Benzylamine → (3S*,4R*)-3-benzylcarbamoyl-4-({isopropyl-[4-methoxy-3-(3-methoxy-propoxy)-benzoyl]-amino}-methyl)-pyrrolidine-1-carboxylic acid tert-butyl ester

HRID 1158329Notes

Reaction equation

HRID 1158329 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:12][C@@H:11]([CH2:13][N:14]([CH:31]([CH3:33])[CH3:32])[C:15](=[O:30])[C:16]2[CH:21]=[CH:20][C:19]([O:22][CH3:23])=[C:18]([O:24][CH2:25][CH2:26][CH2:27][O:28][CH3:29])[CH:17]=2)[C@H:10]([C:34](O)=[O:35])[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].O=C1N(P(Cl)(N2CCOC2=O)=O)CCO1.C(N(CC)CC)C.[CH2:59]([NH2:66])[C:60]1[CH:65]=[CH:64][CH:63]=[CH:62][CH:61]=1>C(Cl)Cl>[C:1]([O:5][C:6]([N:8]1[CH2:12][C@@H:11]([CH2:13][N:14]([CH:31]([CH3:33])[CH3:32])[C:15](=[O:30])[C:16]2[CH:21]=[CH:20][C:19]([O:22][CH3:23])=[C:18]([O:24][CH2:25][CH2:26][CH2:27][O:28][CH3:29])[CH:17]=2)[C@H:10]([C:34](=[O:35])[NH:66][CH2:59][C:60]2[CH:65]=[CH:64][CH:63]=[CH:62][CH:61]=2)[CH2:9]1)=[O:7])([CH3:3])([CH3:2])[CH3:4]

Participants

6

Reactant 4

HCID 7504BenzylamineHCID 8471TriethylamineHCID 152842Bis(2-oxo-3-oxazolidinyl)phosphinic chlorideHCID 59512388(3S*,4R*)-4-({Isopropyl-[4-methoxy-3-(3-methoxy-propoxy)-benzoyl]-amino}-methyl)-pyrrolidine-1,3-dicarboxylic acid 1-tert-butyl ester

Product 1

HCID 68616154(3S*,4R*)-3-benzylcarbamoyl-4-({isopropyl-[4-methoxy-3-(3-methoxy-propoxy)-benzoyl]-amino}-methyl)-pyrrolidine-1-carboxylic acid tert-butyl ester

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a stirring solution of (3S*,4R*)-4-({isopropyl-[4-methoxy-3-(3-methoxy-propoxy)-benzoyl]-amino}-methyl)-pyrrolidine-1,3-dicarboxylic acid 1-tert-butyl ester (70 mg, 0.138 mmol), bis(2-oxo-3-oxazolidinyl)phosphinic chloride (42 mg, 0.166 mmol) and triethylamine (77 μL, 0.552 mmol) in CH2Cl2 (3 mL), benzylamine (18 μL, 0.166 mmol) is added. The resulting solution is refluxed for 2 h and then quenched by the addition of aqueous NaHCO3 solution. The organic layer is separated, and the aqueous phase is extracted 3 times with CH2Cl2. The combined organic extracts are dried (Na2SO4), and the solvent is removed in vacuo. The crude material is purified by preparative HPLC (C18-ODB-AQ, 5 μm, 20×50 mm, YMC, eluent: CH3CNIH2O+0.1 % HCOOH flow: 20 mL/min). The HPLC fractions are collected and lyophilized to afford the title product. TLC, Rf (CH2Cl2/MeOH 95:5)=0.2. MS (LC-MS): 598.0 [M+H]+; tR (HPLC, C18 column, 10-100% CH3CN/H2O/5 min, 100% CH3CN/3 min, CH3CN and H2O containing 0.1% TFA, flow: 1.5 mL/min): 5.60 min.

Workup

  1. temperatureThe resulting solution is refluxed for 2 h
  2. customquenched by the addition of aqueous NaHCO3 solution
  3. customThe organic layer is separated
  4. extractionthe aqueous phase is extracted 3 times with CH2Cl2
  5. dry with materialThe combined organic extracts are dried (Na2SO4)
  6. customthe solvent is removed in vacuo
  7. customThe crude material is purified by preparative HPLC (C18-ODB-AQ, 5 μm, 20×50 mm, YMC, eluent: CH3CNIH2O+0.1 % HCOOH flow: 20 mL/min)
  8. customThe HPLC fractions are collected

Sources & evidence

ORD record
ord-2a1d31b909ed49f7bc5b1e424c823317
Source dataset
uspto-grants-2010_10
Patent number
US07807709B2

Reaction notes

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