Water → (1S,2RS,5S,6S,7R)-2-(2-tetrahydropyranyloxy)-3-methylene-6-[(E,3S)-3-t-butyldimethylsilyloxy-1-octenyl]-7-t-butyl-7-t-butyldimethylsilyloxybicyclo[3.3.0]octane

HRID 1974775노트

반응식

HRID 1974775 반응식
[OH:1][CH:2]1[C:9](=[CH2:10])[CH2:8][C@H:7]2[C@@H:3]1[CH2:4][C@@H:5]([O:27][Si:28]([C:31]([CH3:34])([CH3:33])[CH3:32])([CH3:30])[CH3:29])[C@H:6]2/[CH:11]=[CH:12]/[C@@H:13]([O:19][Si:20]([C:23]([CH3:26])([CH3:25])[CH3:24])([CH3:22])[CH3:21])[CH2:14][CH2:15][CH2:16][CH2:17][CH3:18].[O:35]1[CH:40]=[CH:39][CH2:38][CH2:37][CH2:36]1.O>C(Cl)Cl.C1C=CC(N=NC2C=CC(N)=NC=2N)=CC=1.Cl.CC1C=CC(S(O)(=O)=O)=CC=1>[O:35]1[CH2:36][CH2:37][CH2:38][CH2:39][CH:40]1[O:1][CH:2]1[C:9](=[CH2:10])[CH2:8][C@H:7]2[C@@H:3]1[CH2:4][C@@:5]([C:3]([CH3:7])([CH3:4])[CH3:2])([O:27][Si:28]([C:31]([CH3:33])([CH3:32])[CH3:34])([CH3:29])[CH3:30])[C@H:6]2/[CH:11]=[CH:12]/[C@@H:13]([O:19][Si:20]([C:23]([CH3:24])([CH3:25])[CH3:26])([CH3:21])[CH3:22])[CH2:14][CH2:15][CH2:16][CH2:17][CH3:18]

참가 물질

6

반응물 3

HCID 962WaterHCID 80803,4-dihydro-2H-pyranHCID 13955240(1S,2RS,5S,6S,7R)-2-hydroxy-3-methylene-6-[(E,3S)-3-t-butyldimethylsilyloxy-1-octenyl]-7-t-butyldimethylsilyloxybicyclo[3.3.0]octane

생성물 1

HCID 22850338(1S,2RS,5S,6S,7R)-2-(2-tetrahydropyranyloxy)-3-methylene-6-[(E,3S)-3-t-butyldimethylsilyloxy-1-octenyl]-7-t-butyl-7-t-butyldimethylsilyloxybicyclo[3.3.0]octane수율 176%

시약·촉매·용매 2

HCID 21909214Pyridium p-toluenesulfonate촉매HCID 6344Dichloromethane용매2회

실험 절차

(1S,2RS,5S,6S,7R)-2-hydroxy-3-methylene-6-[(E,3S)-3-t-butyldimethylsilyloxy-1-octenyl]-7-t-butyldimethylsilyloxybicyclo[3.3.0]octane (127 mg, 0.25 mmole) obained in Example 3 was dissolved in 2 ml of methylene chloride. Dihydropyrane (42 mg, 0.50 mmole) and pyridium p-toluenesulfonate (5 mg) were added to the solution, and the mixture was stirred at room temperature for 8 hours. Water and methylene chloride were added to the reaction mixture to perform extraction. The resulting organic layer was washed with an aqueous solution of sodium chloride, dried over anhydrous magnesium sulfate and concentrated. The resulting crude product was subjected to column chromatography (silica gel 15 g, hexane/ethyl acetate=30/1) to give (1S,2RS,5S,6S,7R)-2-(2-tetrahydropyranyloxy)-3-methylene-6-[(E,3S)-3-t-butyldimethylsilyloxy-1-octenyl]-7-t-butyl-7-t-butyldimethylsilyloxybicyclo[3.3.0]octane (130 mg, 0.22 mmole, 88%).

후처리

  1. extractionextraction
  2. washThe resulting organic layer was washed with an aqueous solution of sodium chloride
  3. dry with materialdried over anhydrous magnesium sulfate
  4. concentrationconcentrated

출처 및 근거

ORD 기록
ord-d3f358db81d94d6ebdf9cee7a1fbc034
출처 데이터셋
uspto-grants-1994_02
특허 번호
US05283349

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