Triethylamine → 4-(2-Oxo-1,4-dihydro-2h-quinazolin-3-yl)-piperidine-1-carboxylic acid[1-(6-benzyloxy-pyridin-3-ylmethyl)-2-[1,4']bipiperidinyl-1'-yl-2-oxo-ethyl]-amide

HRID 1353578Notes

Reaction equation

HRID 1353578 reaction equation
CO[C:3](=[O:40])[CH:4]([NH:20][C:21]([N:23]1[CH2:28][CH2:27][CH:26]([N:29]2[CH2:38][C:37]3[C:32](=[CH:33][CH:34]=[CH:35][CH:36]=3)[NH:31][C:30]2=[O:39])[CH2:25][CH2:24]1)=[O:22])[CH2:5][C:6]1[CH:7]=[N:8][C:9]([O:12][CH2:13][C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=2)=[CH:10][CH:11]=1.O.[OH-].[Li+].[N:44]1([CH:50]2[CH2:55][CH2:54][NH:53][CH2:52][CH2:51]2)[CH2:49][CH2:48][CH2:47][CH2:46][CH2:45]1.C(N(CC)CC)C.[PH2](Cl)=O>CO.O>[CH2:13]([O:12][C:9]1[N:8]=[CH:7][C:6]([CH2:5][CH:4]([NH:20][C:21]([N:23]2[CH2:24][CH2:25][CH:26]([N:29]3[CH2:38][C:37]4[C:32](=[CH:33][CH:34]=[CH:35][CH:36]=4)[NH:31][C:30]3=[O:39])[CH2:27][CH2:28]2)=[O:22])[C:3]([N:53]2[CH2:54][CH2:55][CH:50]([N:44]3[CH2:49][CH2:48][CH2:47][CH2:46][CH2:45]3)[CH2:51][CH2:52]2)=[O:40])=[CH:11][CH:10]=1)[C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1

Participants

8

Reactant 5

HCID 8471TriethylamineHCID 786071,4'-BipiperidineHCID 168937Lithium hydroxide, monohydrateHCID 588642363-(6-benzyloxy-pyridin-3-yl)-2-{[4-(2-oxo-1,4-dihydro-2H-quinazolin-3-yl)-piperidine-1-carbonyl]-amino}-propionic acid methyl esterHCID 178527016HCID 178527016, compound

Product 1

HCID 100097694-(2-Oxo-1,4-dihydro-2h-quinazolin-3-yl)-piperidine-1-carboxylic acid[1-(6-benzyloxy-pyridin-3-ylmethyl)-2-[1,4']bipiperidinyl-1'-yl-2-oxo-ethyl]-amide

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 962WaterSolvent

Procedure

To a stirred solution of 3-(6-benzyloxy-pyridin-3-yl)-2-{[4-(2-oxo-1,4-dihydro-2H-quinazolin-3-yl)-piperidine-1-carbonyl]-amino}-propionic acid methyl ester (59 mg, 0.11 mmol) in methanol (3 mL) was added a solution of lithium hydroxide monohydrate (9.1 mg, 2 equiv) in water (0.5 mL). The reaction was stirred 2 h at room temperature, cooled to 0° C., quenched by addition of 1N hydrochloric acid (0.15 mL), and concentrated. The crude product was used without purification. The crude acid was dissolved in methylene chloride (2 mL, 0° C.), and treated sequentially with 4-piperidino-piperidine (34 mg, 1.8 equiv), triethylamine (35 μL, 2.3 equiv.), and bis-2-oxo-3-oxazolidinyl)phoshinic chloride (34 mg, 1.2 equiv). The ice bath was removed and the reaction allowed to stir overnight. The reaction was concentrated and purified by Prep TLC to give 30.3 mg (41%). LC/MS: tR=1.49 min, 680.29 (MH)+.

Workup

  1. temperaturecooled to 0° C.
  2. customquenched by addition of 1N hydrochloric acid (0.15 mL)
  3. concentrationconcentrated
  4. customThe crude product was used without purification
  5. dissolutionThe crude acid was dissolved in methylene chloride (2 mL, 0° C.)
  6. customThe ice bath was removed
  7. stirringto stir overnight
  8. concentrationThe reaction was concentrated
  9. custompurified by Prep TLC
  10. customto give 30.3 mg (41%)

Sources & evidence

ORD record
ord-9a857c728b9744458048fdbc8d607d6d
Source dataset
uspto-grants-2007_05
Patent number
US07220862B2

Reaction notes

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