Structure of 1035229-32-3
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CAS No. : | 1035229-32-3 |
Formula : | C17H15NO4 |
M.W : | 297.31 |
SMILES Code : | O=C1NC2=C(OCC3=CC=CC=C3)C=CC(C(C)=O)=C2OC1 |
MDL No. : | MFCD21607217 |
InChI Key : | DKSBVRUAVDKXSO-UHFFFAOYSA-N |
Pubchem ID : | 57988970 |
GHS Pictogram: |
![]() |
Signal Word: | Warning |
Hazard Statements: | H302-H315-H319 |
Precautionary Statements: | P261-P305+P351+P338 |
Num. heavy atoms | 22 |
Num. arom. heavy atoms | 12 |
Fraction Csp3 | 0.18 |
Num. rotatable bonds | 4 |
Num. H-bond acceptors | 4.0 |
Num. H-bond donors | 1.0 |
Molar Refractivity | 84.43 |
TPSA ? Topological Polar Surface Area: Calculated from |
64.63 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
2.25 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
2.02 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
2.08 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
1.26 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
3.29 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
2.18 |
Log S (ESOL):? ESOL: Topological method implemented from |
-3.1 |
Solubility | 0.239 mg/ml ; 0.000803 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (Ali)? Ali: Topological method implemented from |
-3.0 |
Solubility | 0.294 mg/ml ; 0.00099 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-5.62 |
Solubility | 0.000716 mg/ml ; 0.00000241 mol/l |
Class? Solubility class: Log S scale |
Moderately soluble |
GI absorption? Gatrointestinal absorption: according to the white of the BOILED-Egg |
High |
BBB permeant? BBB permeation: according to the yolk of the BOILED-Egg |
Yes |
P-gp substrate? P-glycoprotein substrate: SVM model built on 1033 molecules (training set) |
No |
CYP1A2 inhibitor? Cytochrome P450 1A2 inhibitor: SVM model built on 9145 molecules (training set) |
Yes |
CYP2C19 inhibitor? Cytochrome P450 2C19 inhibitor: SVM model built on 9272 molecules (training set) |
Yes |
CYP2C9 inhibitor? Cytochrome P450 2C9 inhibitor: SVM model built on 5940 molecules (training set) |
No |
CYP2D6 inhibitor? Cytochrome P450 2D6 inhibitor: SVM model built on 3664 molecules (training set) |
Yes |
CYP3A4 inhibitor? Cytochrome P450 3A4 inhibitor: SVM model built on 7518 molecules (training set) |
Yes |
Log Kp (skin permeation)? Skin permeation: QSPR model implemented from |
-6.68 cm/s |
Lipinski? Lipinski (Pfizer) filter: implemented from |
0.0 |
Ghose? Ghose filter: implemented from |
None |
Veber? Veber (GSK) filter: implemented from |
0.0 |
Egan? Egan (Pharmacia) filter: implemented from |
0.0 |
Muegge? Muegge (Bayer) filter: implemented from |
0.0 |
Bioavailability Score? Abbott Bioavailability Score: Probability of F > 10% in rat |
0.55 |
PAINS? Pan Assay Interference Structures: implemented from |
0.0 alert |
Brenk? Structural Alert: implemented from |
0.0 alert: heavy_metal |
Leadlikeness? Leadlikeness: implemented from |
No; 1 violation:MW<0.0 |
Synthetic accessibility? Synthetic accessibility score: from 1 (very easy) to 10 (very difficult) |
2.72 |
* 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 |
---|---|---|
95% | 2-Chloroacetyl chloride (1.77 mL) was added dropwise to a stirred mixture of 1-(3-amino-4-(benzyloxy)-2-hydroxyphenypethanone (5.20 g, 20.2 mmol) and sodium hydrogen carbonate (3.74 g, 44.5 mmol) in DMF (30 mL) and then stirred for a further two hours. Cesium carbonate (7.90 g, 24.2 mmol) was added and the mixture was heated at 100 C. for 20 hours. The mixture was cooled to room temperature, quenched with water (500 mL), extracted with ethyl acetate (2×200 mL), and the combined organic layers washed with water (3×300 mL) and brine. The organic layer was then dried over anhydrous sodium sulfate, filtered and evaporated in vacuo. The solid residue was treated with ether, filtered and the eluent dried to afford the title compound (5.70 g, 19.2 mmol, 95% yield) as a beige solid. MS (ESI+) 298 [M+H]+. | |
86% | Intermediate 148-Acetyl-5-benzyloxy-4Af-benzo[1 ,4]oxazin-3-one; Chloroacetyl chloride (1.25 mL, 15.5 mmol) was added to a stirred mixture of 1-(3-amino-4-benzyloxy-2-hydroxy-phenyl)-ethanone (US2005/0277632) (3.63 g, 14.1 mmol) and NaHCO3 (2.69 g, 32.0 mmol) in dry DMF (20 mL). The reaction mixture was stirred at RT for 2 h. Caesium carbonate (5.53 g, 17.0 mmol) was added and the mixture was heated at 100 0C, protected from moisture, for 2.5 h. The reaction mixture was cooled to RT and poured into water (-300 mL) to afford a turbid, milky solution from which a solid precipitated. The solid was removed by vacuum filtration and taken up in EtOAc by sonication and the aqueous layer was extracted with EtOAc. The combined organic layers were further washed with water, brine, dried (MgSO4), and concentrated in vacuo Xo afford a dark brown solid. Yield: 3.60 g (86%). LC-MS (Method 3): Rt 3.24 min, m/z 298 [M+H]+. | |
Step iv) 8-Acetyl-5-(benzyloxy)-2H-benzo[b][l,4]oxazin-3(4H)-one2-Chloroacetyl chloride (1.771 mL) was added dropwise to a stirred mixture of l-(3- amino-4-(benzyloxy)-2-hydroxyphenyl)ethanone (5.2 g) [Step iii] and sodium hydrogen carbonate (3.74 g) in DMF (30 mL) and then stirred for a further 2 h. Cesium carbonate (7.90 g) was added and heated at 1000C for 20 h. The mixture was cooled to ambient temperature, quenched with water (500 mL), extracted with ethyl acetate (2 x 200 mL), washed with water (3 x 300 mL) and brine, dried over anhydrous sodium sulfate, filtered and evaporated in vacuo. The solid residue was treated with ether, filtered and dried to afford the subtitled compound as a beige solid (5.7 g).1E NMR (399.826 MHz, DMSO) delta 10.33 (s, IH), 7.55 (m, 2H), 7.39 (m, 2H), 7.34 (d, J = 8.8 Hz, IH), 7.33 (m, IH), 6.89 (d, J = 9.2 Hz, IH), 5.27 (s, 2H), 4.67 (s, 2H), 3.32 (s 3H). |
Step iv) 8-Acetyl-5-(benzyloxy)-2H-benzo[b][l,4]oxazin-3(4H)-one 2-Chloroacetyl chloride (1.77 mL) was added dropwise to a stirred mixture of l-(3-amino- 4-(benzyloxy)-2-hydroxyphenyl)ethanone (5.2 g) and sodium hydrogen carbonate (3.74 g) in DMF (30 mL) and then stirred for a further 2 h. Cesium carbonate (7.90 g) was added and heated at 1000C for 20 h. The mixture was cooled to ambient temperature, quenched with water (500 mL), extracted with ethyl acetate (2 x 200 mL), washed with water (3 x 300 mL) and brine, dried over anhydrous sodium sulfate, filtered and evaporated under vacuum. The solid residue was treated with ether, filtered and dried to afford the subtitled compound as a beige solid (5.7 g). <n="34"/>1H NMR (400 MHz, DMSO-d6) delta 10.33 (s, IH), 7.55 (m, 2H), 7.39 (m, 2H), 7.34 (d, J = 8.8 Hz, IH), 7.33 (m, IH), 6.89 (d, J = 9.2 Hz, IH), 5.27 (s, 2H), 4.67 (s, 2H), 3.32 (s, 3H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
94% | With N,N,N-trimethylbenzenemethanaminium dichloroiodate; acetic acid; In dichloromethane; water; at 65℃; for 20h; | Benzyltrimethylammonium dichloroiodate (14.2 g, 40.8 mmol) was added to a stirred solution of <strong>[1035229-32-3]8-acetyl-5-(benzyloxy)-2H-benzo[b][1,4]oxazin-3(4H)-one</strong> (5.50 g, 18.5 mmol) in a mixture of dichloromethane (100 mL), acetic acid (33 mL) and water (5.5 mL). The reaction mixture was stirred at 65 C. for 20 hours. The reaction was then cooled to room temperature, treated with aqueous sodium bisulphate (5.78 g, in 100 mL), and stirred for another 30 minutes. The mixture was diluted with ether (200 mL) and the resulting solid was filtered off, washed with water, then ether, and dried under vacuum at 40 C. to afford the title compound (5.60 g, 17.4 mmol, yield 94% yield) as a yellow solid. MS (ESI+) 332 [M+1-1]+. |
89% | With N,N,N-trimethylbenzenemethanaminium dichloroiodate; acetic acid; In dichloromethane; water; at 65℃; for 18h;Darkness; | Intermediate 15 5-Benzyioxy-8-(2-chloro-acetyl)-4f/-benzo[1 ,4]oxazin-3-one; Benzyltrimethylammonium dichloroiodate (9.27 g, 26.6 mmol) was added to a stirred solution of 8-acetyl-5-benzyloxy-4/-/-benzo[1 ,4]oxazin-3-one (3.60 g, 12.1 mmol) in a mixture of DCM (65 ml_), acetic acid (22 ml_), and water (3.6 mL) that was heated at 65 0C and protected from light, for 18 h. The reaction mixture was cooled to RT and a solution of sodium bisulphite (3.78 g) in water (65 mL) was added and mixed vigorously to form a suspension. After stirring for 0.5 h diethyl ether (150 mL) was added and the solids collected by filtration, washed with water, then ether and dried at 40 0C in vacuo to afford a light brown crystalline solid. Yield: 3.56 g (89%). LC-MS (Method 3): Rt 3.50 min, m/z 332 [M+H]+. |
89% | With N,N,N-trimethylbenzenemethanaminium dichloroiodate; acetic acid; In dichloromethane; water; at 65℃; for 18h; | intermediate 61; <n="105"/>5-Benzyloxy-8-(2-chloro-acetyl)-4H-benzo[1,4]oxazin-3-one; Benzyltrimethylammonium dichloroiodate (9.27 g, 26.6 mmol) was added to a stirred solution of 8-acetyl-5-benzyloxy-4/-/-benzo[1 ,4]oxazin-3-one (3.60 g, 12.1 mmol) in a mixture of DCM (65 ml_), acetic acid (22 ml_), and water (3.6 ml_), which was heated at 65 0C, protected from light, for 18 h. The reaction mixture was cooled to RT and a solution of sodium bisulphite (3.78 g) in water (65 ml_) was added and mixed vigorously to form a suspension. After stirring for 0.5 h diethyl ether (150 ml_) was added and the solids collected by filtration, washed with water, then ether and dried at 40 0C in vacuo to afford a light brown crystalline solid. Yield: 3.56 g (89%).LC-MS (Method 4): Rt 3.50 min, m/z 332 [M+H]+. |
Step v) 5-(Benzyloxy)-8-(2-chloroacetyl)-2H-benzo[b] [1 ,4]oxazin-3(4H)-oneBenzyltrimethylamnionium dichloroiodate (14.17 g) was added to a stirred solution of 8- acetyl-5-(benzyloxy)-2H-benzo[b][l,4]oxazin-3(4H)-one (5.5 g) [Step iv] in a mixture of dichloromethane (100 mL), AcOH (33 mL) and water (5.5 niL) and the reaction mixture stirred at 65 0C for 20 h. The reaction was cooled to ambient temperature, treated with aqueous sodium bisulphite (5.78 g in 100 mL) and stirred for a further 30 minutes. The mixture was diluted with diethylether (200 mL) and the resulting solid filtered off, washed with water and furtehr diethylether, and dried under vacuum at 40 0C to afford the subtitled compound as a light brown solid (5.6 g).1U NMR (299.947 MHz, DMSO) delta 10.41 (s, IH), 7.55 (m, 2H), 7.44 (d, J = 9.4 Hz, IH), 7.39 (m, 2H), 7.32 (m, IH), 6.95 (d, J = 9.4 Hz, IH), 5.30 (s, 2H), 4.96 (s, 2H), 4.69 (s, 2H). | ||
With N,N,N-trimethylbenzenemethanaminium dichloroiodate; In ethanol; for 1h;Reflux;Product distribution / selectivity; | Step v) 5-(Benzyloxy)-8-(2-chloroacetyl)-2H-benzo[b] [ 1 ,4]oxazin-3(4H)-one The solvent can be changed from dichloromethane, acetic acid and water to ethanol/water leading to the product precipitating directly rather then needing an extractive work-up. With this procedure there is no need to use an aqueous sodium bisulfite wash. For example:To the product from Preparation 2 Step iv) (23 g) and benzyltrimethylammonium dichloroiodate (53.85 g) was added ethanol (230 mL). The mixture was heated at reflux for 1 h then cooled to 500C and water (230 mL) added. The mixture was cooled to 200C and stirred for at least 1 h. The suspension was filtered, washed with water (46 mL) and then ethanol (69 mL). To the damp solid was added ethyl acetate (460 mL). The mixture was heated at reflux for 1 h then cooled to 200C and stirred for at least 1 h. The suspension was filtered and the residue was washed with ethyl acetate (115 mL) and dried under vacuum to yield the sub-titled compound (61.0 g). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With caesium carbonate; In N,N-dimethyl-formamide; at 100℃; for 2.5h; | Intermediate 60; 8-Acetyl-5-benzyloxy-4W-benzo[1 ,4]oxazin-3-one; Chloroacetyl chloride (1.25 ml_, 15.5 mmol) was added to a stirred mixture of 1-(3-amino-4-benzyloxy-2-hydroxy-phenyl)-ethanone (3.63 g, 14.1 mmol) andNaHCO3 (2.69 g, 32.0 mmol) in dry DMF (20 ml_). The reaction mixture was stirred for 2 h at RT. Caesium carbonate (5.53 g, 17.0 mmol) was added and the mixture was heated at 100 0C, protected from moisture, for 2.5 h. The reaction mixture was cooled to RT and poured into water (-300 ml_) to afford a turbid, milky solution from which a solid precipitated. The solid was removed by vacuum filtration and taken up in EtOAc by sonication and the aqueous layer was extracted with EtOAc. The combined organic layers were further washed with water, brine, dried (MgSO4), and concentrated in vacuo to afford a dark brown, fine solid.Yield: 3.60 g (86%). LC-MS (Method 4): Rt 3.24 min, m/z 298 [M+H]+. |
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