Quinazolinone, quinolone and related analogs as sirtuin modulators
A compound and unsaturated technology, applied in the direction of drug combination, medical preparations containing active ingredients, metabolic diseases, etc., can solve the problems of reducing and prolonging the life span of wild-type cells
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Embodiment 1
[0334] Example 1. N-(3-methyl-4-oxo-2-(3-(trifluoromethyl)phenyl)-3,4-dihydroquinazolin-8-yl) Synthesis of pyridine-2-carboxamide (compound 239):
[0335] Step 1. 8-Nitro-2-(3-(trifluoromethyl)phenyl)-4H-benzo[d][1,3] Preparation of oxazin-4-one (3):
[0336]
[0337] 3-(Trifluoromethyl)benzoyl chloride 2 (4.5 mL, 30.2 mmol) was added to a suspension of 2-amino-3-nitrobenzoic acid 1 (5.0 g, 27.5 mmol) in pyridine (65 mL). The reaction mixture was stirred at room temperature for 12 h, then poured into ice-cooled H 2 O (300mL). The resulting precipitate was collected by filtration and washed with H 2 O washed and dried in vacuo to afford 3 (5 g, 51% yield) as a yellow solid which was used without further purification.
[0338] Step 2. Preparation of 3-methyl-8-nitro-2-(3-(trifluoromethyl)phenyl)quinazolin-4(3H)-one (4):
[0339]
[0340]Methylamine (6.3 mL, 12.5 mmol) in THF was added to 8-nitro-2-(3-(trifluoromethyl)phenyl)-4H-benzo[d][1,3] In a suspension of a...
Embodiment 2
[0347] Example 2. N-(3-methyl-4-oxo-2-phenyl-3,4-dihydroquinazolin-8-yl)pyridine-3-sulfonamide Synthesis of (Compound 361):
[0348]
[0349] Pyridine-3-sulfonyl chloride hydrochloride 7 (280 mg, 1.3 mmol) was added to 8-amino-3-methyl-2-(3-(trifluoromethyl)phenyl)quinazoline-4(3H)- Ketone 5 (100 mg, 0.313 mmol) in pyridine (5 mL). The reaction mixture was heated at 80°C for 12 hours. Pyridine was removed in vacuo. The residue was dissolved in CH 2 Cl 2 , with saturated NaHCO 3 Washed with aqueous solution, dried (MgSO 4 ) and concentrate. The crude residue was purified by MPLC with CH 2 Cl 2 / MeOH (0-10%) elution followed by CH 3 CN was recrystallized to give compound 361 (77 mg, 53% yield). MS(ESI) calculated value C 21 h 15 f 3 N 4 o 3 S: 460.08; found value: 461 [M+H].
Embodiment 3
[0350] Example 3. N-(4-oxo-2-(3-(trifluoromethyl)phenyl)-3,4-dihydroquinazolin-8-yl)pyridine-2- Synthesis of formamide (compound 231):
[0351] Step 1. Preparation of 8-nitro-2-(3-(trifluoromethyl)phenyl)quinazolin-4(3H)-one (8):
[0352]
[0353] 8-nitro-2-(3-(trifluoromethyl)phenyl)-4H-benzo[d][1,3] Azin-4-one 3 (150 mg, 0.45 mmol) was added to a solution of ammonia (5.0 mL, 10 mmol) in IPA. The reaction mixture was heated at gentle reflux for 12 hours and then cooled to room temperature. Pour the reaction mixture into H 2 O, the resulting precipitate was collected by filtration and washed with H 2 O washed and dried in vacuo. The crude residue was recrystallized from EtOAc to afford 8 (91 mg, 62% yield) as a yellow solid.
[0354] Step 2. Preparation of 8-amino-2-(3-(trifluoromethyl)phenyl)quinazolin-4(3H)-one (9):
[0355]
[0356] Compound 9 was prepared in 99% yield by a method analogous to the preparation of 8-amino-3-methyl-2-(3-(trifluoromethyl)phenyl...
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