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Chemical Structure| 87253-62-1 Chemical Structure| 87253-62-1

Structure of 87253-62-1

Chemical Structure| 87253-62-1

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Product Details of [ 87253-62-1 ]

CAS No. :87253-62-1
Formula : C8H8N4O2
M.W : 192.18
SMILES Code : O=C(C1=NN2C(C)=CC(C)=NC2=N1)O
MDL No. :MFCD00462463
InChI Key :LIVBNPDDJKFYDF-UHFFFAOYSA-N
Pubchem ID :676511

Safety of [ 87253-62-1 ]

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

Computational Chemistry of [ 87253-62-1 ] Show Less

Physicochemical Properties

Num. heavy atoms 14
Num. arom. heavy atoms 9
Fraction Csp3 0.25
Num. rotatable bonds 1
Num. H-bond acceptors 5.0
Num. H-bond donors 1.0
Molar Refractivity 47.67
TPSA ?

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

80.38 Ų

Lipophilicity

Log Po/w (iLOGP)?

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

1.18
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

0.76
Log Po/w (WLOGP)?

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

0.44
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.

0.57
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

0.19
Consensus Log Po/w?

Consensus Log Po/w: Average of all five predictions

0.63

Water Solubility

Log S (ESOL):?

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

-1.92
Solubility 2.31 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.

-2.03
Solubility 1.8 mg/ml ; 0.00938 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

-1.49
Solubility 6.19 mg/ml ; 0.0322 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

No
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

No
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.

-6.93 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)

2.16

Application In Synthesis of [ 87253-62-1 ]

* 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 [ 87253-62-1 ]

[ 87253-62-1 ] Synthesis Path-Downstream   1~28

  • 1
  • [ 3641-13-2 ]
  • [ 123-54-6 ]
  • [ 87253-62-1 ]
  • 2
  • [ 114040-29-8 ]
  • [ 87253-62-1 ]
YieldReaction ConditionsOperation in experiment
4 g With hydrogenchloride; water;Inert atmosphere; In 100ml RB flask 2-amino triazole 5-ethyl carboxylate (5gm) was taken. To it 2,4-pentandione (4.1ml) was added followed by addition of piperidine (4ml). This reaction mixture was refluxed for 3 daysunder nitrogen. Reaction mixture was cooled. Solvent from the RM was evaporated. To the residue water was added and neutralized with 6N HCl, solid precipitated. It was filtered and washed with diethyl ether and dried to give pure product as white solid (4 g, 55 %).
  • 3
  • [ 87253-62-1 ]
  • C8H7ClN4O [ No CAS ]
  • 4
  • [ 1869-24-5 ]
  • [ 87253-62-1 ]
  • [ 1602577-52-5 ]
YieldReaction ConditionsOperation in experiment
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In N,N-dimethyl-formamide; at 20.0℃; for 4.0h;Inert atmosphere; General procedure: In 25ml RB flask to a solution of Compound 9 (200 mg) in dry DMF (5ml), EDCI (250 mg, 1.25eq) and DMAP (130 mg,1eq) were added followed by addition of Sulfonamide (1eq). RM was stirred at RT for 4hrs. Solvent from the reaction mixture was evaporated. To the residue water was added and acidified with 6N HCl, solid precipitated out. Solid was filtered and dried. Crude solid was purified by flash chromatography eluating with 4-8% MeOH/DCM as solvent system to give pure product.
  • 5
  • [ 6961-82-6 ]
  • [ 87253-62-1 ]
  • [ 114008-32-1 ]
YieldReaction ConditionsOperation in experiment
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In N,N-dimethyl-formamide; at 20.0℃; for 4.0h;Inert atmosphere; General procedure: In 25ml RB flask to a solution of Compound 9 (200 mg) in dry DMF (5ml), EDCI (250 mg, 1.25eq) and DMAP (130 mg,1eq) were added followed by addition of Sulfonamide (1eq). RM was stirred at RT for 4hrs. Solvent from the reaction mixture was evaporated. To the residue water was added and acidified with 6N HCl, solid precipitated out. Solid was filtered and dried. Crude solid was purified by flash chromatography eluating with 4-8% MeOH/DCM as solvent system to give pure product.
  • 6
  • [ 92748-09-9 ]
  • [ 87253-62-1 ]
  • [ 1602577-55-8 ]
YieldReaction ConditionsOperation in experiment
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In N,N-dimethyl-formamide; at 20.0℃; for 4.0h;Inert atmosphere; General procedure: In 25ml RB flask to a solution of Compound 9 (200 mg) in dry DMF (5ml), EDCI (250 mg, 1.25eq) and DMAP (130 mg,1eq) were added followed by addition of Sulfonamide (1eq). RM was stirred at RT for 4hrs. Solvent from the reaction mixture was evaporated. To the residue water was added and acidified with 6N HCl, solid precipitated out. Solid was filtered and dried. Crude solid was purified by flash chromatography eluating with 4-8% MeOH/DCM as solvent system to give pure product.
  • 7
  • [ 57683-71-3 ]
  • [ 87253-62-1 ]
  • [ 114038-16-3 ]
YieldReaction ConditionsOperation in experiment
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In N,N-dimethyl-formamide; at 20.0℃; for 4.0h;Inert atmosphere; General procedure: In 25ml RB flask to a solution of Compound 9 (200 mg) in dry DMF (5ml), EDCI (250 mg, 1.25eq) and DMAP (130 mg,1eq) were added followed by addition of Sulfonamide (1eq). RM was stirred at RT for 4hrs. Solvent from the reaction mixture was evaporated. To the residue water was added and acidified with 6N HCl, solid precipitated out. Solid was filtered and dried. Crude solid was purified by flash chromatography eluating with 4-8% MeOH/DCM as solvent system to give pure product.
  • 8
  • [ 37526-59-3 ]
  • [ 87253-62-1 ]
  • [ 1602577-58-1 ]
YieldReaction ConditionsOperation in experiment
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In N,N-dimethyl-formamide; at 20.0℃; for 4.0h;Inert atmosphere; General procedure: In 25ml RB flask to a solution of Compound 9 (200 mg) in dry DMF (5ml), EDCI (250 mg, 1.25eq) and DMAP (130 mg,1eq) were added followed by addition of Sulfonamide (1eq). RM was stirred at RT for 4hrs. Solvent from the reaction mixture was evaporated. To the residue water was added and acidified with 6N HCl, solid precipitated out. Solid was filtered and dried. Crude solid was purified by flash chromatography eluating with 4-8% MeOH/DCM as solvent system to give pure product.
  • 9
  • [ 30058-40-3 ]
  • [ 87253-62-1 ]
  • [ 1602577-61-6 ]
YieldReaction ConditionsOperation in experiment
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In N,N-dimethyl-formamide; at 20.0℃; for 4.0h;Inert atmosphere; General procedure: In 25ml RB flask to a solution of Compound 9 (200 mg) in dry DMF (5ml), EDCI (250 mg, 1.25eq) and DMAP (130 mg,1eq) were added followed by addition of Sulfonamide (1eq). RM was stirred at RT for 4hrs. Solvent from the reaction mixture was evaporated. To the residue water was added and acidified with 6N HCl, solid precipitated out. Solid was filtered and dried. Crude solid was purified by flash chromatography eluating with 4-8% MeOH/DCM as solvent system to give pure product.
  • 10
  • [ 88-19-7 ]
  • [ 87253-62-1 ]
  • [ 1602577-63-8 ]
YieldReaction ConditionsOperation in experiment
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In N,N-dimethyl-formamide; at 20.0℃; for 4.0h;Inert atmosphere; General procedure: In 25ml RB flask to a solution of Compound 9 (200 mg) in dry DMF (5ml), EDCI (250 mg, 1.25eq) and DMAP (130 mg,1eq) were added followed by addition of Sulfonamide (1eq). RM was stirred at RT for 4hrs. Solvent from the reaction mixture was evaporated. To the residue water was added and acidified with 6N HCl, solid precipitated out. Solid was filtered and dried. Crude solid was purified by flash chromatography eluating with 4-8% MeOH/DCM as solvent system to give pure product.
  • 11
  • [ 52960-57-3 ]
  • [ 87253-62-1 ]
  • [ 1602577-64-9 ]
YieldReaction ConditionsOperation in experiment
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In N,N-dimethyl-formamide; at 20.0℃; for 4.0h;Inert atmosphere; General procedure: In 25ml RB flask to a solution of Compound 9 (200 mg) in dry DMF (5ml), EDCI (250 mg, 1.25eq) and DMAP (130 mg,1eq) were added followed by addition of Sulfonamide (1eq). RM was stirred at RT for 4hrs. Solvent from the reaction mixture was evaporated. To the residue water was added and acidified with 6N HCl, solid precipitated out. Solid was filtered and dried. Crude solid was purified by flash chromatography eluating with 4-8% MeOH/DCM as solvent system to give pure product.
  • 13
  • 2-difluoromethoxy-benzenesulphonamide [ No CAS ]
  • [ 87253-62-1 ]
  • [ 1602577-66-1 ]
YieldReaction ConditionsOperation in experiment
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In N,N-dimethyl-formamide; at 20.0℃; for 4.0h;Inert atmosphere; General procedure: In 25ml RB flask to a solution of Compound 9 (200 mg) in dry DMF (5ml), EDCI (250 mg, 1.25eq) and DMAP (130 mg,1eq) were added followed by addition of Sulfonamide (1eq). RM was stirred at RT for 4hrs. Solvent from the reaction mixture was evaporated. To the residue water was added and acidified with 6N HCl, solid precipitated out. Solid was filtered and dried. Crude solid was purified by flash chromatography eluating with 4-8% MeOH/DCM as solvent system to give pure product.
  • 14
  • [ 27350-01-2 ]
  • [ 87253-62-1 ]
  • [ 1602577-69-4 ]
YieldReaction ConditionsOperation in experiment
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In N,N-dimethyl-formamide; at 20.0℃; for 4.0h;Inert atmosphere; General procedure: In 25ml RB flask to a solution of Compound 9 (200 mg) in dry DMF (5ml), EDCI (250 mg, 1.25eq) and DMAP (130 mg,1eq) were added followed by addition of Sulfonamide (1eq). RM was stirred at RT for 4hrs. Solvent from the reaction mixture was evaporated. To the residue water was added and acidified with 6N HCl, solid precipitated out. Solid was filtered and dried. Crude solid was purified by flash chromatography eluating with 4-8% MeOH/DCM as solvent system to give pure product.
  • 15
  • [ 89599-01-9 ]
  • [ 87253-62-1 ]
  • [ 1602577-71-8 ]
YieldReaction ConditionsOperation in experiment
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In N,N-dimethyl-formamide; at 20.0℃; for 4.0h;Inert atmosphere; General procedure: In 25ml RB flask to a solution of Compound 9 (200 mg) in dry DMF (5ml), EDCI (250 mg, 1.25eq) and DMAP (130 mg,1eq) were added followed by addition of Sulfonamide (1eq). RM was stirred at RT for 4hrs. Solvent from the reaction mixture was evaporated. To the residue water was added and acidified with 6N HCl, solid precipitated out. Solid was filtered and dried. Crude solid was purified by flash chromatography eluating with 4-8% MeOH/DCM as solvent system to give pure product.
  • 16
  • [ 672-58-2 ]
  • [ 87253-62-1 ]
  • [ 1602577-72-9 ]
YieldReaction ConditionsOperation in experiment
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In N,N-dimethyl-formamide; at 20.0℃; for 4.0h;Inert atmosphere; General procedure: In 25ml RB flask to a solution of Compound 9 (200 mg) in dry DMF (5ml), EDCI (250 mg, 1.25eq) and DMAP (130 mg,1eq) were added followed by addition of Sulfonamide (1eq). RM was stirred at RT for 4hrs. Solvent from the reaction mixture was evaporated. To the residue water was added and acidified with 6N HCl, solid precipitated out. Solid was filtered and dried. Crude solid was purified by flash chromatography eluating with 4-8% MeOH/DCM as solvent system to give pure product.
  • 17
  • [ 503179-70-2 ]
  • [ 87253-62-1 ]
  • 5,7-dimethyl-N-(3-(trifluoromethoxy)phenylsulfonyl)-[1,2,4]triazolo[1,5-a]pyrimidine-2-carboxamide acetate salt [ No CAS ]
  • 18
  • [ 503179-70-2 ]
  • [ 87253-62-1 ]
  • [ 1602577-75-2 ]
YieldReaction ConditionsOperation in experiment
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In N,N-dimethyl-formamide; at 20.0℃; for 4.0h;Inert atmosphere; General procedure: In 25ml RB flask to a solution of Compound 9 (200 mg) in dry DMF (5ml), EDCI (250 mg, 1.25eq) and DMAP (130 mg,1eq) were added followed by addition of Sulfonamide (1eq). RM was stirred at RT for 4hrs. Solvent from the reaction mixture was evaporated. To the residue water was added and acidified with 6N HCl, solid precipitated out. Solid was filtered and dried. Crude solid was purified by flash chromatography eluating with 4-8% MeOH/DCM as solvent system to give pure product.
  • 19
  • [ 1513-45-7 ]
  • [ 87253-62-1 ]
  • [ 1602577-78-5 ]
YieldReaction ConditionsOperation in experiment
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In N,N-dimethyl-formamide; at 20.0℃; for 4.0h;Inert atmosphere; General procedure: In 25ml RB flask to a solution of Compound 9 (200 mg) in dry DMF (5ml), EDCI (250 mg, 1.25eq) and DMAP (130 mg,1eq) were added followed by addition of Sulfonamide (1eq). RM was stirred at RT for 4hrs. Solvent from the reaction mixture was evaporated. To the residue water was added and acidified with 6N HCl, solid precipitated out. Solid was filtered and dried. Crude solid was purified by flash chromatography eluating with 4-8% MeOH/DCM as solvent system to give pure product.
  • 20
  • [ 830-43-3 ]
  • [ 87253-62-1 ]
  • [ 1602577-79-6 ]
YieldReaction ConditionsOperation in experiment
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In N,N-dimethyl-formamide; at 20.0℃; for 4.0h;Inert atmosphere; General procedure: In 25ml RB flask to a solution of Compound 9 (200 mg) in dry DMF (5ml), EDCI (250 mg, 1.25eq) and DMAP (130 mg,1eq) were added followed by addition of Sulfonamide (1eq). RM was stirred at RT for 4hrs. Solvent from the reaction mixture was evaporated. To the residue water was added and acidified with 6N HCl, solid precipitated out. Solid was filtered and dried. Crude solid was purified by flash chromatography eluating with 4-8% MeOH/DCM as solvent system to give pure product.
  • 21
  • [ 90196-33-1 ]
  • [ 87253-62-1 ]
  • [ 1602577-81-0 ]
YieldReaction ConditionsOperation in experiment
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In N,N-dimethyl-formamide; at 20.0℃; for 4.0h;Inert atmosphere; General procedure: In 25ml RB flask to a solution of Compound 9 (200 mg) in dry DMF (5ml), EDCI (250 mg, 1.25eq) and DMAP (130 mg,1eq) were added followed by addition of Sulfonamide (1eq). RM was stirred at RT for 4hrs. Solvent from the reaction mixture was evaporated. To the residue water was added and acidified with 6N HCl, solid precipitated out. Solid was filtered and dried. Crude solid was purified by flash chromatography eluating with 4-8% MeOH/DCM as solvent system to give pure product.
  • 22
  • [ 1261609-36-2 ]
  • [ 87253-62-1 ]
  • [ 1602577-84-3 ]
YieldReaction ConditionsOperation in experiment
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In N,N-dimethyl-formamide; at 20.0℃; for 4.0h;Inert atmosphere; General procedure: In 25ml RB flask to a solution of Compound 9 (200 mg) in dry DMF (5ml), EDCI (250 mg, 1.25eq) and DMAP (130 mg,1eq) were added followed by addition of Sulfonamide (1eq). RM was stirred at RT for 4hrs. Solvent from the reaction mixture was evaporated. To the residue water was added and acidified with 6N HCl, solid precipitated out. Solid was filtered and dried. Crude solid was purified by flash chromatography eluating with 4-8% MeOH/DCM as solvent system to give pure product.
  • 23
  • [ 24010-56-8 ]
  • [ 87253-62-1 ]
  • N-(2,6-dimethylphenylsulfonyl)-5,7-dimethyl-[1,2,4]triazolo[1,5-a]pyrimidine-2-carboxamide acetate salt [ No CAS ]
  • 24
  • [ 24010-56-8 ]
  • [ 87253-62-1 ]
  • [ 1602577-86-5 ]
YieldReaction ConditionsOperation in experiment
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In N,N-dimethyl-formamide; at 20.0℃; for 4.0h;Inert atmosphere; General procedure: In 25ml RB flask to a solution of Compound 9 (200 mg) in dry DMF (5ml), EDCI (250 mg, 1.25eq) and DMAP (130 mg,1eq) were added followed by addition of Sulfonamide (1eq). RM was stirred at RT for 4hrs. Solvent from the reaction mixture was evaporated. To the residue water was added and acidified with 6N HCl, solid precipitated out. Solid was filtered and dried. Crude solid was purified by flash chromatography eluating with 4-8% MeOH/DCM as solvent system to give pure product.
  • 25
  • [ 87253-62-1 ]
  • [ 100-46-9 ]
  • [ 382612-50-2 ]
YieldReaction ConditionsOperation in experiment
24% With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In acetonitrile; at 20.0℃; for 12.0h;Inert atmosphere; 5,7-Dimethyl-[1,2,4]triazolo[1,5-a]pyrimidine-2-carboxylic acid (purchased from ChemBridge, http://www.chembridge.com; 75 mg, 0.37 mmol) and benzyl amine (49 mL, 0.44 mmol) were dissolved in 2 mL of acetonitrile and treated with EDC (107 mg, 0.56 mmol) and DMAP (136 mg, 1.11 mmol). The resulting solution was stirred for 12 h at room temperature. The reaction mixture was diluted with CH2Cl2, washed with 10% aqueous NaHCO3 solution (2x), water, 5% acetic acid solution (2x). The organic phase was collected, dried over sodium sulfate (Na2SO4), filtered and then concentrated in vacuo. Crude material obtained was purified by silica gel column chromatography with a 30% ethyl acetate : CH2Cl2 solvent system to give 25 mg (24%) of 11 as a white solid then recrystillized for x-ray diffraction. Mp 187-188 C; 1H NMR(300 MHz, CDCl3) delta 7.89 (bs, NH, 1H), 7.37-7.24 (m, 5H), 6.88 (s, 1H), 4.70 (d, J = 6.0 Hz, 2H), 2.85 (s, 3H), 2.66 (s, 3H). 13C NMR (126 MHz, CDCl3) delta 166.47, 159.38, 158.99, 155.12, 147.87, 137.61, 128.88, 128.08, 127.80, 112.06, 43.78, 25.34, 17.38. HRMS (EI), M+1 calcd. for C15H16N5O, 282.1349; found 282.1362. HPLC tR = 1.9 min.
  • 26
  • [ 87253-62-1 ]
  • [ 54535-00-1 ]
  • 27
  • [ 87253-62-1 ]
  • [ 1201687-89-9 ]
  • 28
  • [ 67-56-1 ]
  • [ 87253-62-1 ]
  • methyl 5,7-dimethyl-[1,2,4]triazolo[1,5-a]pyrimidine-2-carboxylate [ No CAS ]
YieldReaction ConditionsOperation in experiment
60% With sulfuric acid; at 60.0℃; for 16.0h;Inert atmosphere; a: Methyl 5,7-dimethyl-[1,2,4]triazolo[1,5-a]pyrimidine-2-carboxylateTo a stirred solution of 5,7-dimethyl-[l,2,4]triazolo[l,5-a]pyrimidine-2-carboxylic acid (750mg, 4.05mmol) at 25C in methanol (100 ml) under argon was added H2S04 (0.05ml). The mixture was then stirred at 60C for 16h. TLC shows the staring material was complete. The reaction mixture was then cooled and distilled the solvent was removed. After that, water (50 ml) was added to the reaction mixture, and neutral with the sodium bi carbonate. The aqueous phase was extracted with ethyl acetate. The combined organics were washed with brine (50 ml), dried over sodium sulphate, filtered and concentrated to get the crude. The crude was purified by column chromatography via amine silica gel eluted with 40% ethyl acetate in hexane to get methyl5,7-dimethyl-[l,2,4]triazolo[l,5-a]pyrimidine-2-carboxylate as an off white solid (500mg, 60%). MS: M/Z= 207 (M+H+).
 

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