Phthalimide → HCID 54366715, 화합물

HRID 356847

반응식

HRID 356847 반응식
[CH3:1][C@@H:2]([C@@H:9]1[C@@:13]2([CH3:28])[CH2:14][CH2:15][CH2:16]/[C:17](=[CH:18]\[CH:19]=[C:20]3\[CH2:21][C@@H:22](O)[CH2:23][CH2:24][C:25]\3=[CH2:26])/[C@@H:12]2[CH2:11][CH2:10]1)[CH2:3][CH2:4][CH2:5][CH:6]([CH3:8])[CH3:7].[C:29]1(=[O:39])[NH:33][C:32](=[O:34])[C:31]2=[CH:35][CH:36]=[CH:37][CH:38]=[C:30]12.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.CCOC(/N=N/C(OCC)=O)=O>C1COCC1>[C:29]1(=[O:39])[N:33]([CH:22]2[CH2:23][CH2:24][C@@:25]3([CH3:26])[CH:20]([CH2:19][CH2:18][C@@H:17]4[C@@H:16]3[CH2:15][CH2:14][C@@:13]3([CH3:28])[C@H:12]4[CH2:11][CH2:10][C@@H:9]3[C@H:2]([CH3:1])[CH2:3][CH2:4][CH2:5][CH:6]([CH3:8])[CH3:7])[CH2:21]2)[C:32](=[O:34])[C:31]2=[CH:35][CH:36]=[CH:37][CH:38]=[C:30]12

참가 물질

6

반응물 4

HCID 6809PhthalimideHCID 11776TriphenylphosphineHCID 5280795Vitamin D3HCID 5462977Diethyl azodicarboxylate

생성물 1

HCID 54366715HCID 54366715, 화합물수율 81.3%

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매

실험 절차

To a solution of dihydrocholesterol (5.0 g, 12.9 mmol, Aldrich), phthalimide (2.0 g, 13.6 mmol, Aldrich), and triphenylphosphine (3.8 g, 13.6 mmol, Aldrich) in THF (20 ml, Aldrich) stirred at 0° C. under a nitrogen atmosphere was added dropwise diethylazodicarboxylate (2.3 ml, 14.5 mmol, Aldrich). Upon the completion of addition the reaction mixture was allowed to warm to ambient temperature and stirred overnight. The reaction mixture was concentrated in vacuo to a residue. This residue was dissolved in 50 ml hexane/ethyl acetate 95/5 and a precipitate formed. The mixture was filtered. The filtrate was concentrated to dryness in vacuo, dissolved in 25 ml of hexane/ethyl acetate 95/5 and chromatographed on 200 g silica gel (eluent 2 L hexane/ethyl acetate 95/5 then 1 L hexane/ethyl acetate 90/10). A 76% yield of the desired 3-phthalimidocholestane (5.43 g) was obtained.

후처리

  1. additionUpon the completion of addition the reaction mixture
  2. concentrationThe reaction mixture was concentrated in vacuo to a residue
  3. dissolutionThis residue was dissolved in 50 ml hexane/ethyl acetate 95/5
  4. customa precipitate formed
  5. filtrationThe mixture was filtered
  6. concentrationThe filtrate was concentrated to dryness in vacuo
  7. dissolutiondissolved in 25 ml of hexane/ethyl acetate 95/5
  8. customchromatographed on 200 g silica gel (eluent 2 L hexane/ethyl acetate 95/5

출처 및 근거

ORD 기록
ord-347aa916c9084360a34b0e2d776ca668
출처 데이터셋
uspto-grants-1998_11
특허 번호
US05840710

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