Structure of 6825-71-4
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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. : | 6825-71-4 |
Formula : | C6H10N4O2 |
M.W : | 170.17 |
SMILES Code : | O=C(C1=C(N)NN=C1N)OCC |
MDL No. : | MFCD04070845 |
InChI Key : | HRAWNPOJGRIJSB-UHFFFAOYSA-N |
Pubchem ID : | 4126248 |
GHS Pictogram: |
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Signal Word: | Warning |
Hazard Statements: | H302-H315-H319-H335 |
Precautionary Statements: | P261-P305+P351+P338 |
Num. heavy atoms | 12 |
Num. arom. heavy atoms | 5 |
Fraction Csp3 | 0.33 |
Num. rotatable bonds | 3 |
Num. H-bond acceptors | 3.0 |
Num. H-bond donors | 3.0 |
Molar Refractivity | 43.48 |
TPSA ? Topological Polar Surface Area: Calculated from |
107.02 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
0.87 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
0.29 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
-0.23 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
-0.31 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
-0.29 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
0.07 |
Log S (ESOL):? ESOL: Topological method implemented from |
-1.19 |
Solubility | 11.0 mg/ml ; 0.0649 mol/l |
Class? Solubility class: Log S scale |
Very soluble |
Log S (Ali)? Ali: Topological method implemented from |
-2.1 |
Solubility | 1.35 mg/ml ; 0.00795 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-0.99 |
Solubility | 17.3 mg/ml ; 0.102 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 |
-7.13 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 |
0.55 |
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<1.0 |
Synthetic accessibility? Synthetic accessibility score: from 1 (very easy) to 10 (very difficult) |
1.83 |
* 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 |
---|---|---|
58.1% | With acetic acid; at 100℃; for 14.0h; | To a solution of ethyl 3,5-diamino-lH-pyrazole-4-carboxylate (5.00 g, 29.38 mmol) in DMF (80 mL) were added 1 , 1 ,3,3-tetramethoxypropane (14.50 mL, 88.15 mmol) and AcOH (0.34 mL, 5.88 mmol). The reaction mixture was stirred at 100 C for 14 h, and then concentrated in vacuo. The residue was partitioned between DCM (50 mL) and water (50 mL). The organic phase was separated and the aqueous phase was extracted with DCM (100 mL x 3). The combined organic phases were washed with brine (100 mL), dried over anhydrous Na2S04, filtered and concentrated in vacuo. The residue was purified by a silica gel column chromatography (a solution of NH3in MeOH (7 M)/DCM (v/v) =1/100) to give the title compound as a pale yellow solid (3.52 g, 58.1%).MS (ESI, pos. ion) m/z: 207.1 [M+H]+; H NMR (400 MHz, CDC1 ): delta (ppm) 8.60 (dd, J= 4.40 Hz, 1.76 Hz, 1H), 8.46 (dd, J = 6.76 Hz, 1.76 Hz, 1H), 6.86 (dd, J = 6.72 Hz, 4.40 Hz, 1H), 4.50 (q, J = 7.08 Hz, 2H), 1.47 (t, J = 7.08 Hz, 3H). |
58.1% | With acetic acid; In N,N-dimethyl-formamide; at 100℃; for 14.0h; | To a solution of ethyl 3,5-diamino-1 -hydro-pyrazole-4-carboxylate (5.00 g, 29.38 mmol)In N, N-dimethylformamide ((80 mL)1,1,3,3-tetramethoxypropane (14.50 mL, 88.15 mmol)And acetic acid (0.34 mL, 5.88 mmol).After the reaction mixture was stirred at 100 C for 14 hours,Concentrate under reduced pressure. The resulting residue was dispersed in a mixed system of dichloromethane (50 mL) and water (50 mL), the organic phase was separated and the aqueous phase was extracted with dichloromethane (100 mL x 3). The combined organic phases were washed with saturated brine (100 mL x 3), dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (NH3 in methanol (7M) / methylene chloride (v / v) = 1/100) to give the title compound as a pale yellow solid (3.52 g, 58.1%). |
35.3% | With triethylamine; In N,N-dimethyl-formamide; at 100℃; for 14.0h; | ethyl 2-aminopyrazolo[l ,5-a]pyrimidine-3-carboxylateA mixture of ethyl 3,5-diamino-l H-pyrazole-4-carboxylate (1.0 g, 5.9 mmol), 1,1,3,3- tetramethoxypropane (2.9 mL, 18 mmol), triethylamine (2 mL, 10 mmol), and DMF (15 mL) was heated at 100 0C for 14 hrs, then a further 2 mL of 1,1,3,3-tetramethoxypropane was added. After adding the additional 1,1,3,3-tetramethoxypropane, a significant by-product was noted and heating was stopped immediately. The reaction was cooled to room temperature and the DMF was removed in vacuo. The residue was partitioned between DCM and water, then the organic layer was concentrated and the residue purified by silica chromatography, eluting with 95:5 DCM: 2M methanolic ammonia solution to afford 420 mg (35%) of ethyl 2-aminopyrazolo[l,5- a]pyrimidine-3-carboxylate. 1H NMR (500 MHz, CDCl3) delta 8.57 (dd, J = 4.3, 1.6, IH), 8.43 (dd, J = 6.7, 1.6, IH), 6.84 (dd, J = 6.7, 4.4, IH), 5.52 (s, 2H), 4.48 (q, J= 7.1, 2H), 1.45 (t, J= 7.1, 3H). |
With acetic acid; at 25 - 95℃; | Another exemplary study was carried out as follow: Compound J and AcOH (7.5 volumes) were charged to an appropriately sized jacketed reactor. Mixing was started and the jacket was set to maintain an internal temperature of 25 C . Tetramethoxypropane (1.01 equivalents) was charged to the reactor and the j acket was set to maintain an internal temperature of 95 C. Once at temperature, the reaction continued mixing for 1.5 hours and then an IPC sample was taken. The passing criteria for this IPC was 60 C to prevent premature precipitation. Once the target volume was reached the jacket was set to maintain an internal temperature of 50 C. A 4 M solution of NaOH was then charged to the reactor via cannula to neutralize the remaining AcOH. This typically required approximately 10 volumes of the base solution. The neutralization was monitored by pH probe. Solids began to precipitate during the course of the charge. Once neutralized, the slurry was cooled to 20 C and held at that temperature for 1 hour prior to isolation via Buchner funnel. The cake was washed twice with 2 volumes of water and once with 2 volumes of MeOH. The solids were then dried to constant weight in a vacuum oven to provide Compound H. This procedure had been performed on 110 g scale to produce a granular light brown solid. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Ethyl 3,5-diamino-1H-pyrazole-4-carboxylate (9.2 mmol, 1.0 eq) was dissolved in N,N-dimethyl formamide (20 mL) and cesium carbonate (1.5 eq), and <strong>[1001-26-9]ethyl 3-ethoxyacrylate</strong> (1.5 eq) were added. The reaction was heated to 110° C. for 16 h. The mixture was cooled. Acetic acid (1.2 mL) was added, followed by 90 mL of water. The mixture was stirred until a solid formed, which was collected by filtration, and washed with excess water to provide compound 124. |
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