Structure of 1979-97-1
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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. : | 1979-97-1 |
Formula : | C5H5N3O4S |
M.W : | 203.18 |
SMILES Code : | OC1=NC(SC)=NC(O)=C1[N+]([O-])=O |
MDL No. : | MFCD02323207 |
Boiling Point : | No data available |
InChI Key : | LMCNSMCHUYZUFF-UHFFFAOYSA-N |
Pubchem ID : | 14893043 |
GHS Pictogram: |
![]() |
Signal Word: | Warning |
Hazard Statements: | H302-H315-H319-H335 |
Precautionary Statements: | P261-P305+P351+P338 |
Num. heavy atoms | 13 |
Num. arom. heavy atoms | 6 |
Fraction Csp3 | 0.2 |
Num. rotatable bonds | 2 |
Num. H-bond acceptors | 6.0 |
Num. H-bond donors | 2.0 |
Molar Refractivity | 46.62 |
TPSA ? Topological Polar Surface Area: Calculated from |
137.36 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
0.34 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
1.94 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
0.52 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
-1.2 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
-1.49 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
0.02 |
Log S (ESOL):? ESOL: Topological method implemented from |
-2.53 |
Solubility | 0.598 mg/ml ; 0.00294 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (Ali)? Ali: Topological method implemented from |
-4.45 |
Solubility | 0.00723 mg/ml ; 0.0000356 mol/l |
Class? Solubility class: Log S scale |
Moderately soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-0.39 |
Solubility | 83.3 mg/ml ; 0.41 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 |
-6.16 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 |
1.0 |
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 |
2.0 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) |
2.23 |
* 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 |
---|---|---|
88.75% | With nitric acid; at 20 - 50℃; for 5h; | This embodiment is a method for synthesizing 2-methylthio-4,6-dichloro-5-nitropyrimidine. The synthetic steps are as follows:(1) Take 200g of 2-methylthio-4,6-dihydroxypyrimidine in batches and add it to 600ml of fuming nitric acid, and stir at room temperatureAfter 1h, heat to 50 C for 4h;(2) After the heating reaction is completed, drop to room temperature, slowly pour it into ice water, stir for 1 h, and filter. Wash the filter cake to neutrality. After digging out the filter cake, dry to obtain 240 g of compound B. The purity is greater than 95%. Rate 88.75%;(3) Disperse 100 g of compound B in 450 ml of phosphorous oxychloride, and dropwise add 60 ml of diisopropylethylamine at room temperature. After the addition of diisopropylethylamine is completed, raise the reflux temperature to chlorination reaction 2 -5h;(4) After the chlorination reaction is completed, the obtained mixture is cooled and decompressed, and concentrated to remove excess phosphorus oxychloride. The residue is slowly poured into 1 kg of crushed ice and stirred for 1 h, and extracted with 200 ml of ethyl acetate 2-3 times The organic phases were combined, washed with a saturated aqueous sodium bicarbonate solution to neutral pH, washed once with a saturated aqueous sodium chloride solution, then dried over anhydrous sodium sulfate, filtered to remove the drying agent, and concentrated to obtain a crude product, which was obtained by recrystallization from n-hexane. 118g pure product, purity is greater than 98%, yield is 97.87%. |
72% | With nitric acid; at 0℃; for 2h; | EXAMPLE 99; 4-hydroxy-4-[3-(trifluoromethy)phenyl]piperidine-1-carboxylic acid (7-methoxy-5-methylsulfanyl-thiazolo[5,4-d]pyrimidin-2-yl)-amide; Step 1: 4,6-Dihydroxy-2-methylthiopyrimidine (10.0 g, 63.22 mmol) was added over 1 hr to fuming nitric acid (30 mL) at 0 C. The red solution was stirred an additional 1 hr at 0 C. and then poured onto ice to give a light brown solid which was filtered off and washed with water and diethyl ether. The solid was dried under vacuo to give 4,6-Dihydroxy-2-methylthio-5-nitropyrimidine (9.30 g, 72%) as a light brown solid. LRMS for C5H5N3O4S (M+H)+ at m/z=203. The NMR spectrum obtained on the sample is compatible with its structure. |
67% | With nitric acid; acetic acid; at 5 - 20℃; for 1h; | To 6 mL of acetic acid cooled at 5C on an ice bath were added fuming nitric acid (2.5 mL) and (22e) (2.0 g, 12.6 mmol). After 1 hour stirring at room temperature, the mixture was cooled at 5C on an ice bath, water (50 mL) was added and the resulting precipitate was filtered off. Yield: 67%.Melting point: 220-221C (decomposition).H NMR (DMSO-dg) d 2.56 (s, 3H, S CH3).13C NMR (DMSO-dg) d 13.2 (SCH3), 117.4 (C-5), 158.7 (C-4/C-6), 164.6 (C-2). |
65% | A solution of 4,6-dihydroxy-2-methylthiopyrimidine (50 g, 316.09 mmol) in trifluoroacetic acid (210 mL) was stirred at RT for 30 min. The mixture was cooled to 5C then HNO3 fuming (19.5 mL, 426.73 mmol) was added drop wise at 5C. The temperature was maintained at 10-15C during the addition. The ice bath was removed and when the temperature reached 20C, a violent exothermic event occurred (from 20C to 45C in 5 seconds). The mixture was stirred at RT for 16h. The mixture was poured into a mixture of water and ice. The precipitate was filtered off and washed with water. The precipitate was dried under vacuum at 50C to give 42 g (65% yield) of intermediate S2. This intermediate was directly used in the next step without any further purification. | |
49% | With nitric acid; acetic acid; at 50℃; for 3h; | Step A: 2-Methylsulfanyl-5-nitro-pyrimidine-4,6-diol. 2-Methylsulfanyl-pyrimidine-4,6-diol (10 g, 63 mmol) was added portion-wise to a stirring solution of glacial acetic acid (25 mL) and concentrated nitric acid (10 mL) at 50 C. After 3 h, the reaction mixture was poured onto crushed ice and the product was isolated by filtration as a yellow solid (6 g, 49%). MS (ESI): mass calcd. for C5H5N3O4S, 203.0; m/z found, 202.4 [M-H]. |
49% | With nitric acid; acetic acid; In water; at 50℃; for 3h; | Intermediate 1: 2-Methylsulfanyl-5-nitro-pyrimidine-4,6-diol 2-Methylsulfanyl-pyrimidine-4,6-diol (10 g, 63 mmol) was added portion wise to a stirring solution of glacial acetic acid (25 mL) and concentrated nitric acid (10 mL) at 50 C. After 3 h, the reaction mixture was poured onto crushed ice and the product was isolated by filtration as a yellow solid (6 g, 49%). MS (ESI, negative mode): mass calcd. for C5H5N3O4S, 203.0; m/z found, 202.4 [M-H]. |
Method V: 4,6-Dihydroxy-2-methylthio-5-nitropyrimidine: A solution of 4,6-dihydroxy-2-methylthiopyrimidine (42 g, 0.257 mol) in trifluoroacetic acid (91 ml, 1.186 mol) was stirred at 23 C. and warmed until all solid had gone into solution. The reaction was stirred for five hours at 23 C. Next, fuming HNO3 (15 ml, 350 mmol) was added portion wise to the reaction mixture over 25 minutes at 0 C. The reaction was stirred for twenty hours at 23 C., and treated with H2O (at 23 C.) at 80% conversion (according LC-MS). The solid precipitate was captured via filteration giving 4,6-dihydroxy-2-methylthio-5-nitropyrimidine as a tan-colored solid. The crude solid was azeotroped with toluene to give 35 g of pale tan powdery solid. 1H-NMR: 300 MHz, (CD3OD, 300 MHz) d (ppm) 2.63 (s, 3H). LCMS-ESI+: calc'd for C5H4N3O4S: 202.0 (M-H-); Found: 202.0 (M-H-). | ||
With nitric acid; for 2h;Cooling with ice; | EXAMPLE 176; METHYL {4,6-DIAMINO-2-[5-CHLORO-3-(2,3,6-TMFLUOROBENZYL)-1H-INDAZOL- 1 -YL]PYRIMIDiN-5-YL} CARBAMATEH3; Step A; Solid 4}6-dihydroxy-2-(methylmio)pyrimidine (lOg, 63.mmol) was added in portions over 30min, to fuming nitric acid (30ml) cooled in an ice bath. After stirring for 90min in an ice bath the solution was poured over ice. The product was collected by filtration, washed with a small amount of ice water and air dried on the filter. NMR (400 MHz, CDC13): delta 7.02 (s, 2 H); 2.56 (s, 3 H). LC rt~= 0.49min (Method A, not ionized). | |
42 g | With nitric acid; trifluoroacetic acid; at 5 - 45℃; | A solution of F-2 (50 g, 316.09 mmol) in TFA (210 mL) was stirred at RT for 30 min. The mixture was cooled to 5C then HN03 fuming (19.5 mL, 426.73 mmol) was added drop wise at 5C. The temperature was maintained at 10-15C during the addition. The ice bath was removed and when the temperature reached 20C, a violent exothermic event occurred (from 20C to 45C in 5 seconds). The mixture was stirred at RT for 16h. The mixture was poured into a mixture of water and ice. The precipitate was filtered off and washed with water. The precipitate was dried under vacuum at 50C to give 42 g (65% yield) of intermediate G-2. This intermediate was directly used in the next step without any further purification. |
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