Structure of 103639-57-2
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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. : | 103639-57-2 |
Formula : | C7H15NO |
M.W : | 129.20 |
SMILES Code : | OCC[C@H]1NCCCC1 |
MDL No. : | MFCD08461072 |
InChI Key : | PTHDBHDZSMGHKF-ZETCQYMHSA-N |
Pubchem ID : | 736379 |
GHS Pictogram: |
![]() |
Signal Word: | Warning |
Hazard Statements: | H315-H319-H335 |
Precautionary Statements: | P261-P305+P351+P338 |
Num. heavy atoms | 9 |
Num. arom. heavy atoms | 0 |
Fraction Csp3 | 1.0 |
Num. rotatable bonds | 2 |
Num. H-bond acceptors | 2.0 |
Num. H-bond donors | 2.0 |
Molar Refractivity | 41.53 |
TPSA ? Topological Polar Surface Area: Calculated from |
32.26 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
1.83 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
0.38 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
0.13 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
0.57 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
1.23 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
0.83 |
Log S (ESOL):? ESOL: Topological method implemented from |
-0.75 |
Solubility | 23.1 mg/ml ; 0.178 mol/l |
Class? Solubility class: Log S scale |
Very soluble |
Log S (Ali)? Ali: Topological method implemented from |
-0.62 |
Solubility | 30.8 mg/ml ; 0.238 mol/l |
Class? Solubility class: Log S scale |
Very soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-1.28 |
Solubility | 6.7 mg/ml ; 0.0519 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 |
-6.82 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) |
1.79 |
* 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 |
---|---|---|
Into a flask was placed N-acetyl-L-Leucine (8.65 g) dissolved in 10 ml of methanol. The solution was heated, maintaining the temperature at from 35° C. to 40° C. with stirring. A tetrahydrofuran (THF) solution prepared from 50 ml of THF and 12.9 g (0.1 mol.) of 2-piperidine-2-yl-ethanol (mixture of R and S isomers) was added to the methanol solution maintaining the temperature of the combined solutions at 35° C. to 40° C. An additional 30 ml of THF was added and the resulting mixture was heated and maintained at a temperature of from 50° C. to 55° C. for 30 minutes. The reaction mixture was cooled over two hours to 15° C. and held at that temperature for one hour, during which time salt precipitated. The precipitate was recovered by vacuum filtration and dried under vacuum at ambient temperature (about 25° C.). The recovered precipitate was tested for ee purity by HPLC through derivatization of the product with benzoyl chloride and found to be 94.5percent ee S-isomer. A yield of 37.7percent based on the weight of the unresolved alcohol starting material was calculated (11.4 g isolated S-isomer), accordingly a loss of about 25percent S-isomer. Purification of Precipitate An aliquot of the precipitate salt thus formed (7.0 g) was suspended with stirring in a solvent comprising 50 ml of acetonitrile and 2.5 ml of methanol by heating the mixture to 55° C. and held for 30 minutes. The resultant suspension was cooled over a period of 2 hours to a temperature of 15° C. The resulting crystals were obtained by filtration and tested by HPLC for purity and a yield was calculated based on recovered weight. The precipitation yielded 6.7 g of precipitate (calculated yielded 95.7percent based on starting precipitated complex) and had a isomeric purity of 97.7percent ee based on HPLC analysis. Conversion to Free Base A salt of the piperidine ethanol is converted to the free base by dissolving 13 mmol. of the purified salt in 24 ml of 3N NaOH and stirring the resulting solution vigorously for about 1.5 hours. At the end of 1.5 hours of stirring, 7.5 ml of water is added to the solution. This mixture is then extracted with methylene chloride three times. The methylene chloride extracts are concentrated to yield approximately 13 mmol. of free piperidine ethanol. The chiral purity of the product is found to be the same as that of the original salt. | ||
The stereoisomer of the 2-Piperidin-2-yl-ethanol (Compound G1a) was prepared as described in the '878 publication in accordance with preparative Example 500, therein. Thus, a mixture of R and S enantiomers of piperidine-2-ethanol obtained from Acros and used as received (127 g, 980 mmol) was dissolved in 95percent EtOH (260 mL). To the aliphatic alcohol solution was added to (S)-(+)-camphorsulfonic acid obtained from Acros (228.7 g, 1.0 eq.) in 95percent EtOH (150 mL) and the resulting solution was warmed to reflux. To the warm solution was added Et2O (600 mL) and the solution cooled to room temperature and let stand 3 days. The resulting crystals were filtered and dried in vacuo (25 g): and analyzed by mp 173° C. (lit. 168° C.). The salt was then dissolved in NaOH (3M, 100 mL) and stirred 2 hours and the resulting solution was extracted with CH2Cl2 (5.x.100 mL). The combined organics were dried over Na2SO4, filtered and concentrated under reduced pressure to give (S)-piperidine-2-ethanol (7.8 g) a portion of which was recrystallized from Et2O: mp=69-70° C. (lit. 68-69° C.); [alpha]D=14.09° (CHCl3, c=0.2). Overall yield of S-isomer isolated, based on initial weight of starting alcohol was 6.1percent. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium carbonate; In 1-methyl-pyrrolidin-2-one; water; at 20 - 25℃; for 12h; | Example 4 Preparation of the Compound of Formula II (Scheme VI) 1-[3-Ethyl-7-[(1-oxido-3-pyridinyl)methyl]amino]pyrazolo[1,5-a]pyrimidin-5-yl]-2(s)-piperidinemethanol Into a three-neck flask fitted with a mechanical stirrer and a reflux condenser were placed the first amine adduct prepared in Step 3, compound "G", (7 kg, 23 mole), amino-alcohol compound G1a (5.6 kg, 43.3 mole), sodium carbonate (3.5 kg, 33.0 mole), 110 ml of water and 1-methyl-2-pyrrolidinone (NMP) (11 L). The reaction mixture was heated to 150° C. for 4 days. After chromatography indicated that the reaction was complete (90-95percent substrate consumed), the reaction mixture was cooled to room temperature and quenched by adding water. The mixture was then extracted with ethyl acetate. The batch was dried by distillation of the water azeotrope under atmospheric pressure and concentrated to about 28 L volume. THF was added and the solution was heated to reflux until all the solids dissolve. Ethyl acetate and trietylamine are added to the hot solution. The batch was cooled to ambient and then agitated with the temperature maintained in the range of from 20° C. to 25° C. for 12 hours. The solids were collected by filtration, washed first with ethyl acetate then water, and dried in the filter under vacuum for 24 hours with the temperature maintained at from 40° C. to 50° C., yielding 4.9 kg, 51.3percent of the compound of Formula II. DSC, 168.6° C.; Specific Rotation (10 mg/ml in MeOH, 20° C.), -117.8 °; 1H-NMR (400 MHz, DMSO): 8.31 ppm (1H, s), 8.11-8.13 ppm (1H, td, J=5.7 Hz, J=1.4 Hz), 7.97 ppm (1H, t, J=6.7 Hz), 7.68 ppm (1H, s), 7.41 ppm (1H, s), 7.37-7.43 ppm (1H, dd), 5.55 ppm (1H, s), 4.85 ppm (1H, t, J=5.4 Hz), 4.49-4.59 ppm (3H, m), 4.24-4.28 ppm (1H, broad), 3.27-3.46 ppm (2H, m), 2.76-2.83 ppm (1H, t, J=13.0 Hz), 2.45-2.50 ppm (2H, q, J=7.5 Hz), 1.72-1.79 (1H, m), 1.54-1.68 ppm (6H, m), 1.30-1.34 ppm (1H, m), 1.16 ppm (3H, t, J=7.5 Hz) |
A151157 [787622-24-6]
(R)-2-(Piperidin-2-yl)ethanol hydrochloride
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A186306 [786684-21-7]
(S)-2-(2-Hydroxyethyl)piperidine hydrochloride
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A430654 [1215020-95-3]
2-(Piperidin-2-yl)ethanol hydrochloride
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A151157 [787622-24-6]
(R)-2-(Piperidin-2-yl)ethanol hydrochloride
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A186306 [786684-21-7]
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A430654 [1215020-95-3]
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