Structure of 499-49-0
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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. : | 499-49-0 |
Formula : | C9H8O4 |
M.W : | 180.16 |
SMILES Code : | C1=C(C=C(C)C=C1C(O)=O)C(O)=O |
MDL No. : | MFCD00013986 |
InChI Key : | PMZBHPUNQNKBOA-UHFFFAOYSA-N |
Pubchem ID : | 68137 |
GHS Pictogram: |
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Signal Word: | Warning |
Hazard Statements: | H315-H319-H335 |
Precautionary Statements: | P261-P305+P351+P338 |
Num. heavy atoms | 13 |
Num. arom. heavy atoms | 6 |
Fraction Csp3 | 0.11 |
Num. rotatable bonds | 2 |
Num. H-bond acceptors | 4.0 |
Num. H-bond donors | 2.0 |
Molar Refractivity | 45.33 |
TPSA ? Topological Polar Surface Area: Calculated from |
74.6 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
1.03 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
1.34 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
1.39 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
1.51 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
1.09 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
1.27 |
Log S (ESOL):? ESOL: Topological method implemented from |
-2.01 |
Solubility | 1.76 mg/ml ; 0.00976 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (Ali)? Ali: Topological method implemented from |
-2.51 |
Solubility | 0.559 mg/ml ; 0.0031 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-1.53 |
Solubility | 5.3 mg/ml ; 0.0294 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 |
-6.45 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) |
1.15 |
* 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 |
---|---|---|
With thionyl chloride; at 50℃; for 18h; | Step 1. N,N'-dimethoxy-N,N',5-trimethylisophthalamide (4a). To a 200 mL round bottomed flask with a stirring bar, reflux condenser and a drying tube was added <strong>[499-49-0]5-methylisophthalic acid</strong> (10.00 g, 55.51 mmol) and thionyl chloride (50.0 mL, 685.47 mmol). This mixture was heated at 50° C. 18h. The excess thionyl chloride was removed in vacuo to give solid crude diacid chloride. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
71% | With 3-[(ethylimino)methylene]-amino}-N,N,N-trimethyl-1-propanaminium iodide; benzotriazol-1-ol; N-ethyl-N,N-diisopropylamine; In dichloromethane; at 20℃; for 24h;Product distribution / selectivity; | Preparation 1 To a RT solution of <strong>[499-49-0]5-methylisophthalic acid</strong> (6.68 g, 37.1 mmol) and DIEA (19.7 ml, 14.4 g, 111 mmol) in CH2CI2 (74 ml) were added SEQUENTIALLY DI-N-PROPYL- amine (5.1 MI, 3.75 g, 37.1 mmol), HOBt (5.01 g, 37.1 mmol) in two portions, and EDCI (7.11 g, 37.1 mmol) in four portions. The reaction mixture was stirred for 24 h, then diluted with 1 N HCI. The mixture was stirred vigorously for 15 min, and the copious solid that precipitated was removed by filtration. The filtrate was diluted with water, and the aqueous phase was adjusted to PH-1. The phases were separated and the aqueous layer extracted twice with CH2CI2. The combined organics were dried (MGS04), filtered, and concentrated. This crude residue was purified by column chromatography (silica, 0No.100percent EtOAc/hexanes) to give a semi-solid that was further recrystallized from 15percent EtOAc/hexanes to give the product (4.5 g). Additional product (2.4 g) was obtained by a second column chromatography of the crystallization mother liquor. These two samples were combined (6.9 g total mass, 26.2 mmol, 71 percent). LCMS (Conditions A): TR = 3.9 min; (M+H) + = 264. |
40% | 5-Methylisophtalic acid (100-150 mg, 0.55-0.83 mmol) was dissolved in DMF (3 niL), cooled to 0 0C and DIPEA (1 equiv) was added and the mixture was stirred until a clear solution was achieved. PyBOP (1 equiv) was added, and the stirring was continued for 30 min at 0 0C. A solution of amine (dipropylamine, butylmethylamine and i?-(methoxymethyl)pyrrolidine for A- 17, A-18 and A-19 respectively, 1.1 equiv) and DIPEA (1 equiv) in DMF (3 mL) was added dropwise to the activated ester solution and the reaction was stirred for 1 h. Et2O (30 mL) was added followed by 1 M NaOH (10 mL) and the phases were separated. The organic layer was extracted with 2 X 10 mL 1 M NaOH. The combined aqueous phases were acidified to pH 1 with 3 M HCl and extracted with 3 X 10 mL DCM. The combined organic layers were concentrated in vacuo and the product was purified by gradient column chromatography (1 :1 hexanes/ EtOAc - EtOAc with 1percent AcOH throughout. This gave the title compounds with some minor contaminants and the products were used as such without further purification. A-17: 40percent, m/z ES+ 264.2 [M+H]+; A-18: 38percent m/z ES+ 250.2 [M+H]+; A-19: 42percent, m/z ES+ 278.2 [M+H]+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
84% | With 1,8-diazabicyclo[5.4.0]undec-7-ene; In N,N-dimethyl-formamide; tert-butyl alcohol; | 3,5-Dicarboxybenzyl Methanethiosulfonate (1c). 1,1'-Carbonyldiimidazole (6.67 g, 0.0411 mol) was added to a solution of <strong>[499-49-0]toluene-3,5-dicarboxylic acid</strong> (2) (3.364 g, 0.0187 mol) in DMF (30 mL) and the resulting mixture stirred at 40° C. under N2. After 1.5 h DBU (6.15 mIL, 0.041 mol) and t-BuOH (7.7 mL, 0.0822 mol) were added. After 24 h the solution was cooled, ether (150 mL) added and the mixture acidified (HCl (aq.), 1.5 M). The ethereal layer was separated and the aqueous layer further extracted (ether, 150 mL). The organic fractions were combined, washed with water and 10percent K2CO3 (aq.), dried (MgSO4), filtered and the solvent removed. The residue was purified by flash chromatography (EtOAc:hexane, 1:50) to afford a colorless oil which solidified upon standing to give di-tert-butyl toluene-3,5-dicarboxylate (4.58 g, 84percent) as a white solid; mp 86.5-87.5° C. (hexane); IR (film) 1712 cm-1 (C=O), 1606, 1476 cm-1 (Ar C=C); 1H NMR (CDCl3) delta 1.60 (s, 18H, C(CH3)3), 2.43 (s, 3H, CH3), 7.95 (br s, 2H, H-2, H-6), 8.38 (br s, 1H, H-4); 13C NMR (CDCl3) delta 21.4 (CH3), 28.2 (C(H3)3), 81.4 ((CH3)3), 127.7, 132.1, 133.7, 138.1 (Ar), 165.2 (COO). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
91% | With sulfuric acid;Inert atmosphere; Reflux; | A 100 mL round bottom flask was charged with <strong>[499-49-0]5-methylisophthalic acid</strong> (Aldrich, 2.0 g, 11.1 mmol, 1 eq) and a stir bar. A reflux condenser was attached, and the system was evacuated and back-filled with Ar (x3). Anhydrous MeOH (25 mL) was added with stirring. Concentrated H2504 (1.8 mL, 3.27 g, 33.3 mmol, 3 eq) was added dropwise. The reaction was heated to reflux overnight. After cooling to room temperature the volatiles were removed via rotary evaporation. The resulting solid was treated cautiously with NaHCO3 (aq, saturated). The solids were collected via vacuum filtration. The filter cake was rinsed with water (x2) and dried under vacuum. 2.11 g (10.1 mmol, 91% yield) of was collected as a pale yellow solid. |
90.2% | With sulfuric acid; at -15℃; for 14h;Reflux; | 50 g of methyl isophthalic acid,100mL methanol,The catalytic amount of concentrated sulfuric acid was added 250mL single-necked round-bottomed flask,Heat to reflux for 12h. Approximately 50 mL of methanol was distilled off under reduced pressure,The remaining reaction mixture was allowed to stand at -15 C for 2 h,A large number of white precipitate precipitation.The cold mixture was filtered,Methanol wash,Drying gave 52.11 g of a white solid (yield 90.2%),spare |
76.9% | With sulfuric acid; at 20℃; for 12h;Reflux; | To a stirred solution of 5-methy isophthalic acid (10 g, 0.056 mol) in methanol (120 ml) was added dropwise sulfuric acid (98 %, 3 ml) at room temperature and was refluxed for 12 hrs. The reaction mixture was cooled and neutralized with saturated aqueous NaHCO3 to pH = 7~8. The resulting precipitate was collected by filtration and washed with saturated aqueous NaCl (30 ml × 2) and distilled water (30 ml × 2). The filter cake was dried in vacuum to give the compound 2f (8.89 g, 76.9 %, Mp: 91-93 ºC). 1H NMR (500 MHz, CDCl3) delta 8.49 (s, 1H); 8.05 (s, 2H); 3.94 (s, 6H); 2.46 (s, 3H). |
60% | With sulfuric acid; at 80℃; for 10h; | step 1: 10 mmol of <strong>[499-49-0]5-methylisophthalic acid</strong> was dissolved in 250 ml of anhydrous methanol, and 10 ml of concentrated sulfuric acid was added thereto, and refluxed at 80 C for 10 hours, then cooled to room temperature, and the reaction liquid was concentrated to obtain a concentrated product; The concentrated product was dissolved in water, then extracted with anhydrous ethyl ether, and then washed with saturated sodium hydrogencarbonate to neutral, dried over anhydrous sodium sulfate overnight, filtered and then filtrate was concentrated to dryness to give Dimethyl 5-methylisophthalate, the yield is 60%; |
With sulfuric acid; at 80℃; for 10h; | Dissolve 0.07-0.10moL of <strong>[499-49-0]5-methylisophthalic acid</strong> in 150mL of anhydrous methanol, 6mL-9mL of concentrated sulfuric acid was added, and refluxed at constant temperature of 80C for 10h. After spontaneous cooling, rotary evaporation of the reaction mixture and then dissolve with water. Anhydrous ether extraction, and then washed with saturated sodium bicarbonate until neutral, dried over anhydrous sodium sulfate overnight, the filtrate was rotary evaporated to give a white product dimethyl 5-methyl isophthalate | |
With sulfuric acid; at 80℃; for 12h; | Referring to FIG. 1, <strong>[499-49-0]5-methylisophthalic acid</strong> (18 g, 0.1 mol) was added to methanol (400 ml), and then sulfuric acid (8 mL) was added dropwise. Reflux in an oil bath at 80 C for 12 h and cool to room temperature. The pH of the solution was adjusted between 7-8 with saturated NaHCO3. The obtained white solid dimethyl 5-methylisophthalate was separated by filtration and dried. |
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