Structure of 1885-13-8
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CAS No. : | 1885-13-8 |
Formula : | C9H8O5 |
M.W : | 196.16 |
SMILES Code : | C1=C(C(=CC=C1OC)C(=O)O)C(=O)O |
MDL No. : | MFCD00094739 |
InChI Key : | JKZSIEDAEHZAHQ-UHFFFAOYSA-N |
Pubchem ID : | 74665 |
GHS Pictogram: |
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Signal Word: | Warning |
Hazard Statements: | H302-H315-H319-H335 |
Precautionary Statements: | P261-P305+P351+P338 |
Num. heavy atoms | 14 |
Num. arom. heavy atoms | 6 |
Fraction Csp3 | 0.11 |
Num. rotatable bonds | 3 |
Num. H-bond acceptors | 5.0 |
Num. H-bond donors | 2.0 |
Molar Refractivity | 46.85 |
TPSA ? Topological Polar Surface Area: Calculated from |
83.83 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
0.9 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
1.17 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
1.09 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
0.95 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
0.65 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
0.95 |
Log S (ESOL):? ESOL: Topological method implemented from |
-1.91 |
Solubility | 2.4 mg/ml ; 0.0122 mol/l |
Class? Solubility class: Log S scale |
Very soluble |
Log S (Ali)? Ali: Topological method implemented from |
-2.53 |
Solubility | 0.585 mg/ml ; 0.00298 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-1.28 |
Solubility | 10.4 mg/ml ; 0.0528 mol/l |
Class? Solubility class: Log S scale |
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 |
No |
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) |
No |
CYP2C19 inhibitor? Cytochrome P450 2C19 inhibitor: SVM model built on 9272 molecules (training set) |
No |
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) |
No |
CYP3A4 inhibitor? Cytochrome P450 3A4 inhibitor: SVM model built on 7518 molecules (training set) |
No |
Log Kp (skin permeation)? Skin permeation: QSPR model implemented from |
-6.67 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 |
1.0 |
Bioavailability Score? Abbott Bioavailability Score: Probability of F > 10% in rat |
0.56 |
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<1.0 |
Synthetic accessibility? Synthetic accessibility score: from 1 (very easy) to 10 (very difficult) |
1.59 |
* 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 |
---|---|---|
99% | With acetic anhydride; In tetrahydrofuran; for 4h;Heating / reflux; | Acetic anhydride (40 ml) was added to a mixture of <strong>[1885-13-8]4-methoxyphthalic acid</strong> (30.8 g, 0.16 mol) in anhydrous tetrahydrofuran (150 ml) and the mixture was strirred and held at reflux for 4 hours. Upon cooling to room temperature the solvent was removed in vacuo to afford 4-methoxyphthalic anhydride (27.8 g, 99%) as an off white solid. 1H NMR (DMSO-d6) 8.02 (1 H, d), 7.59 (1 H, d), 7.49 (1 H, dd), 3.97 (3H, s). MS: [M+H]+ 179. |
99% | With acetic anhydride; In tetrahydrofuran; for 4h;Heating / reflux; | Acetic anhydride (40 ml) was added to a mixture of <strong>[1885-13-8]4-methoxyphthalic acid</strong> (30.8 g, 0.16 mol) in anhydrous tetrahydrofuran (150 ml) and the mixture was strirred and held at reflux for 4 hours. <n="227"/>Upon cooling to room temperature the solvent was removed in vacuo to afford 4-methoxyphthalic anhydride (27.8 g, 99%) as an off white solid. 1H NMR (DMSOd6) 8.02 (1 H1 d), 7.59 (1 H, d), 7.49 (1H, dd), 3.97 (3H1 s). MS: [M+H]+ 179. |
99% | With acetic anhydride; In tetrahydrofuran; for 4h;Heating / reflux; | Acetic anhydride (40 ml) was added to a mixture of <strong>[1885-13-8]4-methoxyphthalic acid</strong> (30.8 g, 0.16 mol) in anhydrous tetrahydrofuran (150 ml) and the mixture was strirred and held at reflux for 4 hours. Upon cooling to room temperature the solvent was removed in vacuo to afford 4-methoxyphthalic anhydride (27.8 g, 99%) as an off white solid. 1H NMR (DMSO-d6) 8.02 (1 H, d), 7.59 (1 H, d), 7.49 (1 H, dd), 3.97 (3H, s). MS: [M+H]+ 179. |
99% | With acetic anhydride; In tetrahydrofuran; for 4h;Heating / reflux; | Acetic anhydride (40 ml) was added to a mixture of <strong>[1885-13-8]4-methoxyphthalic acid</strong> (30.8 g, 0.16 mol) in anhydrous tetrahydrofuran (150 ml) and the mixture was strirred and held at reflux for 4 hours. Upon cooling to room temperature the solvent was removed in vacuo to afford 4-methoxyphthalic anhydride (27.8 g, 99%) as an off white solid. 1H NMR (DMSO-d6) 8.02 (1 H, d), 7.59 (1 H, d), 7.49 (1 H1 dd), 3.97 (3H, s). MS: [M+H]+ 179. |
99% | With acetic anhydride; In tetrahydrofuran; for 4h;Reflux; | Acetic anhydride (40 ml) was added to a mixture of <strong>[1885-13-8]4-methoxyphthalic acid</strong> (30.8 g, 0.16 mol) in anhydrous tetrahydrofuran (150 ml) and the mixture was stirred and held at reflux for 4 hours. Upon cooling to room temperature the solvent was removed in vacuo to afford 4-methoxyphthalic anhydride (27.8 g, 99%) as an off white solid. 1H NMR (DMSO-d6) 8.02 (1H, d), 7.59 (1H, d), 7.49 (1H, dd), 3.97 (3H, s). MS: [M+H]+ 179. |
98% | In acetic anhydride; for 18h;Reflux; | Step 4: Preparation of 5-methoxyisobenzofuran-1,3-dione The compound prepared in step 3 above (0.23 g, 1.2 mmol) was dissolved in 4 ml of acetic anhydride. The prepared solution was heated under reflux for 18 hours. The temperature of the solution was cooled down to room temperature, followed by concentration by rotary evaporation. The obtained residue was purified by flash column chromatography. As a result, a target compound was obtained (0.21 g, 98%). 1H NMR (DMSO-d6, 500 MHz) delta 7.99 (d, J=8.4 Hz, 1H), 7.58 (d, J=2.3 Hz, 1H), 7.48 (dd, J=8.5, 2.3 Hz, 1H), 3.97 (s, 3H). 13C NMR (DMSO-d6, 125 MHz) delta 165.7, 163.1, 162.7, 134.0, 127.2, 122.9, 122.7, 109.3, 56.7. |
78% | With 1,4-diaza-bicyclo[2.2.2]octane; thionyl chloride; In dichloromethane; at 0 - 20℃; for 0.833333h; | 1 ,4-Diazabicyclic[2,2,2]octane (336 mg, 3 mmol) was dissolved in anhydrous dichloromethane (3 ml_) and then stirred for five minutes while slowly adding distilled thionyl chloride (0.2 ml_, 3 mmol) at O0C. And then,<strong>[1885-13-8]4-methoxyphthalic acid</strong> (200 mg, 1 mmol) was slowly added dropwise at room temperature for 50 minutes. 10% sodium bicarbonate was added to neutralize the reaction solution and the resultant was extracted with dichloromethane.Organic layers were dried with anhydrous sodium sulfate and filtered, and the filtrate was distilled under reduced pressure, separated and then purified by a column chromatography on silica gel (hexane/ethyl acetate=3:1), to obtain139 mg of the desired compound (yield 78%).1H NMR (300 MHz, CDCI3) delta 7.92 (d, J=5.6 Hz, 1 H) 7.43 (d, J=2.9, 1 H),7.36 (dd, J=11.2, 3.0 Hz, 1 H), 3.99 (s, 1 H). 13C NMR (75 Hz, CDCI3) delta 166.17, 163.00, 162.43, 134.14, 127.28,123.22, 123.98, 108.89, 56.44. |
58% | With 1,4-diaza-bicyclo[2.2.2]octane; thionyl chloride; In dichloromethane; at 20℃; for 2h; | To a mixture of <strong>[1885-13-8]4-methoxy-phthalic acid</strong> (1.8 g, 9.18 mmol), thionyl chloride (1.4 mL, 19.79 mmol) in CH2C12 (15 mL) is added DABCO (1.1 g, 9.81 mmol). The reaction mixture is stirred at room temperature for 2 hours. The reaction mixture is diluted with CH2C12 (100 mL), washed with H20 (75 mL x2), dried with Na2S04 and filtered. The filtrate is concentrated under reduced pressure to afford 5-methoxy-isobenzofuran-l,3- dione (950 mg, 58%). |
With acetic anhydride; In tetrahydrofuran; for 4h;Reflux; | The solution of <strong>[1885-13-8]4-methoxyphthalic acid</strong> (16 mmol) and Ac2O (0.4 mL) in 2 mL THF was refluxedfor 4 h. Once completed, the solvent was evaporated and the intermediate 4-methyl phthalic anhydridewas afforded. Then it was mixed with aniline (0.16 mL) in 5 mL acetic acid under reflux to afford thefinal product quantitively [27]. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
99% | A solution of dimethyl 4-methoxyphthalate (36.75 g, 0.16 mol) in methanol (100 ml) was treated with a solution of potassium hydroxide (28.0 g, 0.5 mol) in water (50 ml) and the mixture was stirred and held at reflux for 4 hours. Upon cooling to room temperature the methanol was removed in vacuo and the mixture acidified to pH 2 or below by the addition of 5M hydrochloric acid. The solid material was filtered off, washed with water and sucked dry under reduced pressure overnight to afford 4-methoxyphthalic acid (31.8 g, 99%) as an off white solid. 1H NMR (DMSOd6) 12.90 (2H, br s), 7.74 (1H, d), 7.12-7.05 (2H1 m), 3.84 (3H, s). MS: [M+H]+ 197. | |
99% | A solution of dimethyl 4-methoxyphthalate (36.75 g, 0.16 mol) in methanol (100 ml) was treated with a solution of potassium hydroxide (28.0 g, 0.5 mol) in water (50 ml) and the mixture was stirred and held at reflux for 4 hours. Upon cooling to room temperature the methanol was removed in vacuo and the mixture acidified to pH 2 or below by the addition of 5M hydrochloric acid. The solid material was filtered off, washed with water and sucked dry under reduced pressure overnight to afford 4-methoxyphthalic acid (31.8 g, 99%) as an off white solid. 1H NMR (DMSO-d6) 12.90 (2H, br s), 7.74 (1H, d), 7.12-7.05 (2H, m), 3.84 (3H, s). MS: [M+H]+ 197. | |
99% | A solution of dimethyl 4-methoxyphthalate (36.75 g, 0.16 mol) in methanol (100 ml) was treated with a solution of potassium hydroxide (28.0 g, 0.5 mol) in water (50 ml) and the mixture was stirred and held at reflux for 4 hours. Upon cooling to room temperature the methanol was removed in vacuo and the mixture acidified to pH 2 or below by the addition of 5M hydrochloric acid. The solid material was filtered off, washed with water and sucked dry under reduced pressure overnight to afford 4-methoxyphthalic acid (31.8 g, 99%) as an off white solid. 1H NMR (DMSOd6) 12.90 (2H, br s), 7.74 (1H1 d), 7.12-7.05 (2H, m), 3.84 (3H, s). MS: [M+H]+ 197. |
99% | A solution of dimethyl 4-methoxyphthalate (36.75 g, 0.16 mol) in methanol (100 ml) was treated with a solution of potassium hydroxide (28.0 g, 0.5 mol) in water (50 ml) and the mixture was stirred and held at reflux for 4 hours. Upon cooling to room temperature the methanol was removed in vacuo and the mixture acidified to pH 2 or below by the addition of 5M hydrochloric acid. The solid material was filtered off, washed with water and sucked dry under reduced pressure overnight to afford 4-methoxyphthalic acid (31.8 g, 99%) as an off white solid. 1H NMR (DMSOd6) 12.90 (2H, br s), 7.74 (1 H, d), 7.12-7.05 (2H, m), 3.84 (3H, s). MS: [M+H]+ 197. | |
99% | With water; potassium hydroxide; In methanol; for 4h;Reflux; | A solution of dimethyl 4-methoxyphthalate (36.75 g, 0.16 mol) in methanol (100 ml) was treated with a solution of potassium hydroxide (28.0 g, 0.5 mol) in water (50 ml) and the mixture was stirred and held at reflux for 4 hours. Upon cooling to room temperature the methanol was removed in vacuo and the mixture acidified to pH 2 or below by the addition of 5M hydrochloric acid. The solid material was filtered off, washed with water and sucked dry under reduced pressure overnight to afford 4-methoxyphthalic acid (31.8 g, 99%) as an off white solid. 1H NMR (DMSO-d6) 12.90 (2H, br s), 7.74 (1H, d), 7.12-7.05 (2H, m), 3.84 (3H, s). MS: [M+H]+ 197. |
With sodium hydroxide; In water; for 1h;Heating / reflux; | A solution of dimethyl 4-methoxyphthalate (20 g, 89 [MMOL)] was heated at reflux in 10% aqueous sodium hydroxide (85 mL) for 1 hour. The mixture was cooled to room temperature then acidified to pH 1 using concentrated hydrochloric acid. The precipitate that formed was filtered off, washed with water and dried under vacuum to afford the title compound D22 (13.61 g). MH-195.'H NMR [8] (DMSO-d6) 3.83 (3H, s), 7.05-7. 10 (3H, m), 7.72 [(1H,] d). | |
Example 3 5-(5-Methoxy-1,3-dioxo-1,3-dihydro-isoindol-2-ylmethyl)-2-(oxalyl-amino)-4,7-dihydro-5H-thieno[2,3-c]pyran-3-carboxylic acid; To a solution of 4-hydroxyphthalic acid (0.25 g, 1.37 mmol) in anhydrous N,N-dimethylformamide (3 ml) under nitrogen was added sodium hydride (0.22 g, 5.48 mmol). The solution was stirred for 5 minutes and then methyl iodide (0.68 ml) was added and continued stirring for 3 hours. Several drops of water were added to quench the reaction and the mixture was concentrated in vacuo. The crude material was partitioned between ethyl acetate (40 ml) and water (10 ml). The layers were separated and the organic layer washed with brine (2×10 ml), dried (Na2SO4), filtered and the solvent evaporated in vacuo. The resulting oil was dissolved in methanol (8 ml) and 1N sodium hydroxide (4 ml) was added. The reaction was stirred at ambient temperature for 24 h., after which LC-MS indicated only partial hydrolysis. The material was reconstituted in methanol (5 ml) and treated with of sodium hydroxide (0.12 g, 3.0 mmol) dissolved in water (1 ml). The reaction mixture was stirred for 48 h., at which time a precipitate had formed. The mixture was acidified with 6N hydrochloric acid until pH=1, causing the solution to become homogeneous. The reaction was concentrated in vacuo and the residue partitioned between ethyl acetate (30 ml) and 0.5N hydrochloric acid (10 ml). The layers were separated and the organic layer concentrated in vacuo to give 100 mg (51%) of 4-methoxy-phthalic acid as a solid.1H NMR (300 MHz, CD3OD) delta 7.83 (d; J=8, 1H), 7.10-7.06 (m, 2H), 3.87 (s, 3H).LC-MS: Rt=1.45 min, [M+H]+=197.1A solution of 4-methoxy-phthalic acid (0.10 g, 0.51 mmol), 1-hydroxy-benzotriazole (0.15 g, 1.1 mmol), 1-(3-dimethylaminopropyl)-3-ethyl-carbodiimide hydrochloride (0.22 g, 1.1 mmol), and triethylamine (0.35 ml, 2.5 mmol) was prepared in distilled acetonitrile (4 ml) under nitrogen. 2-Amino-5-aminomethyl-4,7-dihydro-5H-thieno-[2,3-c]pyran-3-carboxylic acid tert-butyl ester (0.11 g, 0.39 mmol) was added in small portions and the reaction was stirred at ambient temperature for 18 h., and then concentrated in vacuo. The crude mixture was diluted in ethyl acetate (30 ml) and washed with 1% hydrochloric acid (5 ml), saturated sodium bicarbonate (5 ml), and brine (5 ml). The organic layer was dried (Na2SO4), filtered, and the solvent evaporated in vacuo. The crude material was purified by silica gel chromatography using a 10% mixture of ethyl acetate/dichloromethane as eluant. Pure fractions were collected and the solvent evaporated in vacuo to give 54 mg (31%) of 2-amino-5-(5-methoxy-1,3-dioxo-1,3-dihydro-isoindol-2-ylmethyl)-4,7-dihydro-5H-thieno-[2,3-c]pyran-3-carboxylic acid tert-butyl ester.1H NMR (300 MHz, CDCl3) delta 7.76 (d, J=8, 1H), 7.32 (s, 1H), 7.14 (d, J=8, 1H), 4.62-4.48 (m, 2H), 4.00-3.72 (m, 3H), 3.91 (s, 3H), 2.86 (d, J=17, 1H), 2.55 (dd, J=17, 10, 1H), 1.49 (s, 9H).To a solution of the above 2-amino-5-(5-methoxy-1,3-dioxo-1,3-dihydro-isoindol-2-ylmethyl)-4,7-dihydro-5H-thieno-[2,3-c]pyran-3-carboxylic acid tert-butyl ester (54 mg, 0.12 mmol) in distilled dichloromethane (3 ml) under nitrogen was added midazol-1-yl-oxo-acetic acid tert-butyl ester (0.25 g, 0.36 mmol) and triethylamine (50 mul, 0.36 mmol). The reaction was stirred for 4 h., concentrated in vacuo and the residue reconstituted in ethyl acetate (20 ml). The organic layer was washed with 1% hydrochloric acid (2×5 ml), saturated sodium bicarbonate (5 ml), and brine (5 ml). The organic phase was dried (Na2SO4), filtered, and the solvent evaporated in vacuo. The crude material was purified by silica gel chromatography using a 5% mixture of ethyl acetate/dichloromethane as eluant. Pure fractions were collected and the solvent evaporated in vacuo to give 56 mg (81%) of 2-(tert-butoxyoxalyl-amino)-5-(5-methoxy-1,3-dioxo-1,3-dihydro-isoindol-2-ylmethyl)-4,7-dihydro-5H-thieno-[2,3-c]pyran-3-carboxylic acid tert-butyl ester.1H NMR (300 MHz, CDCl3) delta 12.48 (s, 1H), 7.75 (d, J=8, 1H), 7.32 (d, J=2, 1H), 7.15 (dd, J=8, 2, 1H), 4.78 (d, J=15, 1H), 4.65 (d, J=15, 1H), 4.03-3.75 (m, 3H), 3.91 (s, 3H), 2.95 (d, J=17, 1H), 2.66 (dd, J=17, 9, 1H), 1.58 (s, 9H), 1.54 (s, 9H).APCI-MS: [M+H]+=574The above 2-(tert-butoxyoxalyl-amino)-5-(5-methoxy-1,3-dioxo-1,3-dihydro-isoindol-2-ylmethyl)-4,7-dihydro-5H-thieno-[2,3-c]pyran-3-carboxylic acid tert-butyl ester (55 mg, 0.096 mmol) was dissolved in a solution of 50% trifluoroacetic acid/dichloromethane (4 ml). The reaction was stirred at ambient temperature for 7 h., concentrated in vacuo and evaporated in vacuo from dichloromethane (3×10 ml). The resulting precipitate was washed with dichloromethane and dried in vacuo to give 17 mg (40%) of the title compound as a solid.1H NMR (300 MHz, DMSO-d6) delta 12.32 (s, 1H), 7.81 (d, J=8, 1H), 7.40 (d, J=2, 1H), 7.31 (dd, J=8, 2, 1H), 4.75 (d, J=15, 1H), 4.56 (d, J=15, 1H), 3.92 (s, 3H), 3.91-3.69 (m, 3H), 2.98 (d, J=17, 1H), 2.57 (dd, J=17, 9, 1H).AP... | ||
With water; sodium hydroxide; In acetone; at 20℃; | The 3 ml of acetone containing the compound prepared in step 2 (0.31 g, 1.4 mmol) dissolved therein was treated with 2 ml of water containing NaOH (0.34 g, 8.4 mmol) dissolved therein, followed by stirring at room temperature for overnight. After evaporating acetone, the reaction mixture was acidized with 6 M HCl to adjust to pH 2, followed by extraction with ethyl acetate. The combined organic layer was dried over MgSO4, and the solvent was eliminated under reduced pressure. As a result, a crude target compound was obtained (0.27 g, 97%). 1H NMR (DMSO-d6, 500 MHz) delta 12.94 (s, 2H), 7.74 (d, J=8.5 Hz, 1H), 7.07 (dd, J=8.5, 2.7 Hz, 1H), 7.05 (d, J=2.5 Hz, 1H), 3.83 (s, 3H). 13C NMR (DMSO-d6, 125 MHz) delta 169.3, 167.4, 161.4, 137.1, 131.3, 122.7, 115.1, 113.0, 55.7. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With urea; In ethylene glycol; at 180℃; for 3h; | A mixture of D22 (13.61 g, 69 [MMOL)] and urea (8.3 g, 139 [MMOL)] were heated together in ethylene glycol (150 mL) at [180C] for 3 hours. The mixture was cooled to room temperature and the precipitate that formed filtered off, washed with water then dried to afford the title compound D23 (6.78 g). MH-176.'H NMR 8 (DMSO-d6) 3.92 (3H, s), 7.27- 7.38 (2H, m), 7.71-7. 76 [(1H,] d). |
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