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11beta,16alpha,17,21-Tetrahydroxypregn-4-ene-3,20-dione → 16alpha-(2,2-Diethoxyethoxy)-11beta,17,21-trihydroxypregn-4-ene-3,20-dione

HRID 918403
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인쇄 미리보기

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HRID 918403 반응식
[CH2:1]([O:3][CH:4]([O:8][CH2:9][CH3:10])[CH:5]=[N+]=[N-])[CH3:2].C(OC(OCC)CNC(N)=O)C.[OH:23][C@H:24]1[CH2:44][C@@:43]2([CH3:45])[C@@H:35]([CH2:36][C@@H:37]([OH:47])[C@:38]2([OH:46])[C:39](=[O:42])[CH2:40][OH:41])[C@H:34]2[C@H:25]1[C@:26]1([CH3:49])[C:31]([CH2:32][CH2:33]2)=[CH:30][C:29](=[O:48])[CH2:28][CH2:27]1>CCOCC.CCCCC.CO>[CH2:1]([O:3][CH:4]([O:8][CH2:9][CH3:10])[CH2:5][O:47][C@@H:37]1[CH2:36][C@@H:35]2[C@:43]([CH3:45])([CH2:44][C@H:24]([OH:23])[C@H:25]3[C@H:34]2[CH2:33][CH2:32][C:31]2[C@:26]3([CH3:49])[CH2:27][CH2:28][C:29](=[O:48])[CH:30]=2)[C@@:38]1([OH:46])[C:39](=[O:42])[CH2:40][OH:41])[CH3:2]
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참가 물질

6

반응물 3

HCID 10200311beta,16alpha,17,21-Tetrahydroxypregn-4-ene-3,20-dioneHCID 1713901Urea, (2,2-diethoxyethyl)-HCID 21520892Ethane, 2-diazo-1,1-diethoxy-

생성물 1

HCID 6814316216alpha-(2,2-Diethoxyethoxy)-11beta,17,21-trihydroxypregn-4-ene-3,20-dione

시약·촉매·용매 2

HCID 887Methanol용매
HCID 21877078
Diethylether pentane
용매

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온도
0 °C

실험 절차

A solution of 2,2-diethoxy-1-diazoethane (prepared from 0.0935 mole of N-2,2-diethoxyethyl urea by the method of W. Kirmse and B. Buschhoff, Chem. Ber., 100, 1491 (1967)) in 300 ml of 3:2 ether pentane is diluted with 100 ml of methanol and cooled to 0°C. 11β,16α,17,21-Tetrahydroxypregn-4-ene-3,20-dione, 16,17-cycloborate is added in portions until nitrogen evolution ceases. The solvent is removed in vacuo and the residue is recrystallized from methanol to yield the title compound.

후처리

  1. customThe solvent is removed in vacuo
  2. customthe residue is recrystallized from methanol

출처 및 근거

ORD 기록
ord-7503150db3f24ed69c50a2ca3de1ccfc
출처 데이터셋
uspto-grants-1976_07
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US03971773

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