Boron trifluoride → (2S,3R,4R,5S,6R)-2-[3-(4-benzyl-3,4-dihydro-2H-benzo[1,4]oxazin-6-ylmethyl)-4-chloro-phenyl]-6-hydroxymethyl-tetrahydro-pyran-3,4,5-triol

HRID 72569노트

반응식

HRID 72569 반응식
[CH2:1]([N:8]1[C:13]2[CH:14]=[C:15]([CH2:18][C:19]3[CH:20]=[C:21]([C@@:26]4(OC)[C@H:31]([OH:32])[C@@H:30]([OH:33])[C@H:29]([OH:34])[C@@H:28]([CH2:35][OH:36])[O:27]4)[CH:22]=[CH:23][C:24]=3[Cl:25])[CH:16]=[CH:17][C:12]=2[O:11][CH2:10][CH2:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.B(F)(F)F.C([SiH](CC)CC)C>C(#N)C.ClCCl>[CH2:1]([N:8]1[C:13]2[CH:14]=[C:15]([CH2:18][C:19]3[CH:20]=[C:21]([C@H:26]4[C@H:31]([OH:32])[C@@H:30]([OH:33])[C@H:29]([OH:34])[C@@H:28]([CH2:35][OH:36])[O:27]4)[CH:22]=[CH:23][C:24]=3[Cl:25])[CH:16]=[CH:17][C:12]=2[O:11][CH2:10][CH2:9]1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

참가 물질

5

반응물 3

HCID 6356Boron trifluorideHCID 12052TriethylsilaneHCID 67117041(2S,3R,4S,5S,6R)-2-[3-(4-benzyl-3,4-dihydro-2H-benzo[1,4]oxazin-6-yl methyl)-4-chloro-phenyl]-6-hydroxymethyl-2-methoxy-tetrahydro-pyran-3,4,5-triol

생성물 1

HCID 52914072(2S,3R,4R,5S,6R)-2-[3-(4-benzyl-3,4-dihydro-2H-benzo[1,4]oxazin-6-ylmethyl)-4-chloro-phenyl]-6-hydroxymethyl-tetrahydro-pyran-3,4,5-triol수율 74%

시약·촉매·용매 1

HCID 21877088Acetonitrile methylene chloride용매

실험 절차

To a stirred solution of (2S,3R,4S,5S,6R)-2-[3-(4-benzyl-3,4-dihydro-2H-benzo[1,4]oxazin-6-ylmethyl)-4-chloro-phenyl]-6-hydroxymethyl-2-methoxy-tetrahydro-pyran-3,4,5-triol (5.0 g, 9.24 mmol) in acetonitrile-dichloromethane mixture (1:1 mixture, 40 mL) was added boron trifluoride diethyletharate complex (2.34 mL, 18.48 mmol), and triethylsilane (5.95 mL, 36.9 mmol) at −10° C. After stirring for 4 h at the same temperature, the reaction was quenched with aq. saturated sodium bicarbonate solution (15 mL). The volatiles were evaporated under reduced pressure; the resulting mixture was extracted with dichloromethane (2×30 mL). The organic layer was washed with brine (10 mL), dried over sodium sulfate, concentrated and purified by preparative HPLC to furnish (2S,3R,4R,5S,6R)-2-[3-(4-benzyl-3,4-dihydro-2H-benzo[1,4]oxazin-6-ylmethyl)-4-chloro-phenyl]-6-hydroxymethyl-tetrahydro-pyran-3,4,5-triol (3.5 g).

후처리

  1. customthe reaction was quenched with aq. saturated sodium bicarbonate solution (15 mL)
  2. customThe volatiles were evaporated under reduced pressure
  3. extractionthe resulting mixture was extracted with dichloromethane (2×30 mL)
  4. washThe organic layer was washed with brine (10 mL)
  5. dry with materialdried over sodium sulfate
  6. concentrationconcentrated
  7. custompurified by preparative HPLC

출처 및 근거

ORD 기록
ord-47c90850391a4b3bb3a232f3840293a3
출처 데이터셋
uspto-grants-2014_09
특허 번호
US08828951B2

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