Pyridine → N-{3-[(4R)-1-hydroxy-4-methyl-4-(3-methylbutyl)-3-oxo-3,4-dihydronaphthalen-2-yl]-1,1-dioxido-4H-1,2,4-benzothiadiazin-7-yl}acetamide

HRID 2224903Notes

Reaction equation

HRID 2224903 reaction equation
Cl.[NH2:2][C:3]1[CH:32]=[CH:31][C:6]2[NH:7][C:8]([C:13]3[C:14](=[O:30])[C@:15]([CH3:29])([CH2:24][CH2:25][CH:26]([CH3:28])[CH3:27])[C:16]4[C:21]([C:22]=3[OH:23])=[CH:20][CH:19]=[CH:18][CH:17]=4)=[N:9][S:10](=[O:12])(=[O:11])[C:5]=2[CH:4]=1.[C:33](OC(=O)C)(=[O:35])[CH3:34].N1C=CC=CC=1>C(Cl)Cl>[OH:23][C:22]1[C:21]2[C:16](=[CH:17][CH:18]=[CH:19][CH:20]=2)[C@@:15]([CH3:29])([CH2:24][CH2:25][CH:26]([CH3:28])[CH3:27])[C:14](=[O:30])[C:13]=1[C:8]1[NH:7][C:6]2[CH:31]=[CH:32][C:3]([NH:2][C:33](=[O:35])[CH3:34])=[CH:4][C:5]=2[S:10](=[O:12])(=[O:11])[N:9]=1

Participants

5

Reactant 3

HCID 1049PyridineHCID 7918Acetic AnhydrideHCID 135869462(1R)-3-(7-amino-1,1-dioxido-4H-1,2,4-benzothiadiazin-3-yl)-4-hydroxy-1-methyl-1-(3-methylbutyl)naphthalen-2(1 H)-one hydrochloride

Product 1

HCID 135409606N-{3-[(4R)-1-hydroxy-4-methyl-4-(3-methylbutyl)-3-oxo-3,4-dihydronaphthalen-2-yl]-1,1-dioxido-4H-1,2,4-benzothiadiazin-7-yl}acetamideYield 91%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

A solution of Example 39H (0.050 g, 0.105 mmol), acetic anhydride (0.011 mL, 0.116 mmol), and pyridine (0.068 mL, 0.840 mmol) in methylene chloride (2 mL) was stirred at 25° C. for 4 hours. The solution was concentrated in vacuo and the residue was chromatographed on silica gel eluting with methylene chloride and 2.5% methanol in methylene chloride to give the desired product (0.046 g, 90%). 1H NMR (300 MHz, DMSO-d6): δ ppm 0.43 (m, 1H) 0.77 m, 7 H) 1.33 m, 1 H) 1.56 m, 3 H) 2.06 m, 4 H) 2.23 m, 1 H) 7.53 (m, 1 H) 7.66 m, 1 H) 7.77 m, 3 H) 8.16 m, 1 H) 8.29 m, 1 H) 10.38 m, 1 H) 13.84 (m, 1 H).

Workup

  1. concentrationThe solution was concentrated in vacuo
  2. customthe residue was chromatographed on silica gel eluting with methylene chloride and 2.5% methanol in methylene chloride

Sources & evidence

ORD record
ord-6e9f82ffcab04e0dbaaaedc83ead7468
Source dataset
uspto-grants-2008_05
Patent number
US07378414B2

Reaction notes

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