Tetrabutylammonium Fluoride → (3R,4S)-3-({[4-Ethyl-3-(3-methoxy-propoxy)-benzoyl]-isopropyl-amino}-methyl)-4-hydroxymethyl-pyrrolidine-1-carboxylic acid tert-butyl ester

HRID 1158390Notes

Reaction equation

HRID 1158390 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:12][C@@H:11]([CH2:13][N:14]([C:18](=[O:33])[C:19]2[CH:24]=[CH:23][C:22]([CH2:25][CH3:26])=[C:21]([O:27][CH2:28][CH2:29][CH2:30][O:31][CH3:32])[CH:20]=2)[CH:15]([CH3:17])[CH3:16])[C@H:10]([C:34](C)(C)[O:35][SiH2]C(C)(C)C)[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].CCCC[N+](CCCC)(CCCC)CCCC.[F-]>C(Cl)Cl.CO>[C:1]([O:5][C:6]([N:8]1[CH2:9][C@@H:10]([CH2:34][OH:35])[C@H:11]([CH2:13][N:14]([C:18](=[O:33])[C:19]2[CH:24]=[CH:23][C:22]([CH2:25][CH3:26])=[C:21]([O:27][CH2:28][CH2:29][CH2:30][O:31][CH3:32])[CH:20]=2)[CH:15]([CH3:16])[CH3:17])[CH2:12]1)=[O:7])([CH3:2])([CH3:3])[CH3:4]

Participants

4

Reactant 2

HCID 2724141Tetrabutylammonium FluorideHCID 131728364(3S,4R)-3-(tert-Butyl-dimethyl-silanyloxymethyl)-4-({[4-ethyl-3-(3-methoxy-propoxy)-benzoyl]-isopropyl-amino}-methyl)-pyrrolidine-1-carboxylic acid tert-butyl ester

Product 1

HCID 68618170(3R,4S)-3-({[4-Ethyl-3-(3-methoxy-propoxy)-benzoyl]-isopropyl-amino}-methyl)-4-hydroxymethyl-pyrrolidine-1-carboxylic acid tert-butyl ester

Reagents, catalysts & solvents 1

HCID 21226129Dichloromethane methanolSolvent

Procedure

From (3S,4R)-3-(tert-butyl-dimethyl-silanyloxymethyl)-4-({[4-ethyl-3-(3-methoxy-propoxy)-benzoyl]-isopropyl-amino}-methyl)-pyrrolidine-1-carboxylic acid tert-butyl ester (13.1 g, 21.6 mmol) and TBAF (17 g, 54 mmol), and purification by flash chromatography on silica gel (CH2Cl2/MeOH 95:5) to give the title compound as yellow oil. TLC, Rf (AcOEt)=0.4,MS (LC-MS): 437.3 [M+H-tBu]+; tR (HPLC, Macherey-Nagel Nucleosil C18 column, 10-100% CH3CN/H2O/5 min, 100% CH3CN/3 min, CH3CN and H2O containing 0.1% TFA, flow: 1.5 mL/min): 6.74 min.

Sources & evidence

ORD record
ord-cca118e06c3b4ce78594b38261152421
Source dataset
uspto-grants-2010_10
Patent number
US07807709B2

Reaction notes

Loading…