Diisopropylethylamine → tert-butyl (1S,3S,4S)-1-benzyl-3-hydroxy-4-({(2S)-2-[(methoxycarbonyl)amino]-3,3-dimethylbutanoyl}amino)-5-[4-(2-pyridinyl)phenyl]pentylcarbamate

HRID 1174171Notes

Reaction equation

HRID 1174171 reaction equation
[NH2:1][C@@H:2]([CH2:22][C:23]1[CH:28]=[CH:27][C:26]([C:29]2[CH:34]=[CH:33][CH:32]=[CH:31][N:30]=2)=[CH:25][CH:24]=1)[C@@H:3]([OH:21])[CH2:4][C@@H:5]([NH:13][C:14](=[O:20])[O:15][C:16]([CH3:19])([CH3:18])[CH3:17])[CH2:6][C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1.[CH3:35][O:36][C:37]([NH:39][C@@H:40]([C:44]([CH3:47])([CH3:46])[CH3:45])[C:41](O)=[O:42])=[O:38].CCOP(ON1N=NC2C=CC=CC=2C1=O)(OCC)=O.C(N(CC)C(C)C)(C)C>C1COCC1>[CH2:6]([C@H:5]([NH:13][C:14](=[O:20])[O:15][C:16]([CH3:17])([CH3:18])[CH3:19])[CH2:4][C@H:3]([OH:21])[C@@H:2]([NH:1][C:41](=[O:42])[C@@H:40]([NH:39][C:37]([O:36][CH3:35])=[O:38])[C:44]([CH3:47])([CH3:46])[CH3:45])[CH2:22][C:23]1[CH:28]=[CH:27][C:26]([C:29]2[CH:34]=[CH:33][CH:32]=[CH:31][N:30]=2)=[CH:25][CH:24]=1)[C:7]1[CH:8]=[CH:9][CH:10]=[CH:11][CH:12]=1

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 42939953-(Diethoxyphosphoryloxy)-1,2,3-benzotriazin-4(3H)-oneHCID 11263950N-(Methoxycarbonyl)-L-tert-leucineHCID 86726181tert-butyl (1S,3S,4S)-4-amino-1-benzyl-3-hydroxy-5-[4-(2-pyridinyl)phenyl]pentylcarbamate

Product 1

HCID 42626173tert-butyl (1S,3S,4S)-1-benzyl-3-hydroxy-4-({(2S)-2-[(methoxycarbonyl)amino]-3,3-dimethylbutanoyl}amino)-5-[4-(2-pyridinyl)phenyl]pentylcarbamateYield 56.6%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Conditions

Temperature
25 °C

Procedure

A solution containing the product from Example 23Q (0.442 g, 0.95 mmol) in THF (10 mL) was treated with the product from Example 1F (0.20 g, 1.06 mmol), DEPBT (0.45 g, 1.50 mmol), and N,N-diisopropylethylamine (0.85 mL, 4.88 mmol), stirred at 25° C. for 1 hour, and partitioned between ethyl acetate and 10% Na2CO3 solution. The organic phase was washed with additional 10% Na2CO3 solution and brine, dried over MgSO4, filtered and concentrated. The residue was chromatographed on silica gel eluting with 0-75% ethyl acetate/dichloromethane to give the title compound (0.34 g, 56% yield).

Workup

  1. custompartitioned between ethyl acetate and 10% Na2CO3 solution
  2. washThe organic phase was washed with additional 10% Na2CO3 solution and brine
  3. dry with materialdried over MgSO4
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe residue was chromatographed on silica gel eluting with 0-75% ethyl acetate/dichloromethane

Sources & evidence

ORD record
ord-7167480202904a57b0cb124c104a31a4
Source dataset
uspto-grants-2010_11
Patent number
US07834043B2

Reaction notes

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