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Chemical Structure| 5192-03-0 Chemical Structure| 5192-03-0
Chemical Structure| 5192-03-0
Product Citations

Product Citations

Ramirez, Eduardo ; Min, Sehong ; Ganegamage, Susantha K. ; Shimanaka, Kazuma ; Sosa, Magaly Guzman ; Dettmer, Ulf , et al.

Abstract: Alzheimer's disease (AD) is a multifactorial, chronic neurodegenerative disease characterized by the presence of extracellular beta-amyloid (Abeta) plaques, intraneuronal neurofibrillary tangles (NFTs), activated microglial cells, and an inflammatory state (involving reactive oxygen species production) in the brain. NFTs are comprised of misfolded and hyperphosphorylated forms of the microtubule-binding protein tau. Interestingly, the trimeric form of the 2N4R splice isoform of tau has been found to be more toxic than the trimeric 1N4R isoform in neuron precursor cells. Few drug discovery programs have focused on specific tau isoforms. The present drug discovery project is centered on the anti-aggregation effect of a series of seventeen 4- or 5-aminoindole carboxamides on the 2N4R isoform of tau. The selection of the best compounds was performed using alpha-synuclein (alpha-syn). The anti-oligomer and -fibril activities of newly synthesized aminoindole carboxamide derivatives were evaluated with biophys. methods, such as thioflavin T fluorescence assays, photo-induced crosslinking of unmodified proteins, and transmission electron microscopy. To evaluate the reduction of inclusions and cytoprotective effects, M17D neuroblastoma cells expressing inclusion-forming alpha-syn were treated with the best amide representatives. The 4-aminoindole carboxamide derivatives exhibited a better anti-fibrillar activity compared to their 5-aminoindole counterparts. The amide derivatives 2, 8, and 17 exerted anti-oligomer and anti-fibril activities on alpha-syn and the 2N4R isoform of tau. At a concentration of 40 μM, compound 8 reduced inclusion formation in M17D neuroblastoma cells expressing inclusion-prone alphaSynuclein3K::YFP. Our results demonstrate the potential of 4-aminoindole carboxamide derivatives with regard to inhibiting the oligomer formation of alpha-syn and tau (2N4R isoform) for further optimization prior to pre-clin. studies.

Keywords: Alzheimer's disease ; Amide ; Alpha-synuclein ; Fibril ; Oligomer

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Alternative Products

Product Details of [ 5192-03-0 ]

CAS No. :5192-03-0
Formula : C8H8N2
M.W : 132.16
SMILES Code : NC1=CC2=C(NC=C2)C=C1
MDL No. :MFCD00005679
InChI Key :ZCBIFHNDZBSCEP-UHFFFAOYSA-N
Pubchem ID :78867

Safety of [ 5192-03-0 ]

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

Calculated chemistry of [ 5192-03-0 ] Show Less

Physicochemical Properties

Num. heavy atoms 10
Num. arom. heavy atoms 9
Fraction Csp3 0.0
Num. rotatable bonds 0
Num. H-bond acceptors 0.0
Num. H-bond donors 2.0
Molar Refractivity 42.7
TPSA ?

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

41.81 Ų

Lipophilicity

Log Po/w (iLOGP)?

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

1.08
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

0.7
Log Po/w (WLOGP)?

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

1.76
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.

0.91
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

1.86
Consensus Log Po/w?

Consensus Log Po/w: Average of all five predictions

1.26

Water Solubility

Log S (ESOL):?

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

-1.77
Solubility 2.26 mg/ml ; 0.0171 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.

-1.16
Solubility 9.24 mg/ml ; 0.0699 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

-2.89
Solubility 0.171 mg/ml ; 0.00129 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.

-6.61 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

1.0 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)

1.12

Application In Synthesis of [ 5192-03-0 ]

* 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 [ 5192-03-0 ]

[ 5192-03-0 ] Synthesis Path-Downstream   1~6

  • 1
  • [ 5192-03-0 ]
  • [ 63558-65-6 ]
  • (1<i>H</i>-indol-5-yl)-(5-iodo-pyrimidin-4-yl)-amine [ No CAS ]
  • 2
  • [ 5192-03-0 ]
  • [ 24424-99-5 ]
  • [ 184031-16-1 ]
YieldReaction ConditionsOperation in experiment
> 100% In ethyl acetate; at 20℃; for 24h; To a solution 5-aminoindole (1.0 g, 7.6 mmol) in 100 mL of EtOAc was added di- tert-butyldicarbonate (4.1 g. 19 mmol). The mixture was stirred at ambient temperature for 24 hours and then was quenched with 20 mL H2O. The layers were separated and the aqueous layer was extracted 3 X 10 mL of EtOAc. The combined organic extracts were dried over anhydrous Na2SO4, filtered, concentrated under reduced pressure and purified via flash column chromatography (SiO2, 50% hexanes in EtOAc) to provide the title compound (1.8 g, 7.7 mmol, ->100% yield). MS (DCI/NH3) m/z 233 (M+H)+.
94% With triethylamine; In methanol; at 20℃; for 6h; Example 16 (1-{4-[3-(4-Chloro-3-(trifluoromethyl)phenyl)ureido]-2-fluorophenyl}-1H-indol-5-yl)carbamic acid tert-butyl ester (Table 1, Compound No. 16) Step A Preparation of (1H-indole-5-yl)carbamic acid tert-Butyl ester [Show Image] In 100 mL of methanol, 2.64 g (20 mmol) of 5-aminoindole was dissolved, and 4.15 mL (30 mmol) of triethylamine and 5.23 g (24 mmol) of Boc2O were added thereto and the mixture solution was stirred at room temperature for six hours. The reaction solution was concentrated under reduced pressure, and the residue was partitioned with ethyl acetate (200 mL) and water (100 mL), and the organic layer was washed with a saturated sodium chloride solution. The organic layer was dried and then concentrated under reduced pressure, and the residue was partitioned between ethyl acetate (200 mL) and water (100 mL) and the organic layer was washed with a saturated sodium chloride solution. The organic layer was dried and then concentrated under reduced pressure, and the residue was purified by a silica gel column (Wako Gel C200: 300 g, n-hexane:ethyl acetate=4:1) to obtain 4.38 g (94%) of (1H-indol-5-yl)carbamic acid tert-butyl ester as a white solid. 1H-NMR (270 MHz, CDCl3) δ (ppm): 1.43(9H,s), 6.38 (1H, br.s), 6.29-6.33 (1H, m), 7.04 (1H, dd, J=2.3, 8.9 Hz), 7.19 (1H, s), 7.23 (1H, d, J=8.9 Hz), 7.61 (1H, br.s)
43% With triethylamine; In dichloromethane; at 0 - 20℃; for 4h; Intermediate-69: tert-Butyl lH-indol-5-ylcarbamate To a stirred solution lH-indol-5 -amine (0.5 g, 3.78 mmol) in dichloromethane (10 mL), triethylamine (0.95g, 9.4 mmol) and di-tert-butyl dicarbonate (0.908 g, 4.166 mmol) were added at 0C. The reaction contents were stirred at room temperature for 4 h. The reaction was quenched with water and the mixture was extracted with ethyl acetate. The organic layer was concentrated in vacuo and the residue was purified by flash column chromatography to give tert-butyl lH-indol-5-ylcarbamate (0.380 g, 43%); MS: 233.5 (M+l).
In dichloromethane; at 20℃; A solution of 5-amino indole (2 g, 15.2 mmol) and di-tert-butyl dicarbonate (3.49 g. 15.2 mmol) in dichloromethane (20 ml) was stirred at ambient temperature overnight. The reaction mixture was concentrated under reduced pressure to yield crude (1H-indol-5-yl)-carbamic acid tert-butyl ester (3.47 g) which was used in the next step without further purification. MS: 250.3 (M+NH4)+.

  • 3
  • [ 5192-03-0 ]
  • [ 62088-13-5 ]
  • ethyl 3-(m-cyano-phenyl)-3-(indol-5-ylamino)-acrylate [ No CAS ]
  • 4
  • [ 5192-03-0 ]
  • [ 5162-82-3 ]
  • [ 930790-88-8 ]
YieldReaction ConditionsOperation in experiment
With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In N,N-dimethyl-formamide; for 2h; Step 1 A mixture of 5-aminoindole (1.32 g, 10 mmol), 1-hydroxybenzotriazole (1.49 g, 11 mmol), and 1-(3-dimethylaminopropyl)-3-ethyl-carbodiimide hydrochloride (2.11 g, 11 mmol) was dissolved in N,N-dimethylformamide (30 mL). To this was added <strong>[5162-82-3]3-chloro-4-methylbenzoic acid</strong> (1.71 g, 10 mmol) and the reaction mixture was stirred for 2 hours until the reaction was complete. The mixture was then partitioned between water and dichloromethane solution. The organic layer was separated and the aqueous layer was extracted with dichloromethane several times. The combined extracts were washed with water and brine, dried over anhydrous sodium sulfate, filtered, and concentrated under reduced pressure. The crude product was purified via Biotage Horizon (FlasH 40 M, silica, gradient from 0% ethyl acetate/hexane to 70% ethyl acetate/hexane) to give 3-chloro-N-(1H-indol-5-yl)-4-methylbenzamide as a light tan solid. MS (ESI) m/z 284.9 ([M+H]+).
  • 5
  • [ 5192-03-0 ]
  • [ 59514-18-0 ]
  • 6-bromo-N-(1H-indol-5-yl)-2,3,4,9-tetrahydro-1H-carbazol-1-amine [ No CAS ]
YieldReaction ConditionsOperation in experiment
54 mg (37%) Example 47 6-Bromo-N-(1H-indol-5-yl)-2,3,4,9-tetrahydro-1H-carbazol-1-amine 6-Bromo-N-(1H-indol-5-yl)-2,3,4,9-tetrahydro-1H-carbazol-1-amine was prepared from <strong>[59514-18-0]6-bromo-2,3,4,9-tetrahydro-1H-carbazol-1-one</strong> (100 mg, 0.76 mmol) and 5-aminoindole (100 mg, 0.76 mmol) in a similar manner as described above to give 54 mg (37%) of a white solid; 1H-NMR (DMSO-d6): delta 11.08 (s, 1H), 10.61 (s, 1H), 7.55 (d, 1H), 7.23 (d, 1H), 7.14-7.11 (m, 2H), 7.10 (d, 1H), 6.84-6.83 (m, 1H), 6.65 (dd, 1H), 6.18-6.17 (m, 1H), 5.21 (d, 1H), 4.77-4.71 (m, 1H), 2.68-2.54 (m, 2H), 2.02-1.89 (m, 2H), 1.84-1.73 (m, 2H); MS m/z (M+1) 378, 380.
  • 6
  • [ 5192-03-0 ]
  • [ 31191-08-9 ]
  • [ 108-94-1 ]
  • 6-(8,9,10,11-tetrahydro-3H-pyrrolo[3,2-a]phenanthridin-7-yl)pyridin-3-ol [ No CAS ]
 

Historical Records

Technical Information

Categories

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[ 5192-03-0 ]

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