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Structure of 55876-82-9

Chemical Structure| 55876-82-9

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Product Details of [ 55876-82-9 ]

CAS No. :55876-82-9
Formula : C9H11NO2
M.W : 165.19
SMILES Code : O=C(OCC)C1=NC=C(C)C=C1
MDL No. :MFCD10566273
InChI Key :QURWMBHAPRCRJZ-UHFFFAOYSA-N
Pubchem ID :12243769

Safety of [ 55876-82-9 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H315-H319-H335
Precautionary Statements:P261-P305+P351+P338

Computational Chemistry of [ 55876-82-9 ] Show Less

Physicochemical Properties

Num. heavy atoms 12
Num. arom. heavy atoms 6
Fraction Csp3 0.33
Num. rotatable bonds 3
Num. H-bond acceptors 3.0
Num. H-bond donors 0.0
Molar Refractivity 45.29
TPSA ?

Topological Polar Surface Area: Calculated from
Ertl P. et al. 2000 J. Med. Chem.

39.19 Ų

Lipophilicity

Log Po/w (iLOGP)?

iLOGP: in-house physics-based method implemented from
Daina A et al. 2014 J. Chem. Inf. Model.

2.23
Log Po/w (XLOGP3)?

XLOGP3: Atomistic and knowledge-based method calculated by
XLOGP program, version 3.2.2, courtesy of CCBG, Shanghai Institute of Organic Chemistry

2.41
Log Po/w (WLOGP)?

WLOGP: Atomistic method implemented from
Wildman SA and Crippen GM. 1999 J. Chem. Inf. Model.

1.57
Log Po/w (MLOGP)?

MLOGP: Topological method implemented from
Moriguchi I. et al. 1992 Chem. Pharm. Bull.
Moriguchi I. et al. 1994 Chem. Pharm. Bull.
Lipinski PA. et al. 2001 Adv. Drug. Deliv. Rev.

0.98
Log Po/w (SILICOS-IT)?

SILICOS-IT: Hybrid fragmental/topological method calculated by
FILTER-IT program, version 1.0.2, courtesy of SILICOS-IT, http://www.silicos-it.com

1.98
Consensus Log Po/w?

Consensus Log Po/w: Average of all five predictions

1.83

Water Solubility

Log S (ESOL):?

ESOL: Topological method implemented from
Delaney JS. 2004 J. Chem. Inf. Model.

-2.55
Solubility 0.461 mg/ml ; 0.00279 mol/l
Class?

Solubility class: Log S scale
Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly

Soluble
Log S (Ali)?

Ali: Topological method implemented from
Ali J. et al. 2012 J. Chem. Inf. Model.

-2.88
Solubility 0.22 mg/ml ; 0.00133 mol/l
Class?

Solubility class: Log S scale
Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly

Soluble
Log S (SILICOS-IT)?

SILICOS-IT: Fragmental method calculated by
FILTER-IT program, version 1.0.2, courtesy of SILICOS-IT, http://www.silicos-it.com

-2.88
Solubility 0.215 mg/ml ; 0.0013 mol/l
Class?

Solubility class: Log S scale
Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly

Soluble

Pharmacokinetics

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

Yes
P-gp substrate?

P-glycoprotein substrate: SVM model built on 1033 molecules (training set)
and tested on 415 molecules (test set)
10-fold CV: ACC=0.72 / AUC=0.77
External: ACC=0.88 / AUC=0.94

No
CYP1A2 inhibitor?

Cytochrome P450 1A2 inhibitor: SVM model built on 9145 molecules (training set)
and tested on 3000 molecules (test set)
10-fold CV: ACC=0.83 / AUC=0.90
External: ACC=0.84 / AUC=0.91

Yes
CYP2C19 inhibitor?

Cytochrome P450 2C19 inhibitor: SVM model built on 9272 molecules (training set)
and tested on 3000 molecules (test set)
10-fold CV: ACC=0.80 / AUC=0.86
External: ACC=0.80 / AUC=0.87

No
CYP2C9 inhibitor?

Cytochrome P450 2C9 inhibitor: SVM model built on 5940 molecules (training set)
and tested on 2075 molecules (test set)
10-fold CV: ACC=0.78 / AUC=0.85
External: ACC=0.71 / AUC=0.81

No
CYP2D6 inhibitor?

Cytochrome P450 2D6 inhibitor: SVM model built on 3664 molecules (training set)
and tested on 1068 molecules (test set)
10-fold CV: ACC=0.79 / AUC=0.85
External: ACC=0.81 / AUC=0.87

No
CYP3A4 inhibitor?

Cytochrome P450 3A4 inhibitor: SVM model built on 7518 molecules (training set)
and tested on 2579 molecules (test set)
10-fold CV: ACC=0.77 / AUC=0.85
External: ACC=0.78 / AUC=0.86

No
Log Kp (skin permeation)?

Skin permeation: QSPR model implemented from
Potts RO and Guy RH. 1992 Pharm. Res.

-5.6 cm/s

Druglikeness

Lipinski?

Lipinski (Pfizer) filter: implemented from
Lipinski CA. et al. 2001 Adv. Drug Deliv. Rev.
MW ≤ 500
MLOGP ≤ 4.15
N or O ≤ 10
NH or OH ≤ 5

0.0
Ghose?

Ghose filter: implemented from
Ghose AK. et al. 1999 J. Comb. Chem.
160 ≤ MW ≤ 480
-0.4 ≤ WLOGP ≤ 5.6
40 ≤ MR ≤ 130
20 ≤ atoms ≤ 70

None
Veber?

Veber (GSK) filter: implemented from
Veber DF. et al. 2002 J. Med. Chem.
Rotatable bonds ≤ 10
TPSA ≤ 140

0.0
Egan?

Egan (Pharmacia) filter: implemented from
Egan WJ. et al. 2000 J. Med. Chem.
WLOGP ≤ 5.88
TPSA ≤ 131.6

0.0
Muegge?

Muegge (Bayer) filter: implemented from
Muegge I. et al. 2001 J. Med. Chem.
200 ≤ MW ≤ 600
-2 ≤ XLOGP ≤ 5
TPSA ≤ 150
Num. rings ≤ 7
Num. carbon > 4
Num. heteroatoms > 1
Num. rotatable bonds ≤ 15
H-bond acc. ≤ 10
H-bond don. ≤ 5

1.0
Bioavailability Score?

Abbott Bioavailability Score: Probability of F > 10% in rat
implemented from
Martin YC. 2005 J. Med. Chem.

0.55

Medicinal Chemistry

PAINS?

Pan Assay Interference Structures: implemented from
Baell JB. & Holloway GA. 2010 J. Med. Chem.

0.0 alert
Brenk?

Structural Alert: implemented from
Brenk R. et al. 2008 ChemMedChem

0.0 alert: heavy_metal
Leadlikeness?

Leadlikeness: implemented from
Teague SJ. 1999 Angew. Chem. Int. Ed.
250 ≤ MW ≤ 350
XLOGP ≤ 3.5
Num. rotatable bonds ≤ 7

No; 1 violation:MW<1.0
Synthetic accessibility?

Synthetic accessibility score: from 1 (very easy) to 10 (very difficult)
based on 1024 fragmental contributions (FP2) modulated by size and complexity penaties,
trained on 12'782'590 molecules and tested on 40 external molecules (r2 = 0.94)

1.83

Application In Synthesis of [ 55876-82-9 ]

* 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.

  • Downstream synthetic route of [ 55876-82-9 ]

[ 55876-82-9 ] Synthesis Path-Downstream   1~35

  • 2
  • [ 55876-82-9 ]
  • [ 20970-77-8 ]
  • 3
  • [ 55876-82-9 ]
  • 5-methylpicolinohydrazide [ No CAS ]
  • 4
  • [ 96-48-0 ]
  • [ 55876-82-9 ]
  • [ 5520-43-4 ]
  • 5
  • [ 55876-82-9 ]
  • [ 55876-86-3 ]
  • [ 55876-85-2 ]
  • 6
  • ethyl 2-azido-5-methylhexa-2,4-dienoate [ No CAS ]
  • [ 55876-82-9 ]
  • [ 100445-43-0 ]
  • 9
  • [ 3510-66-5 ]
  • [ 64-17-5 ]
  • [ 201230-82-2 ]
  • [ 55876-82-9 ]
  • 10
  • [ 491-35-0 ]
  • [ 55876-82-9 ]
  • [ 764717-55-7 ]
  • 11
  • [ 55876-82-9 ]
  • 2-bromo-1-(5-methyl-pyridin-2-yl)-2-quinolin-4-yl-ethanone [ No CAS ]
  • 12
  • [ 55876-82-9 ]
  • 4-(5-methyl-pyridin-2-yl)-5-quinolin-4-yl-thiazol-2-ylamine [ No CAS ]
  • 13
  • [ 107-86-8 ]
  • [ 55876-82-9 ]
  • 14
  • [ 55876-82-9 ]
  • [ 39977-48-5 ]
  • 16
  • [ 55876-82-9 ]
  • [ 80926-73-4 ]
  • 17
  • [ 55876-82-9 ]
  • [ 70990-94-2 ]
  • 22
  • [ 55876-82-9 ]
  • [ 53574-57-5 ]
  • 23
  • [ 55876-82-9 ]
  • [ 50501-35-4 ]
  • 25
  • [ 55876-82-9 ]
  • 5-(2-Amino-2-methoxycarbonyl-ethyl)-pyridine-2-carboxylic acid methyl ester; hydrochloride [ No CAS ]
  • 26
  • [ 55876-82-9 ]
  • N-Acetyl-3-(1-methoxy-2-methoxycarbonyl-5-pyridino)alanin-ethylester-perchlorat [ No CAS ]
  • 27
  • [ 55876-82-9 ]
  • N-(p-Tolylsulfonylethoxycarbonyl)-3-(1-methoxy-2-methoxycarbonyl-5-pyridino)alanin-methylester-perchlorat [ No CAS ]
  • 28
  • [ 589-93-5 ]
  • [ 55876-82-9 ]
  • 29
  • [ 55876-82-9 ]
  • [ 75-05-8 ]
  • [ 868395-55-5 ]
YieldReaction ConditionsOperation in experiment
84% With sodium ethanolate; In toluene; for 5h;Reflux; EXAMPLE 2 Synthesis of (5-amino-1H-pyrazol-4-yl)-(5-methylpyridin-2-yl)-methanone Sodium (2.2 g, 0.0963 moles) and anhydrous ethanol were combined and stirred until dissolved. The ethanol and azeotrope were stripped off with anhydrous toluene (35 ml). Additional anhydrous toluene (35 ml) was added followed by <strong>[55876-82-9]ethyl-5-methylpyridinecarboxylate</strong> (15.9 g, 0.0963 moles) and anhydrous acetonitrile (6.6 ml, 0.125 moles). The mixture was refluxed for 5 hrs then stirred at room temperature overnight. The reaction was then diluted with heptane (300 ml) and the solid was filtered and dried. LC/MS M +H 161. The solid was then suspended in dichloromethane (150 ml) and acidified with acetic acid. The mixture was filtered through a silica gel plug with dichloromethane. The organic portions were removed to yield a dark brown solid, 3-(5-methylpyridin-2-yl)-3-oxopropionitrile (12.98 g, 84% yield), which was used without further purification. Next, 3-(5-methylpyridin-2-yl)-3-oxopropionitrile (12.98 g, 0.081 moles) and dichloromethane (150 ml) were combined and cooled to -10 C. Dimethylformamide dimethylacetal (2.57 g, 0.0216 moles) was added. TLC showed the reaction was complete after 2 hours. The reaction was concentrated to a brown oil. LC/MS M +H 216. Next, the brown oil was dissolved in ethanol (125 ml) with aminoguanidine nitrate (14.1 g, 0.103 moles) and 10 N sodium hydroxide (8.5 ml). After 5 hours at reflux the reaction was cooled to room temperature and stirred overnight. LC/MS showed that the reaction was complete. The solvent was stripped off and the residue dissolved in ethyl acetate and washed with water (2 X), dried over magnesium sulfate, filtered and stripped to a brown solid which was identified as (3-amino-1H-pyrazol-4-yl)-(5-methylpyridin-2-yl)-methanone (5.27 g, 32% yield). LC/MS M +H 203. 1H NMR (DMSO) 2.39 (3H, s, CH3), 6.88 (2H, br, s), 7.8 (1H, d), 7.9 (1H, d), 8.32 (1H, s), 856 (1H, s), 11.88 (1H, br, s).
  • 30
  • [ 1620-77-5 ]
  • [ 55876-82-9 ]
YieldReaction ConditionsOperation in experiment
With sulfuric acid; sodium hydrogencarbonate; In ethanol; Synthesis Example 1 Ethyl 5-methylpyridine-2-carboxylate STR24 200 ml of ethanol and 100 ml (1.88 mol) of concentrated sulfuric acid were added to 55.5 g of 5-methylpyridine-2-carbonitrile to form a homogeneous solution, followed by heating under reflux for 2 days. The reaction liquid was gradually poured into a saturated aqueous solution of sodium hydrogencarbonate under cooling with ice to neutralize the sulfuric acid, followed by extraction with dichloromethane. The organic layer was washed with a saturated aqueous solution of common salt and dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated in a reduced pressure to give 78.1 g of a brown oil of the title compound as the crude product.
  • 31
  • [ 55876-82-9 ]
  • 5-methyl-pyridine-2-carboxylic acid hydrochloride [ No CAS ]
YieldReaction ConditionsOperation in experiment
37% In 6N-hydrochloric acid; acetonitrile; Synthesis Example 2 2-Carboxy-5-methylpyridinium chloride STR25 78.1 g of the crude product of the <strong>[55876-82-9]ethyl 5-methylpyridine-2-carboxylate</strong> obtained in Synthesis Example 1 was dissolved in 200 ml of 6N-hydrochloric acid, followed by heating under reflux for 16 hours. The reaction solution was concentrated in a reduced pressure. Then, acetonitrile was added to the residue, and the white crystal thus precipitated was recovered by filtration, washed with acetonitrile and dried at 90 C. to give 26.3 g of the title compound. Yield 37%. 1H-NMR (400 MHz, CDCl3) delta; 8.51 (1H, m), 8.37 (1H, m), 8.21 (1H, d, J=8.0 Hz), 2.42 (3H, s).
  • 32
  • [ 16713-45-4 ]
  • [ 3674-13-3 ]
  • [ 55876-82-9 ]
YieldReaction ConditionsOperation in experiment
With triethylamine; In 1,4-dioxane; EXAMPLE 6 Preparation of ethyl 5-methylpyridine-2-carboxylate 6.1 g of triethylamine are added at 0 C. to 13 g of ethyl 2,3-di-bromopropionate in 50 ml of dioxane. The mixture is stirred for 2 hours at room temperature and then a solution of 5.6 g of 1-dimethylamino-1-aza-3-methyl-1,3-butadiene and 6.1 g of triethylamine in 50 ml of dioxane is added dropwise. The reaction mixture is kept for 30 hours at 70 C. and then cooled and concentrated by evaporation. The residue is partitioned between water and ether and the organic phase is washed with brine, dried and concentrated by evaporation. The residue is distilled under reduced pressure, affording 3.2 g of the title compound as an oil with a boiling point of 69-74 C. (at 0.08 mbar).
  • 33
  • [ 1620-77-5 ]
  • [ 64-17-5 ]
  • [ 55876-82-9 ]
YieldReaction ConditionsOperation in experiment
43% With sulfuric acid; at 80℃; for 48h; To a solution of 21 5-methylpyridine-2-carbonitrile (5 g, 42.3 mmol, 1.00 equiv) in 37 ethanol (40 mL) was added 38 sulfuric acid (10 mL, 4.00 equiv). The resulting solution was stirred for 2 days at 80 C. The reaction mixture was cooled to 25 C. The resulting mixture was concentrated under vacuum. The resulting solution was diluted with water (100 mL). The pH value of the solution was adjusted to 8-9 with potassium carbonate. The resulting solution was extracted with ethyl acetate (3×100 mL). The organic layers were washed with water (3×50 mL) and brine (3×50 mL). The mixture was dried over anhydrous sodium sulfate and concentrated under vacuum to afford 3 g (43%) of 36 methyl 5-methylpyridine-2-carboxylate as light yellow oil. LC-MS: m/z=166[M+H]+.
  • 35
  • [ 55876-82-9 ]
  • [ 14540-12-6 ]
 

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Technical Information

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[ 55876-82-9 ]

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