반응식
[CH2:1]([C@@H:7]([C@@H:18]([O:33][Si:34]([C:37]([CH3:40])([CH3:39])[CH3:38])([CH3:36])[CH3:35])[CH2:19][C@H:20]([OH:32])[CH2:21][CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][CH2:28][CH2:29][CH2:30][CH3:31])[C:8]([O:10][CH2:11][C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1)=[O:9])[CH2:2][CH2:3][CH2:4][CH2:5][CH3:6].[O:41]1[CH:46]=[CH:45][CH2:44][CH2:43][CH2:42]1.O.C1(C)C=CC(S(O)(=O)=O)=CC=1>C(Cl)Cl>[CH2:1]([C@@H:7]([C@@H:18]([O:33][Si:34]([C:37]([CH3:38])([CH3:39])[CH3:40])([CH3:36])[CH3:35])[CH2:19][C@H:20]([O:32][CH:42]1[CH2:43][CH2:44][CH2:45][CH2:46][O:41]1)[CH2:21][CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][CH2:28][CH2:29][CH2:30][CH3:31])[C:8]([O:10][CH2:11][C:12]1[CH:13]=[CH:14][CH:15]=[CH:16][CH:17]=1)=[O:9])[CH2:2][CH2:3][CH2:4][CH2:5][CH3:6]참가 물질
5
반응물 3
생성물 1
시약·촉매·용매 1
반응 조건
- 온도
- -15 °C
실험 절차
M)f) 350 mg of benzyl (2S,3S,5R)-2-hexyl-3-[(t-butyldimethylsilyl)oxy]-5-hydroxyhexadecanoate and 0.5 ml of freshly distilled 3,4-dihydro-2H-pyran were dissolved in 10 ml of methylene chloride and cooled to -15° C. A crystal of p-toluenesulfonic acid monohydrate was added thereto. The mixture was stirred until the reaction has finished. Thereupon, the solution was evaporated and the residue was chromatographed on silica gel. There were obtained 330 mg of benzyl (2S,3S,5R)-2-hexyl-3-[(t-butyldimethylsilyl)oxy]5-[(tetrahydro-2 H-pyran-2-yl)oxy]hexadecanoate, MS: 603 (M+ -t-butyl).
후처리
- customThereupon, the solution was evaporated
- customthe residue was chromatographed on silica gel
출처 및 근거
- ORD 기록
- ord-b4cc2c6c7bd54aefae625584e9d8470f
- 출처 데이터셋
- uspto-grants-1992_12
- 특허 번호
- US05175186
연결된 노트
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