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}-1h-benzimidazole-2-sulfonamide

HRID 2224943Notes

Reaction equation

HRID 2224943 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.N1C=CC=CC=1.[N:39]1[C:43]2[CH:44]=[CH:45][CH:46]=[CH:47][C:42]=2[NH:41][C:40]=1[S:48](Cl)(=[O:50])=[O:49]>CC(C)=O>[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][S:48]([C:40]3[NH:39][C:43]4[CH:44]=[CH:45][CH:46]=[CH:47][C:42]=4[N:41]=3)(=[O:49])=[O:50])=[CH:4][C:5]=2[S:10](=[O:12])(=[O:11])[N:9]=1

Participants

5

Reactant 3

HCID 1049PyridineHCID 110638611H-Benzo[d]imidazole-2-sulfonyl chlorideHCID 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 136384791n-{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}-1h-benzimidazole-2-sulfonamideYield 45%

Reagents, catalysts & solvents 1

HCID 180AcetoneSolvent

Procedure

A mixture of Example 39H (47.6 mg, 0.10 mmol), pyridine (64 mg, 0.80 mmol), and 2-benzimidazole sulfonyl chloride (87 mg, 0.40 mmol, prepared according to the procedure reported by S. M. Deshpande et al, J. Med. Chem. 1970, 13, 143-144) in acetone (2 mL) was stirred at rt for 16 h. The reaction mixture was evaporated in vacuo and partitioned between ethyl acetate and water. The organic phase was separated, dried (MgSO4), filtered, and evaporated in vacuo. The residue was purified by chromatography on silica gel eluting with 99:1 dichloromethane/methanol to provide the title compound (28.0 mg, 45% yield). 1H NMR (300 MHz, DMSO-d6) δ 0.39 m, 1 H) 0.67 (d, J=6.62 Hz, 3 H) 0.70 (d, J=6.62 Hz, 3H) 0.77 m, 1 H) 1.29 m, 1 H) 1.54 (s, 3 H) 2.04 m, 1 H) 2.19 m, 1 H) 7.35 (dd, J=6.25, 2.94 Hz, 2 H) 7.51 m, 1 H) 7.64 m, 8 H) 8.13 (d, J=7.72 Hz, 1 H) 11.51 (s, 1 H) 13.77 (s, 1H). MS (ESI+) m/z 620.0 (M+H)+, 641.9 (M+H—Na)+, (ESI−) m/z 618.0 (M−H)−.

Workup

  1. customThe reaction mixture was evaporated in vacuo
  2. custompartitioned between ethyl acetate and water
  3. customThe organic phase was separated
  4. dry with materialdried (MgSO4)
  5. filtrationfiltered
  6. customevaporated in vacuo
  7. customThe residue was purified by chromatography on silica gel eluting with 99:1 dichloromethane/methanol

Sources & evidence

ORD record
ord-5545f7f541a24ac8a675f70a9014a666
Source dataset
uspto-grants-2008_05
Patent number
US07378414B2

Reaction notes

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