Structure of 144163-68-8
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The BI-3802 was designed by Boehringer Ingelheim and could be obtained free of charge through the Boehringer Ingelheim open innovation portal opnMe.com, associated with its negative control.
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CAS No. : | 144163-68-8 |
Formula : | C5H8N2S |
M.W : | 128.20 |
SMILES Code : | CNCC1=NC=CS1 |
MDL No. : | MFCD02854205 |
InChI Key : | MNHGOWYUJYMPGV-UHFFFAOYSA-N |
Pubchem ID : | 18939834 |
GHS Pictogram: |
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Signal Word: | Warning |
Hazard Statements: | H302 |
Precautionary Statements: | P280-P305+P351+P338 |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
2- (N-Methylaminomethyl)Thiazole 70 [0227] To a flask containing dry DCM (60 mL) and 4A molecular sieves were added methylamine (2.0M solution in THF, 4.0 mL, 8.0 mmol), Na2S04 (1.42 g, 10.0 mmol), and 2-thiazolecarboxaldehyde (0.452 g, 4.0 mmol). The reaction mixture was stirred at room temperature and monitored by ¹H NMR. Upon completion, the reaction mixture filtered to remove the Na2S04 and molecular sieves and the filtrate was concentrated under reduced pressure. The crude imine was dissolved in absolute EtOH (40 mL), treated with NaBH4 (0.227 g, 6.0 mmol) and aged for several hours at rt (monitored by TLC). The reaction mixture was then quenched with water (8 mL) and concentrated under reduced pressure. The residue was treated with brine, extracted with DCM (3x50 mL), and the combined organic layers were dried, and evaporated under reduced pressure to give the desired product in 69% yield. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With N-ethyl-N,N-diisopropylamine; In N,N-dimethyl-formamide; at 20 - 60℃; for 2.0h; | General Procedure: Chloride 8 (0.10 g, 0.35 mmol) was dissolved in DMF (2 mL). Diisopropylethylamine (0.12 mL, 0.70 mmol) and (2-methylthiazol-4-yl)methanamine (0.07 mg, 0.53 mmol) were added and the reaction was stirred at 60 C for 18 h. The crude solution was purified directly by HPLC (Waters 2525 HPLC, Gradient of 20% -> 60% acetonitrile in water) and lyophilized to yield amine 45 as a pure solid. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
14% | With N-ethyl-N,N-diisopropylamine; In 1-methyl-pyrrolidin-2-one; at 100℃;Inert atmosphere; Sealed tube; | 4,6-dibromobenzo[c][l ,2,5]oxadiazole (1.1509 g, 4.14 mmol) and N-methyl-l-(thiazol-2- yl)methanamine (4.97 mmol) were massed into a tube. The tube was evacuated and flushed with argon for three cycles. NMP (6 mL) and DIPEA (0.94 mL, 5.38 mmol) were then added and the tube was sealed and heated to 100 C overnight. Upon cooling to room temperature the mixture was diluted with water and EtOAc. The layers were separated and the aqueous layer was back- extracted with EtOAc. The combined organic layers were then washed with water (5x), brine, dried (Na2S04), filtered and concentrated to give an oil. The crude oil was then purified via flash column chromatography (30 % EtOAc / hexane) to afford 0.1872 g (14 % yield) of aniline. This aniline (0.1872 g, 0.58 mmol) and 3-formylphenylboronic acid (0.0899 g, 0.60 mmol) were massed into a tube. The tube was evacuated and purged with argon (3x). DME (1.5 mL) and 2M Na2C03 (0.9 mL, 1.74 mmol) were then added followed by Pd(PPh3)4 (0.0335 g, 0.029 mmol). The tube was then sealed and heated to 85 C overnight. Upon cooling to room temperature the mixture was diluted with water and EtOAc. The layers were separated and the aqueous layer was back-extracted with EtOAc. The combined organic layers were then washed with water (5x), brine, dried (Na2S04), filtered and concentrated to give an oil. This crude oil was then dissolved in THF (4 mL) and cooled to 0 C. CF3TMS (0.17 mL, 1.16 mmol) was added followed by TBAF (0.06 mL, 1.0 M solution in THF). The reaction was then stirred for 60 minutes before re- cooling to 0C and 4N HC1 (aq) was added and stirred for 60 minutes. The mixture was diluted with water and EtOAc. The layers were separated and the aqueous layer was basified. The aqueous layer was then re-extracted with EtOAc. The combined organic layers were was with water, brine, dried (Na2S04), filtered and concentrated to give a crude oil. This material was purified via flash column chromatography with step-gradient (100 % DCM to 0.5 % MeOH / DCM) to afford 0.0339 g (14 % yield, 3 steps) of TRV-1459. *H NMR (CDC13, 700 MHz) δ = 7.77 (d, J = 3.2 Hz, 1H), 7.73 (s, 1H), 7.66 (dt, J = 7.2, 1.6 Hz, 1H), 7.55-7.51 (m, 2H), 7.31 (s, 1H), 7.30 (d, J = 3.2 Hz, 1H), 6.46 (s, 1H), 5.46 (s, 2H), 5.13 (q, J = 6.6 Hz, 1H), 3.32 (s, 3H). |
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