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Structure of 118488-08-7
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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. : | 118488-08-7 |
Formula : | C6H9NS |
M.W : | 127.21 |
SMILES Code : | CC(N)C1=CSC=C1 |
MDL No. : | MFCD08452688 |
InChI Key : | KXCGQPCMPZULFH-UHFFFAOYSA-N |
Pubchem ID : | 14249915 |
GHS Pictogram: |
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Signal Word: | Danger |
Hazard Statements: | H301 |
Precautionary Statements: | P301+P310 |
Class: | 6.1 |
UN#: | 2810 |
Packing Group: | Ⅲ |
* 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 |
---|---|---|
75% | Preparation 8 1-Thiophen-3-yl-ethylamine The synthetic procedure used in this preparation is outlined below in Scheme J. To a solution of 3-Acetylthiophene (2.0 g, 15.85 mmol) and ammonium acetate (12.2 g, 158.5 mmol) in methanol (50 mL) was added sodium cyanoborohydride (0.7 g, 11.1 mmol) in one portion. The reaction mixture was stirred overnight at room temperature. After removal of methanol, water (20 mL) was added to the residue and the resulting solution was basified by addition of sodium hydroxide to pH=13. The aqueous solution was extracted with dicholromethane and the combined organic phase was dried over sodium sulfate. Removal of the solvent under reduced pressure afforded 1.5 g 1-thiophen-3-yl-ethylamine, yield: 75%. MS (M+H)=128. | |
75% | Preparation 7: l-Thiophen-3-yl-ethylamine; The synthetic procedure used in this preparation is outlined below in Scheme I. To a solution of 3-Acetylthiophene (2.0 g, 15.85 mmol) and ammonium acetate (12.2 g, 158.5 mmol) in methanol (50 mL) was added sodium cyanoborohydride (0.7 g, 1 l.lmmol) in one portion. The reaction mixture was stirred overnight at RT. After removal of methanol, water (20 mL) was added to the residue and the resulting solution was basified by addition of sodium hydroxide to pH =13. The aqueous solution was ex- EPO <DP n="63"/>tracted with dichloromethane and the combined organic phase was dried over sodium sulfate. Removal of the solvent under reduced pressure afforded 1.5 g l-thiophen-3-yl- ethylamine, yield: 75%. MS (M+H) = 128. | |
75% | The synthetic procedure used in this preparation is outlined below in Scheme I. To a solution of 3-Acetylthiophene (2.0 g, 15.85 mmol) and ammonium acetate (12.2 g, 158.5 mmol) in methanol (50 mL) was added sodium cyanoborohydride (0.7 g, 11.1 mmol) in one portion. The reaction mixture was stirred overnight at room temperature. After removal of methanol, water (20 mL) was added to the residue and the resulting solution was basified by addition of sodium hydroxide to pH=13. The aqueous solution was extracted with dicholromethane and the combined organic phase was dried over sodium sulfate. Removal of the solvent under reduced pressure afforded 1.5 g 1-thiophen-3-yl-ethylamine, yield: 75%. MS (M+H)=128. |
75% | With ammonium acetate; sodium cyanoborohydride; In methanol; at 20.0℃; | Preparation 8 1-Thiophen-3-yl-ethylamine The synthetic procedure used in this preparation is outlined below in Scheme J. 3-Acetylthiophene (2.0 g, 15.85 mmol) and ammonium acetate (12.2 g, 158.5 mmol) in methanol (50 mL) was added sodium cyanoborohydride (0.7 g, 11.1 mmol) in one portion. The reaction mixture was stirred overnight at room temperature. After removal of methanol, water (20 mL) was added to the residue and the resulting solution was basified by addition of sodium hydroxide to pH=13. The aqueous solution was extracted with dichloromethane and the combined organic phase was dried over sodium sulfate. Removal of the solvent under reduced pressure afforded 1.5 g 1-thiophen-3-yl-ethylamine, yield: 75%. MS (M+H)=128. |
With ammonium acetate; sodium cyanoborohydride; In methanol; at 20.0℃; for 16.0h; | Step 1. To a solution of compound 3-1 (2 g, 15.9 mmol) in MeOH (20 mL) was added NH4OAc (12.2 g, 0.159 mol) and NaBH3CN (3.5 g, 55.5 mmol) at 20C. After the mixture was stirred at 20C for 16 h, it was concentrated. The residual was partitioned between EtOAc (50 mL) and NaOH solution (5 M, 5 mL) (adjust pH>13). The organic layer was washed with brine (20 mLx2), concentrated and purified by column (20 %-30 % MeOH in DCM) to give the crude compound 3-2 (800 mg, 40% yield). lH NMR (400 MHz, DMSO-/ ) delta 7.63 - 7.61 (d, J= 8.0 Hz, 1 H), 7.58 - 5.57 (m, 1 H), 7.25 - 7.23 (d, J= 8.0 Hz , 2 H), 4.53 - 4.48 (m, 1 H), 1.51 - 1.49 (d, J= 8.0 Hz , 3 H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
90% | 1-(3-Thienyl)ethylamine A solution of the above azide (5.0 g, 32.6 mmol) in Et2 O (80 ml) was added to a suspension of lithium aluminum hydride (1.7 g, 44.8 mmol) in Et2 O (80 ml) under a nitrogen atmosphere at such a rate as to maintain a gentle reflux. An external heat source was applied to the reaction mixture and was heated to reflux for an additional hour. H2 O (2 ml) was added carefully to the mixture, followed by 15% NaOH in H2 O (2 ml) and H2 O (6 ml). The inorganic materials were filtered from this reaction mixture and washed with Et2 O. The combined organic filtrates were dried over MgSO4, and the solvent was removed in vacuo to give the product (3.7 g, 90% yield) as an amber oil; IR (neat) 1590, 2760-3660 and 2990 cm-1; mass spectrum m/z 127 (M+); 1 H NMR (CDCl3) delta1.42 (d, J=6 Hz, 3H, CHCH3), 1.62 (s, 2H, exchanges with D2 O, NH2), 4.20 (q, J=6 Hz, 1H, CHCH3), 7.00-7.40 (m, 3H, thiophene-H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With N-ethyl-N,N-diisopropylamine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate; In N,N-dimethyl-formamide; at 20.0℃; for 2.0h; | Step 2. To a solution of compound 3-3 (500 mg, 1.23 mmol) in DMF (3 mL) was added compound 3-2 (600 mg, 4.7 mmol), DIPEA (0.5 mL, 3 mmol) and HATU (740 mg, 2 mmol) at 20C. After the mixture was stirred at 20C for 2 h, it was purified by prep-HPLC to give 3-4 (360 mg, 57% yield). Compound 3-4 (300 mg) was separated by SFC separation to give 2 isomers 3-4A and 3-4B. NMR (400 MHz, DMSO-/ ) delta 10.03 (s, 1 H), 8.12 - 8.10 (m, 1H), 7.9 -7.75 (m, 1 H), 7.55 - 7.52 (m, 2 H), 7.45 - 7.35 (m, 2 H), 7.3 - 7.2 (m, 3 H), 7.04 (m, 1 H), 6.0 (m, 1 H), 5.5 - 5.2 (m, 2 H), 5.1 - 5.0 (m, 1 H), 4.45 - 4.35 (m, 3 H), 3.1 - 2.9 (m, 4 H), 2.43 - 2.39 (m, 4 H), 1.8 - 1.7 (m, 3 H), 1.7 - 1.5 (m, 1 H), 1.5-1.33 (m, 5 H). |