HomeMCPWorkbenchSkills
HomeWorkbenchNotificationsMe
llms.txt · MCP GuidePrivacy Policy · Terms of Service · Supportv1.8.0
  1. Home
  2. /Reaction

Cesium carbonate → HCID 66704686, compound

HRID 1175219
Notes
Print preview

Reaction equation

HRID 1175219 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]2[C@H:13]([OH:14])[C@@H:12]([OH:15])[C@H:11]([OH:16])[C@@H:10]([CH2:17][OH:18])[O:9]2)=[CH:4][C:3]=1[CH2:19][C:20]1[CH:25]=[CH:24][C:23]([OH:26])=[CH:22][CH:21]=1.CS(O[CH2:32][CH2:33][O:34][CH2:35][CH2:36][NH:37][C:38]([O:40][C:41]([CH3:44])([CH3:43])[CH3:42])=[O:39])(=O)=O.C([O-])([O-])=O.[Cs+].[Cs+]>CN(C=O)C>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C@H:8]2[C@H:13]([OH:14])[C@@H:12]([OH:15])[C@H:11]([OH:16])[C@@H:10]([CH2:17][OH:18])[O:9]2)=[CH:4][C:3]=1[CH2:19][C:20]1[CH:21]=[CH:22][C:23]([O:26][CH2:32][CH2:33][O:34][CH2:35][CH2:36][NH:37][C:38](=[O:39])[O:40][C:41]([CH3:44])([CH3:43])[CH3:42])=[CH:24][CH:25]=1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 3

HCID 10796Cesium carbonateHCID 12106196tert-butyl N-{2-[2-(methanesulfonyloxy)ethoxy]ethyl}carbamateHCID 57809578HCID 57809578, compound2×

Product 1

HCID 66704686HCID 66704686, compoundYield 0.1%

Reagents, catalysts & solvents 1

HCID 6228Dimethylformamide
Solvent

Procedure

(3R,4R,5S,6R)-2-(4-chloro-3-(4-hydroxybenzyl)phenyl)-6-(hydroxymethyl) tetrahydro-2H-pyran-3,4,5-triol (intermediate D) (30 mg, 78.7 mmol), 2-(2-(tert-butoxycarbonylamino)ethoxy)ethyl methanesulfonate (26.8 mg, 94.5 mmol) and Cs2CO3 (30.8 mg, 94.5 mmol) were dissolved in DMF (3 ml) at room temperature and stirred overnight. The mixture was then extracted with EtOAc, washed with NH4Cl and NaCl, dried over Na2SO4, and evaporated to get the crude product, tert-butyl 2-(2-(4-(2-chloro-5-((2S,3R,4R,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)benzyl)phenoxy)ethoxy)ethylcarbamate (intermediate U) (40 mg), which was used for the next step without further purification. The crude intermediate U was dissolved in MeOH (0.5 mL), MeSO3H (6 μL) was added, and the mixture was stirred overnight at room temperature. Then the reaction was quenched with NaHCO3, the mixture was extracted with ethyl acetate, and the organic layer was washed with brine, dried over Na2SO4, concentrated, and separated by preparative HPLC to obtain compound V (11.6 mg). 1H NMR (CD3OD): δ 7.40˜7.27 (m, 3H), 7.14˜7.10 (m, 2H), 6.87˜6.85 (m, 2H), 4.54 (d, J=16, 1H), 4.19˜4.18 (m, 1H), 4.16˜4.14 (m, 2H), 4.05˜4.01 (m, 4H), 3.94˜3.93 (m, 1H), 3.88˜3.86 (m, 2H), 3.83˜3.76 (m, 3H), 3.67˜3.57 (m, 1H), 3.16˜3.13 (m, 2H); MS ESI (m/z): 468 (M+H)+, calc. 467.

Workup

  1. extractionThe mixture was then extracted with EtOAc
  2. washwashed with NH4Cl and NaCl
  3. dry with materialdried over Na2SO4
  4. customevaporated

Sources & evidence

ORD record
ord-7f56d246a2134f919bd7e2200ec8e42f
Source dataset
uspto-grants-2010_11
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07838499B2

Reaction notes

Loading…

On this pageParticipantsProcedureWorkupSources & evidenceReaction notes