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Structure of 17288-35-6

Chemical Structure| 17288-35-6

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Product Details of [ 17288-35-6 ]

CAS No. :17288-35-6
Formula : C8H6N2O2
M.W : 162.15
SMILES Code : O=C(C1=CC2=NC=CC=C2N1)O
MDL No. :MFCD09955613
InChI Key :KBHQUFPZXCNYKN-UHFFFAOYSA-N
Pubchem ID :22612670

Safety of [ 17288-35-6 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H315-H319-H332-H335
Precautionary Statements:P261-P280-P305+P351+P338

Computational Chemistry of [ 17288-35-6 ] Show Less

Physicochemical Properties

Num. heavy atoms 12
Num. arom. heavy atoms 9
Fraction Csp3 0.0
Num. rotatable bonds 1
Num. H-bond acceptors 3.0
Num. H-bond donors 2.0
Molar Refractivity 43.05
TPSA ?

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

65.98 Ų

Lipophilicity

Log Po/w (iLOGP)?

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

0.74
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

0.93
Log Po/w (WLOGP)?

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

1.26
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.

0.18
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

1.38
Consensus Log Po/w?

Consensus Log Po/w: Average of all five predictions

0.9

Water Solubility

Log S (ESOL):?

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

-1.92
Solubility 1.95 mg/ml ; 0.012 mol/l
Class?

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

Very soluble
Log S (Ali)?

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

-1.9
Solubility 2.03 mg/ml ; 0.0125 mol/l
Class?

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

Very 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

-2.27
Solubility 0.863 mg/ml ; 0.00532 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.

-6.63 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.

0.56

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)

1.58

Application In Synthesis of [ 17288-35-6 ]

* 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 [ 17288-35-6 ]

[ 17288-35-6 ] Synthesis Path-Downstream   1~4

  • 1
  • [ 17288-32-3 ]
  • [ 17288-35-6 ]
YieldReaction ConditionsOperation in experiment
82% 3-Amino-2-chloro-pyridine 4f (150 mg, 1.17 mmol), ethyl pyruvate 8 (0.25 ml, 2.00 mmol), pyridinium p-toluenesulfonate, (73 mg, 0.29 mmol) and tetraethoxy-silane (0.26 ml, 1.18 mmol) were suspended in 0.4 ml pyridine and stirred for 24 h at 20 °C. Afterwards Pd[P(C6H6)3]4 (70 mg, 0.06 mmol) and N,N-dicyclohexylmethylamine (0.35 ml, 2.06 mmol) were added and the reaction mixture was heated in a microwave oven to 160 °C for 20 min. The reaction mixture is diluted with 100 ml dichloromethan and extracted two times with 50 ml of a half saturated aqueous sodium hydrogencarbonat solution. The organic layer was dried with sodium sulfate, the solvent was evaporated under reduced pressure and the crude product was purified using chromatography method P3, yielding 190 mg (1.00 mmol) of 1H-Pyrrolo[3,2-b]pyridine-2-carboxylic acid ethyl ester. The ester was dissolved in 17 ml ethanol and 5 ml water. To this solution lithium hydroxide (120 mg, 5.00 mmol) was added. After 16 h the pH value of the reaction mixture was adjusted to pH 4 and the solvent is evaporated in vacuum. The crude product was purified using an acid ion exchanger (Strata-X-C, Phenomenex), yielding of 155 mg (82percent) of the title compound. Purity by method A1: >95percent; MS (ESI) m/z 163 (M + H)+; 1H NMR (DMSO) delta (ppm) 13.34 (br, 1H), 8.77 (d, J = 5.3 Hz, 1H), 8.53 (d, J = 8.3 Hz, 1H), 7.73 (dd, J = 5.4 Hz, J = 8.3 Hz, 1H), 7.33 (br, 1H); 13C NMR (500 MHz, DMSO) delta (ppm) 161.4 (s), 138.0 (s), 136.1 (s), 135.8 (s), 132.7 (s), 128.6 (s), 119.6 (s), 101.2 (s).
With sodium hydroxide; water; for 3h;Heating / reflux; A suspension of 1H PYRROLO [3,2-b] pyridine-2-carboxylic acid ethyl ester (Preparation 31,0. 34g, 1. 77MMOL) in aqueous sodium hydroxide solution (2M, lOmL) was heated under reflux for 3h and the resulting solution was allowed to cool to rt. The pH was adjusted to 4 by addition of glacial acetic acid. Excess acetic acid was removed in vacuo and the resulting suspension cooled to 0°C and then left standing at rt for 16h. The resulting beige precipitate was collected by filtration and dried to give the title compound as a beige solid. 8H (d6 DMSO): 7.12 (1H, s), 7.23 (1H, dd), 7.79 (1H, d), 8.42 (1H, dd).
  • 2
  • [ 67-56-1 ]
  • [ 17288-32-3 ]
  • [ 394223-19-9 ]
  • [ 853685-35-5 ]
  • [ 17288-35-6 ]
  • 3
  • [ 17288-32-3 ]
  • [ 853685-35-5 ]
  • [ 17288-35-6 ]
  • 4
  • [ 64-17-5 ]
  • [ 17288-35-6 ]
  • [ 17288-32-3 ]
YieldReaction ConditionsOperation in experiment
With sulfuric acid; at 80℃; for 12h; To a mixture of 1H-pyrrolo[3,2-bjpyridine-2-carboxylic acid (5 g, 30.8 mmol, 1 eq) in 50 mL of ethyl alcohol was added H2S04 (15.4 g, 154 mmol, 98percent purity, 5 eq) at 15°C, and the mixture was stirred at 80 °C for 12 hours. To the reaction mixture was added NaOH (15percent in water) to neutralize H2S04 until the pH 7-8. A precipitate formed which was filtered. The filter cakewas washed with 50 mL of water to get the crude product (part 1). The mother liquors were concentrated under reduced pressure and the aqueous phase was extracted with three 20 mL portions of ethyl acetate. The combined organic layers were concentrated under reduced pressure to give a solid (part 2). The mixture of solids from part 1 and part 2 were combined to produce the ethyl ester as a white solid which could be used directly into the next step withoutfurther purification.
With sulfuric acid; at 15 - 80℃; for 12h;Inert atmosphere; A mixture of 1H-pyrrolo [3 ,2-blpyridine-2-carboxylic acid, compound 76 (5.0 g, 30.8 mmol, 1.0 eq) in 50 mL of ethyl alcohol was added H2S04 (15.4 g, 154.1 mmol, 98percent purity, 5.0 eq) at 15°C, and then the mixture was stirred at 80°C for 12 hours.The reaction was monitored by LCMS and allowed to run until complete. To the reaction mixture was added NaOH (15percent in water) to neutralized H2S04 until the pH ?7-8. Some brown solids formed which were filtered and washed with 50 mL of water to isolate the crude product (part 1). The filtrate was concentrated under reduced pressure to remove ethyl alcohol and then the aqueous phase was extracted with three 20 mL portions of ethyl acetate. The combinedorganic layers and part 1 were concentrated under reduced pressure to give 7.9 g of compound77 as a crude white solid.
 

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Technical Information

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