反応式

HRID 1982320 の反応式
[NH:1]([C:13]([O:15][CH2:16][C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1)=[O:14])[C@H:2]([C@H:7]([CH2:9][C:10]([OH:12])=O)[OH:8])[CH2:3][CH:4]([CH3:6])[CH3:5].[NH2:23][C@H:24]([C:26]([O:28][C:29]([CH3:32])([CH3:31])[CH3:30])=[O:27])[CH3:25].C1C=CC2N(O)N=NC=2C=1.CN1CCOCC1.C1CCC(N=C=NC2CCCCC2)CC1>CN(C=O)C.O>[NH:1]([C:13]([O:15][CH2:16][C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1)=[O:14])[C@H:2]([C@H:7]([CH2:9][C:10]([NH:23][C@H:24]([C:26]([O:28][C:29]([CH3:32])([CH3:31])[CH3:30])=[O:27])[CH3:25])=[O:12])[OH:8])[CH2:3][CH:4]([CH3:5])[CH3:6]
参加物実験手順後処理出典と根拠反応ノート

参加物

8

反応物 5

HCID 79724-MethylmorpholineHCID 10868DicyclohexylcarbodiimideHCID 757711-HydroxybenzotriazoleHCID 89016L-Alanine 1,1-dimethylethyl esterHCID 14560231Z-Sta-OH

生成物 1

HCID 131714736Z-Sta-Ala-OC(CH3)3

試薬・触媒・溶媒 2

HCID 962
Water
溶媒
HCID 6228Dimethylformamide溶媒

実験手順

371 mg of Z-Sta-OH (cf. stage 1.12), 240 mg of H-Ala-OC(CH3)3 and 184 mg of HOBt×H2O are dissolved in 10 ml of DMF. After cooling the solution to 0°, 133 mg of N-methylmorpholine and 321 mg of DCCI are added. The whole is stirred for 1 hour at 0° and for 14 hours at 25°, then the DCH formed is filtered off and the filtrate is concentrated to dryness by evaporation. The residue is taken up in ethyl acetate and the solution is extracted with saturated sodium bicarbonate solution. The organic phases are dried, concentrated by evaporation and the residue is flash-chromatographed over 80 g of silica gel (grain size 0.04-0.063 mm) [eluant: methylene chloride/ether (4:1), fractions of approximately 25 ml]. Fractions 24-40 are combined, concentrated by evaporation, the residue is dissolved in a small amount of methylene chloride, and the solution is filtered and concentrated by evaporation once more. After drying the residue in a high vacuum, Z-Sta-Ala-OC(CH3)3 is obtained as a slightly yellowish oil; Rf (methylene chloride/diethyl ether [4:1])=0.10.

後処理

  1. temperatureAfter cooling the solution to 0°
  2. customthe DCH formed
  3. filtrationis filtered off
  4. concentrationthe filtrate is concentrated to dryness by evaporation
  5. extractionthe solution is extracted with saturated sodium bicarbonate solution
  6. customThe organic phases are dried
  7. concentrationconcentrated by evaporation
  8. customthe residue is flash-chromatographed over 80 g of silica gel (grain size 0.04-0.063 mm) [eluant: methylene chloride/ether (4:1), fractions of approximately 25 ml]
  9. concentrationconcentrated by evaporation
  10. dissolutionthe residue is dissolved in a small amount of methylene chloride
  11. filtrationthe solution is filtered
  12. concentrationconcentrated by evaporation once more
  13. customAfter drying the residue in a high vacuum

出典と根拠

ORDレコード
ord-056932ce375f4aeca6c15f8c5ef44a5b
出典データセット
uspto-grants-1986_06
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US04595677

反応ノート

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