Water → 1-[(5-chloro-1,3-benzothiazol-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-[(R)-3-tert-butoxycarbonyl-amino-piperidin-1-yl]-xanthine

HRID 1773327Notes

Reaction equation

HRID 1773327 reaction equation
[Cl:1][C:2]1[CH:3]=[CH:4][C:5]2[S:9][C:8]([CH2:10][N:11]3[C:20](=[O:21])[C:19]4[N:18]([CH2:22][C:23]#[C:24][CH3:25])[C:17](Br)=[N:16][C:15]=4[N:14]([CH3:27])[C:12]3=[O:13])=[N:7][C:6]=2[CH:28]=1.[C:29]([O:33][C:34]([C@@H:36]1[CH2:41][CH2:40][CH2:39][N:38](N)[CH2:37]1)=[O:35])([CH3:32])([CH3:31])[CH3:30].C(=O)([O-])[O-].[K+].[K+].O.C[N:51](C)C=O>>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]2[S:9][C:8]([CH2:10][N:11]3[C:20](=[O:21])[C:19]4[N:18]([CH2:22][C:23]#[C:24][CH3:25])[C:17]([N:38]5[CH2:39][CH2:40][CH2:41][CH:36]([C:34]([O:33][C:29]([CH3:32])([CH3:31])[CH3:30])=[O:35])[C@@H:37]5[NH2:51])=[N:16][C:15]=4[N:14]([CH3:27])[C:12]3=[O:13])=[N:7][C:6]=2[CH:28]=1

Participants

6

Reactant 5

HCID 962WaterHCID 6228DimethylformamideHCID 11430Potassium CarbonateHCID 29939704(R)-3-tert-butoxycarbonyl-aminopiperidineHCID 1180349711-[(5-Chloro-1,3-benzothiazol-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-bromo-xanthine

Product 1

HCID 1180355021-[(5-chloro-1,3-benzothiazol-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-[(R)-3-tert-butoxycarbonyl-amino-piperidin-1-yl]-xanthineYield 72.6%

Procedure

By utilizing the well known method, 1-[(5-chloro-1,3-benzothiazol-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-bromo-xanthine 3b (460 mg, 0.96 mmol) was dissolved in N,N-dimethylformamide (12 ml). (R)-3-tert-butoxycarbonyl-aminopiperidine (193 mg, 0.96 mmol) and potassium carbonate (200 mg, 1.44 mmol) were added to give a reaction mixture. The reaction mixture was reacted at 75° C. for 2 hours, and TLC was used to monitor the reaction progress. After the reaction was completed, the obtained reaction mixture was cooled to room temperature. The cooled reaction solution was poured into cool water, suction filtered, and the obtained solid was washed with water, dried to give 1-[(5-chloro-1,3-benzothiazol-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-[(R)-3-tert-butoxycarbonyl-amino-piperidin-1-yl]-xanthine 3c (417 mg, grey solid), yield: 72.6%.

Workup

  1. customto give a reaction mixture
  2. customThe reaction mixture was reacted at 75° C. for 2 hours
  3. customthe obtained reaction mixture
  4. customThe cooled reaction solution
  5. additionwas poured
  6. filtrationfiltered
  7. washthe obtained solid was washed with water
  8. customdried

Sources & evidence

ORD record
ord-266a89cad0f94b9e8200360448b2b201
Source dataset
uspto-grants-2016_02
Patent number
US09255098B2

Reaction notes

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