4-Formyl-17beta-estradiol → 4-Formylestrone

HRID 343305

반응식

HRID 343305 반응식
[OH:1][C:2]1[CH:19]=[CH:18][C:17]2[C@@H:16]3[C@H:7]([C@H:8]4[C@@:12]([CH2:14][CH2:15]3)([CH3:13])[C@@H:11]([OH:20])[CH2:10][CH2:9]4)[CH2:6][CH2:5][C:4]=2[C:3]=1[CH:21]=[O:22].CC(C)=O.OS(O)(=O)=O.O=[Cr](=O)=O>CC(C)=O>[OH:1][C:2]1[CH:19]=[CH:18][C:17]2[C@@H:16]3[C@H:7]([C@H:8]4[C@@:12]([CH2:14][CH2:15]3)([CH3:13])[C:11](=[O:20])[CH2:10][CH2:9]4)[CH2:6][CH2:5][C:4]=2[C:3]=1[CH:21]=[O:22]

참가 물질

4

반응물 2

HCID 117223424-Formyl-17beta-estradiolHCID 131709961Jones' reagent

생성물 1

HCID 143343274-Formylestrone수율 93%

시약·촉매·용매 1

HCID 180Acetone용매

실험 절차

To a solution of 3,17β-dihydroxyestra-1,3,5(10)-triene-4-carboxaldehyde (2b, 0.300 g, 1.0 mmol) in acetone (10 mL) was added Jones reagent (0.50 mL) at 0° C. The reaction mixture was stirred for 10 min, quenched with 2-propanol, and extracted with EtOAc. The combined organic layers were washed with H2O, then with saturated aqueous NaCl, and dried (Na2SO4). The desiccant was filtered and the solvent was evaporated at reduced pressure. The residue was purified by column chromatography (silica gel) using n-hexane:THF (4:1→2:1, v/v) to afford 0.276 g of 12 (93% yield), m.p. 234°-237° C.

후처리

  1. customquenched with 2-propanol
  2. extractionextracted with EtOAc
  3. washThe combined organic layers were washed with H2O
  4. dry with materialwith saturated aqueous NaCl, and dried (Na2SO4)
  5. filtrationThe desiccant was filtered
  6. customthe solvent was evaporated at reduced pressure
  7. customThe residue was purified by column chromatography (silica gel)

출처 및 근거

ORD 기록
ord-ce95a65df00c40ad932a9a570aa9ef88
출처 데이터셋
uspto-grants-1999_01
특허 번호
US05861388

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