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319460-85-0 Usage

FDA approved axitinib use of treating advanced kidney cancer

January 27, 2012, the FDA approved axitinib for the treatment of advanced kidney cancer (renal cell carcinoma) which other drugs unanswer . Inlyta is manufactured and sold by Pfizer,and is a oral pill taken twice a day. Renal cell carcinoma is a type of tumor originating from the tubular endothelial cells. Axitinib can prevent certain protein called kinases playing a role in tumor growth and metastasis . Axitinib is a small molecule tyrosine kinase inhibitor, effective against multiple targets, including VEGF receptors 1, 2 and 3. Dr. Richard Pazdur, hematology and oncology drugs office director of FDA Drug Evaluation and Research Centre, said: "This is the seven kind of drugs allowed treating metastatic or advanced renal cell carcinoma since 2005 . Overall, during this time ,record level of drug development has dramatically changed the treatment of metastatic renal cell carcinoma paradigm, and offers a variety of treatment options for patients. " In recent years, the drug has been approved for the treatment of kidney cancer include sorafenib (2005), sunitinib (2006), temsirolimus(2007), everolimus (2009), bevacizumab(2009) and pazopanib(2009). The above information is edited by the lookchem of Tian Ye.

Description

Different sources of media describe the Description of 319460-85-0 differently. You can refer to the following data:
1. Axitinib is a VEGFR inhibitor (IC50s = 1.2, 0.25, and 0.29 nM for VEGFR1, -2, and -3, respectively). It also inhibits c-Kit and PDGFRβ (IC50s = 1.7 and 1.6 nM, respectively). It inhibits VEGF-induced migration of and tube formation by human umbilical vein endothelial cells (HUVECs). Axitinib (1-100 mg/kg) reduces microvessel density, a marker of angiogenesis, and tumor growth in MV522 colon carcinoma, A375 melanoma, SN12C-GFP renal carcinoma, and U87 glioma mouse xenograft models in a dose-dependent manner. Formulations containing axitinib have been used in the treatment of renal cell carcinoma.
2. In January 2012, the US FDA approved axitinib (also referred to as AG-013736) for the treatment of advanced renal cell carcinoma (RCC) for patients who have not responded to prior therapy. Axitinib is a pan VEGF inhibitor and functions by binding to the intracellular tyrosine kinase catalytic domain of VEGF leading to blockade of signaling through this angiogenic pathway. Axitinib is50–400 times more potent for VEGF (enzyme Ki and cellular IC50s for VEGF 1, 2, and 3 are ~0.1 nM) than first-generation inhibitors like sorafenib and sunitinib. Axitinib also inhibits c-Kit and PDGFR(α/β) with enzyme Ki's of ~2 nM and was selective when tested against a broad panel of other protein kinases. Axitinib was discovered by a structure-based drug design approach and binds to the kinase domain of VEGF in a DFG-out conformation. Axitinib blocks VEGF-2 phosphorylation up to 7 h postdose in vivo and inhibits endothelial cell proliferation in xenograft tumors implanted in mice. Synthetic routes to axitinib employing a Migita coupling to form the diaryl sulfide and a Heck reaction to install the 2-styrylpyridine moiety have been reported.

Chemical Properties

Off-White Solid

Originator

Pfizer (United States)

Uses

Different sources of media describe the Uses of 319460-85-0 differently. You can refer to the following data:
1. A tyrosine kinase inhibitor; used in cancer therapy.
2. Axitinib (AG-013736) is a multi-target inhibitor of VEGFR1, VEGFR2, VEGFR3, PDGFRβ and c-Kit with IC50 of 0.1 nM, 0.2 nM, 0.1-0.3 nM, 1.6 nM and 1.7 nM, respectively.
3. Axitinib is a multi-target inhibitor of VEGFR1, VEGFR2, VEGFR3, PDGFRβ and c-Kit with IC50 of 0.1 nM, 0.2 nM, 0.1-0.3 nM, 1.6 nM and 1.7 nM, respectively.
4. Axitinib is a tyrosine kinase inhibitor. Axitinib is used in cancer therapy.

Definition

ChEBI: An indazole substituted at position 3 by a 2-(pyridin-2-yl)vinyl group and at position 6 by a 2-(N-methylaminocarboxy)phenylsulfanyl group. Used for the treatment of advanced renal cell carcinoma after failure of a first line systemic tr atment.

Brand name

Inlyta

Biochem/physiol Actions

Axitinib (AG-013736) is an orally available, potent (picomolar) and selective tyrosine kinase inhibitor that blocks VEGF receptors 1, 2 and 3. The drug blocks VEGF-mediated endothelial cell survival, tube formation, and downstream signaling through endothelial nitric oxide synthase, Akt and extracellular signal-regulated kinase.

Clinical Use

Sold under the brand name Inlyta? by Pfizer, Inc., axitinib was approved by the FDA in January 2012 for the treatment of advanced renal cell carcinoma (RCC), specifically after the failure of other systemic treatments. Axitinib slows cancer cell proliferation by inhibition of the vascular endothelial growth factor (VEGF)/VEGF receptor tyrosine (RTK) signaling pathway. In particular, axitinib is a potent inhibitor of VEGF/RTK 1-3, which selectively slows angiogenesis, vascular permeability, and blood flow in solid tumors.

Synthesis

Numerous patents and papers have been disclosed on the synthesis of axitinib, a recently published manuscript details the development of the manufacturing route, and this route is depicted in the scheme. The synthesis began with Migita coupling of commercial iodide 17 with thiophenol 18. Interestingly, this transformation’s efficiency relied upon attention to the number of equivalents of base and an inert atmosphere in the reaction vessel, conditions which minimized catalyst poisoning during the reaction. Without isolation, indazole 19 was iodinated to afford diarylthioether 20 in 85-90% yield over the two steps. Protection of the indazole within 20 as its acetamide preceeded a Heck reaction with 2-vinylpyridine, and then subsequent removal of the indazole protection followed by a series of recrystallizations yielded axitinib (IV) in a combined 62% yield over the final 4 steps.

Drug interactions

Potentially hazardous interactions with other drugs Antipsychotics: avoid with clozapine (increased risk of agranulocytosis); avoid with pimozide. Concomitant use with strong CYP3A4/5 inhibitors: avoid; however, if concomitant use cannot be avoided then reduce the dose of axitinib by approximately half; subsequent doses can be increased or decreased based on individual safety and tolerability; if CYP3A4/5 inhibitor is discontinued, then increase the axitinib dose used prior to initiation of the strong inhibitor after 3-5 half-lives of the inhibitor (strong CYP3A4/5 inhibitors include ketoconazole, itraconazole, clarithromycin, atazanavir, indinavir, ritonavir, saquinavir, and voriconazole).

Metabolism

Axitinib is metabolised primarily in the liver by CYP3A4/5 and to a lesser extent by CYP1A2, CYP2C19, and UGT1A1. Most of the drug is excreted via the faeces and urine as metabolites.

References

1) Hu-Lowe?et al.?(2008),?Nonclinical antiangiogenesis and antitumor activities of axitinib (AG-013736), an oral, potent and selective inhibitor of vascular endothelial growth factor receptor tyrosine kinases 1,2,3; Cancer Res.,?14?7272 2) Ma and Waxman (2008),?Modulation of the antitumor activity of metronomic cyclophosphamide by the angiogenesis inhibitor axitinib; Mol. Cancer Ther.,?7?79 3) Pemovska?et al.?(2015),?Axitinib effectively inhibits BCR-ABL1(T315I) with a distinct binding conformation; Nature,?519?102 4) Rixe?et al.?(2007),?Axitinib treatment in patients with cytokine-refractory metastatic renal-cell cancer; a phase II study; Lancet Oncol.,?8?975 5) Yuan?et al.?(2014),?Axitinib augments antitumor activity in renal cell carcinoma via STAT3-dependent reversal of myeloid-derived suppressor cell accumulation;?Biomed.Pharmacother.?68?751 6) Zhang?et al.?(2014),?Axitinib, a selective inhibitor of vascular endothelial growth factor receptor, exerts an anticancer effect in melanoma through promoting antitumor immunity;?Anticancer Drugs?25?204

Check Digit Verification of cas no

The CAS Registry Mumber 319460-85-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,1,9,4,6 and 0 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 319460-85:
(8*3)+(7*1)+(6*9)+(5*4)+(4*6)+(3*0)+(2*8)+(1*5)=150
150 % 10 = 0
So 319460-85-0 is a valid CAS Registry Number.
InChI:InChI=1/C22H18N4OS/c1-23-22(27)18-7-2-3-8-21(18)28-16-10-11-17-19(25-26-20(17)14-16)12-9-15-6-4-5-13-24-15/h2-14H,1H3,(H,23,27)(H,25,26)/b12-9+

319460-85-0 Well-known Company Product Price

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  • Sigma

  • (PZ0193)  Axitinib  ≥98% (HPLC)

  • 319460-85-0

  • PZ0193-5MG

  • 1,126.71CNY

  • Detail

319460-85-0SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 17, 2017

Revision Date: Aug 17, 2017

1.Identification

1.1 GHS Product identifier

Product name axitinib

1.2 Other means of identification

Product number -
Other names AG-013736 N-Methyl-2-((3-((1E)-2-(pyridin-2-yl)ethenyl)-1H-indazol-6-yl)sulfanyl)benzamide

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:319460-85-0 SDS

319460-85-0Synthetic route

(E)-N-methyl-2-{[3-(2-(pyridin-2-yl)ethenyl)-1-(tetrahydro-2H-pyran-2-yl)-1H-indazol-6-yl]thio}benzamide

(E)-N-methyl-2-{[3-(2-(pyridin-2-yl)ethenyl)-1-(tetrahydro-2H-pyran-2-yl)-1H-indazol-6-yl]thio}benzamide

axitinib
319460-85-0

axitinib

Conditions
ConditionsYield
With toluene-4-sulfonic acid In neat (no solvent) for 0.75h; Milling;99%
With toluene-4-sulfonic acid In methanol; water at 64℃; for 1 - 5h; Product distribution / selectivity;98%
With toluene-4-sulfonic acid In methanol; water at 65℃; for 4h; Reagent/catalyst; Inert atmosphere;95.4%
C22H18N4OS*C4H4O4

C22H18N4OS*C4H4O4

axitinib
319460-85-0

axitinib

Conditions
ConditionsYield
With 1,2-diaminopropan In 1-methyl-pyrrolidin-2-one at 40 - 70℃; for 1h;95%
6-[2-(methylcarbamoyl)phenylsulfanyl]-3-E-[2-(pyridin-2-yl)ethenyl]indazole ethylacetate solvate

6-[2-(methylcarbamoyl)phenylsulfanyl]-3-E-[2-(pyridin-2-yl)ethenyl]indazole ethylacetate solvate

axitinib
319460-85-0

axitinib

Conditions
ConditionsYield
In methanol; acetic acid at 60℃;92%
Stage #1: 6-[2-(methylcarbamoyl)phenylsulfanyl]-3-E-[2-(pyridin-2-yl)ethenyl]indazole ethylacetate solvate With toluene-4-sulfonic acid In ethanol at 82℃; for 14h;
Stage #2: With sodium hydrogencarbonate In ethanol; water at 20℃; for 2h;
6-[2-(methylcarbamoyl)phenylsulfanyl]-3-E-[2-(pyridin-2-yl)ethenyl]indazole p-toluene sulfonic acid salt

6-[2-(methylcarbamoyl)phenylsulfanyl]-3-E-[2-(pyridin-2-yl)ethenyl]indazole p-toluene sulfonic acid salt

axitinib
319460-85-0

axitinib

Conditions
ConditionsYield
In NaHCO3; ethyl acetate at 65℃;92%
2-vinylpyridine
100-69-6

2-vinylpyridine

2-((3-iodo-1H-indazol-6-yl)thio)-N-methylbenzamide
885126-34-1

2-((3-iodo-1H-indazol-6-yl)thio)-N-methylbenzamide

axitinib
319460-85-0

axitinib

Conditions
ConditionsYield
Stage #1: 2-((3-iodo-1H-indazol-6-yl)thio)-N-methylbenzamide With palladium diacetate; acetic anhydride; N-ethyl-N,N-diisopropylamine; 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene In 1-methyl-pyrrolidin-2-one at 25 - 50℃; Inert atmosphere;
Stage #2: 2-vinylpyridine In 1-methyl-pyrrolidin-2-one at 50 - 95℃; for 12h;
70.68%
With tris-(o-tolyl)phosphine; lithium bromide; palladium diacetate In 2,4-dichlorophenoxyacetic acid dimethylamine at 110℃; for 25h; Product distribution / selectivity; Heck Reaction;
With N,N,N',N'-tetramethyl-1,8-diaminonaphthalene; tris-(o-tolyl)phosphine; lithium bromide; palladium diacetate In DMA at 110℃; for 25h; Product distribution / selectivity; Inert atmosphere;
bromobenzene
108-86-1

bromobenzene

tert-Butyl acrylate
1663-39-4

tert-Butyl acrylate

axitinib
319460-85-0

axitinib

Conditions
ConditionsYield
With triethylamine In neat (no solvent) at 100℃; for 24h; Heck Reaction; Green chemistry;70%
2-mercapto-N-methylbenzamide
20054-45-9

2-mercapto-N-methylbenzamide

(E)-6-bromo-3-(2-(pyridin-2-yl)vinyl)-1H-indazole

(E)-6-bromo-3-(2-(pyridin-2-yl)vinyl)-1H-indazole

axitinib
319460-85-0

axitinib

Conditions
ConditionsYield
With palladium diacetate; N-ethyl-N,N-diisopropylamine; 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene In 1,4-dioxane for 48h; Inert atmosphere; Reflux;54%
2-vinylpyridine
100-69-6

2-vinylpyridine

axitinib
319460-85-0

axitinib

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: palladium diacetate; triethylamine; triphenylphosphine; tetrabutylammomium bromide; sodium bromide / neat (no solvent) / 1.5 h / Milling
2: tris-(dibenzylideneacetone)dipalladium(0); caesium carbonate; 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene / neat (no solvent) / 0.83 h / Milling
3: toluene-4-sulfonic acid / neat (no solvent) / 0.75 h / Milling
View Scheme
2-vinylpyridine
100-69-6

2-vinylpyridine

N-1 Boc 2-(3-iodo-1H-indazol-6-ylsulfanyl)-N-methyl-benzamide

N-1 Boc 2-(3-iodo-1H-indazol-6-ylsulfanyl)-N-methyl-benzamide

axitinib
319460-85-0

axitinib

Conditions
ConditionsYield
Stage #1: 2-vinylpyridine; N-1 Boc 2-(3-iodo-1H-indazol-6-ylsulfanyl)-N-methyl-benzamide for 2h; Heck Reaction;
Stage #2: With tris-(o-tolyl)phosphine; palladium diacetate In N,N-dimethyl-formamide at 100℃;
Stage #3: With trifluoroacetic acid Product distribution / selectivity;
1,2-bis(diphenylphosphino)ethane; 6-[2-(methylcarbamoyl)phenylsulfanyl]-3-E-[2-(pyridine-2-yl)ethenyl]indazole; mixture of

1,2-bis(diphenylphosphino)ethane; 6-[2-(methylcarbamoyl)phenylsulfanyl]-3-E-[2-(pyridine-2-yl)ethenyl]indazole; mixture of

axitinib
319460-85-0

axitinib

Conditions
ConditionsYield
In tetrahydrofuran at 20 - 65℃; for 18h; Purification / work up;
N-methyl-2-((1-(t-butoxycarbonyl)-3-((1E)-2-(2-pyridinyl)ethenyl)-1H-indazol-6-yl)thio)benzamide

N-methyl-2-((1-(t-butoxycarbonyl)-3-((1E)-2-(2-pyridinyl)ethenyl)-1H-indazol-6-yl)thio)benzamide

axitinib
319460-85-0

axitinib

Conditions
ConditionsYield
With trifluoroacetic acid In N,N-dimethyl-formamide
6-Iodo-1H-indazole
261953-36-0

6-Iodo-1H-indazole

axitinib
319460-85-0

axitinib

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1.1: 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene; sodium hydrogencarbonate; tris-(dibenzylideneacetone)dipalladium(0) / 1-methyl-pyrrolidin-2-one / 0.5 h / 25 °C / Inert atmosphere; Large scale
1.2: 3 h / 25 - 50 °C / Inert atmosphere; Large scale
2.1: iodine; potassium hydroxide / 1-methyl-pyrrolidin-2-one; water / 5.5 h / 25 °C / Inert atmosphere; Large scale
3.1: N-ethyl-N,N-diisopropylamine; palladium diacetate; 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene / 1-methyl-pyrrolidin-2-one / 50 °C / Inert atmosphere; Large scale
4.1: 1-methyl-pyrrolidin-2-one / 50 - 90 °C / Inert atmosphere; Large scale
5.1: 1,2-diaminopropan / water; tetrahydrofuran / 12.5 h / 50 °C / Inert atmosphere; Large scale
View Scheme
2-((1H-indazol-6-yl)thio)-N-methylbenzamide
944835-85-2

2-((1H-indazol-6-yl)thio)-N-methylbenzamide

axitinib
319460-85-0

axitinib

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: iodine; potassium hydroxide / 1-methyl-pyrrolidin-2-one; water / 5.5 h / 25 °C / Inert atmosphere; Large scale
2: N-ethyl-N,N-diisopropylamine; palladium diacetate; 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene / 1-methyl-pyrrolidin-2-one / 50 °C / Inert atmosphere; Large scale
3: 1-methyl-pyrrolidin-2-one / 50 - 90 °C / Inert atmosphere; Large scale
4: 1,2-diaminopropan / water; tetrahydrofuran / 12.5 h / 50 °C / Inert atmosphere; Large scale
View Scheme
2-((3-iodo-1H-indazol-6-yl)thio)-N-methylbenzamide
885126-34-1

2-((3-iodo-1H-indazol-6-yl)thio)-N-methylbenzamide

axitinib
319460-85-0

axitinib

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: N-ethyl-N,N-diisopropylamine; palladium diacetate; 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene / 1-methyl-pyrrolidin-2-one / 50 °C / Inert atmosphere; Large scale
2: 1-methyl-pyrrolidin-2-one / 50 - 90 °C / Inert atmosphere; Large scale
3: 1,2-diaminopropan / water; tetrahydrofuran / 12.5 h / 50 °C / Inert atmosphere; Large scale
View Scheme
N-methyl-2-((1-acetyl-3-((1E)-2-(2-pyridinyl)ethenyl)-1H-indazol-6-yl)thio)benzamide
1639137-80-6

N-methyl-2-((1-acetyl-3-((1E)-2-(2-pyridinyl)ethenyl)-1H-indazol-6-yl)thio)benzamide

axitinib
319460-85-0

axitinib

Conditions
ConditionsYield
With 1,2-diaminopropan In tetrahydrofuran; water at 50℃; for 12.5h; Inert atmosphere; Large scale;28.0 kg
2-mercapto-N-methylbenzamide
20054-45-9

2-mercapto-N-methylbenzamide

axitinib
319460-85-0

axitinib

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1.1: 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene; sodium hydrogencarbonate; tris-(dibenzylideneacetone)dipalladium(0) / 1-methyl-pyrrolidin-2-one / 0.5 h / 25 °C / Inert atmosphere; Large scale
1.2: 3 h / 25 - 50 °C / Inert atmosphere; Large scale
2.1: iodine; potassium hydroxide / 1-methyl-pyrrolidin-2-one; water / 5.5 h / 25 °C / Inert atmosphere; Large scale
3.1: N-ethyl-N,N-diisopropylamine; palladium diacetate; 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene / 1-methyl-pyrrolidin-2-one / 50 °C / Inert atmosphere; Large scale
4.1: 1-methyl-pyrrolidin-2-one / 50 - 90 °C / Inert atmosphere; Large scale
5.1: 1,2-diaminopropan / water; tetrahydrofuran / 12.5 h / 50 °C / Inert atmosphere; Large scale
View Scheme
(E)-6-nitro-3-[(2-pyridin-2-yl)vinyl]-1H-indazole

(E)-6-nitro-3-[(2-pyridin-2-yl)vinyl]-1H-indazole

axitinib
319460-85-0

axitinib

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1.1: methanesulfonic acid / tetrahydrofuran / 6 h / Reflux
2.1: sodiumsulfide nonahydrate / water; methanol / 60 °C
3.1: acetic acid; sulfuric acid; sodium nitrite / water / 4 h / -5 - 0 °C
3.2: 5.5 h / 0 °C
4.1: potassium carbonate; copper(l) iodide; 2-vinylpyridine / N,N-dimethyl-formamide / 12 h / 100 °C
5.1: water; hydrogenchloride; methanol / 6 h / 60 °C
View Scheme
(Ε)-6-nitro-3-[2-(pyridin-2-yl)ethenyl]-1-(tetrahydro-2H-pyran-2-yl)indazole
886230-75-7

(Ε)-6-nitro-3-[2-(pyridin-2-yl)ethenyl]-1-(tetrahydro-2H-pyran-2-yl)indazole

axitinib
319460-85-0

axitinib

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1.1: sodiumsulfide nonahydrate / water; methanol / 60 °C
2.1: acetic acid; sulfuric acid; sodium nitrite / water / 4 h / -5 - 0 °C
2.2: 5.5 h / 0 °C
3.1: potassium carbonate; copper(l) iodide; 2-vinylpyridine / N,N-dimethyl-formamide / 12 h / 100 °C
4.1: water; hydrogenchloride; methanol / 6 h / 60 °C
View Scheme
Multi-step reaction with 4 steps
1.1: ammonium chloride; iron / water; ethanol / 2 h / 50 °C
2.1: sodium nitrite; acetic acid / water / 2 h / 0 °C
2.2: 1.17 h / 0 °C
2.3: 2.08 h / 0 °C
3.1: bis[1,2-bis(diphenylphosphino)ferrocene]-palladium(0); caesium carbonate / N,N-dimethyl-formamide / 16 h / 80 °C / Inert atmosphere
4.1: toluene-4-sulfonic acid / water; methanol / 4 h / 65 °C / Inert atmosphere
View Scheme
(Ε)-6-amino-3-[2-(pyridin-2-yl)ethenyl]-1-(tetrahydro-2H-pyran-2-yl)indazole
886230-76-8

(Ε)-6-amino-3-[2-(pyridin-2-yl)ethenyl]-1-(tetrahydro-2H-pyran-2-yl)indazole

axitinib
319460-85-0

axitinib

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1.1: acetic acid; sulfuric acid; sodium nitrite / water / 4 h / -5 - 0 °C
1.2: 5.5 h / 0 °C
2.1: potassium carbonate; copper(l) iodide; 2-vinylpyridine / N,N-dimethyl-formamide / 12 h / 100 °C
3.1: water; hydrogenchloride; methanol / 6 h / 60 °C
View Scheme
Multi-step reaction with 3 steps
1.1: sodium nitrite; acetic acid / water / 2 h / 0 °C
1.2: 1.17 h / 0 °C
1.3: 2.08 h / 0 °C
2.1: bis[1,2-bis(diphenylphosphino)ferrocene]-palladium(0); caesium carbonate / N,N-dimethyl-formamide / 16 h / 80 °C / Inert atmosphere
3.1: toluene-4-sulfonic acid / water; methanol / 4 h / 65 °C / Inert atmosphere
View Scheme
6-nitroindazole
7597-18-4

6-nitroindazole

axitinib
319460-85-0

axitinib

Conditions
ConditionsYield
Multi-step reaction with 8 steps
1.1: potassium carbonate; iodine / N,N-dimethyl-formamide / 25 - 60 °C
2.1: potassium carbonate / N,N-dimethyl-formamide / 2.5 h / 60 °C
3.1: potassium carbonate; 1,10-Phenanthroline; copper(l) iodide / N,N-dimethyl-formamide / 8 h / 60 - 100 °C / Inert atmosphere
3.2: 60 °C
4.1: methanesulfonic acid / tetrahydrofuran / 6 h / Reflux
5.1: sodiumsulfide nonahydrate / water; methanol / 60 °C
6.1: acetic acid; sulfuric acid; sodium nitrite / water / 4 h / -5 - 0 °C
6.2: 5.5 h / 0 °C
7.1: potassium carbonate; copper(l) iodide; 2-vinylpyridine / N,N-dimethyl-formamide / 12 h / 100 °C
8.1: water; hydrogenchloride; methanol / 6 h / 60 °C
View Scheme
Multi-step reaction with 7 steps
1.1: 2,3-dicyano-5,6-dichloro-p-benzoquinone / acetonitrile / 2 h / 82 °C
2.1: sodium hydroxide; iodine / N,N-dimethyl-formamide / 14 h / 10 - 25 °C
2.2: 0.5 h / 20 °C
3.1: N-ethyl-N,N-diisopropylamine; tris-(o-tolyl)phosphine; palladium dichloride / N,N-dimethyl-formamide / 12 h / 100 °C / Inert atmosphere
4.1: ammonium chloride; iron / water; ethanol / 2 h / 50 °C
5.1: sodium nitrite; acetic acid / water / 2 h / 0 °C
5.2: 1.17 h / 0 °C
5.3: 2.08 h / 0 °C
6.1: bis[1,2-bis(diphenylphosphino)ferrocene]-palladium(0); caesium carbonate / N,N-dimethyl-formamide / 16 h / 80 °C / Inert atmosphere
7.1: toluene-4-sulfonic acid / water; methanol / 4 h / 65 °C / Inert atmosphere
View Scheme
(Ε)-6-iodo-3-[2-(pyridin-2-yl)ethenyl]-1-(tetrahydro-2H-pyran-2-yl)indazole

(Ε)-6-iodo-3-[2-(pyridin-2-yl)ethenyl]-1-(tetrahydro-2H-pyran-2-yl)indazole

2-mercapto-N-methylbenzamide
20054-45-9

2-mercapto-N-methylbenzamide

axitinib
319460-85-0

axitinib

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: potassium carbonate; copper(l) iodide; 2-vinylpyridine / N,N-dimethyl-formamide / 12 h / 100 °C
2: water; hydrogenchloride; methanol / 6 h / 60 °C
View Scheme
2,2'-dithiobenzoic acid
119-80-2

2,2'-dithiobenzoic acid

axitinib
319460-85-0

axitinib

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1: thionyl chloride / N,N-dimethyl-formamide / 4 h / Reflux
2: tetrahydrofuran / 11 h / 0 - 20 °C / pH 9 - 10
3: sodium tetrahydroborate / tetrahydrofuran / 0 - 30 °C
4: potassium carbonate; copper(l) iodide; 2-vinylpyridine / N,N-dimethyl-formamide / 12 h / 100 °C
5: water; hydrogenchloride; methanol / 6 h / 60 °C
View Scheme
2,2'-dithiodibenzoic acid dichloride
19602-82-5

2,2'-dithiodibenzoic acid dichloride

axitinib
319460-85-0

axitinib

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: tetrahydrofuran / 11 h / 0 - 20 °C / pH 9 - 10
2: sodium tetrahydroborate / tetrahydrofuran / 0 - 30 °C
3: potassium carbonate; copper(l) iodide; 2-vinylpyridine / N,N-dimethyl-formamide / 12 h / 100 °C
4: water; hydrogenchloride; methanol / 6 h / 60 °C
View Scheme
2,2'-dithiobis(N-methylbenzamide)
2527-58-4

2,2'-dithiobis(N-methylbenzamide)

axitinib
319460-85-0

axitinib

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: sodium tetrahydroborate / tetrahydrofuran / 0 - 30 °C
2: potassium carbonate; copper(l) iodide; 2-vinylpyridine / N,N-dimethyl-formamide / 12 h / 100 °C
3: water; hydrogenchloride; methanol / 6 h / 60 °C
View Scheme
3-iodo-6-nitro-1H-indazole
70315-70-7

3-iodo-6-nitro-1H-indazole

axitinib
319460-85-0

axitinib

Conditions
ConditionsYield
Multi-step reaction with 7 steps
1.1: potassium carbonate / N,N-dimethyl-formamide / 2.5 h / 60 °C
2.1: potassium carbonate; 1,10-Phenanthroline; copper(l) iodide / N,N-dimethyl-formamide / 8 h / 60 - 100 °C / Inert atmosphere
2.2: 60 °C
3.1: methanesulfonic acid / tetrahydrofuran / 6 h / Reflux
4.1: sodiumsulfide nonahydrate / water; methanol / 60 °C
5.1: acetic acid; sulfuric acid; sodium nitrite / water / 4 h / -5 - 0 °C
5.2: 5.5 h / 0 °C
6.1: potassium carbonate; copper(l) iodide; 2-vinylpyridine / N,N-dimethyl-formamide / 12 h / 100 °C
7.1: water; hydrogenchloride; methanol / 6 h / 60 °C
View Scheme
1-acetyl-3-iodine-6-nitroindazole

1-acetyl-3-iodine-6-nitroindazole

axitinib
319460-85-0

axitinib

Conditions
ConditionsYield
Multi-step reaction with 6 steps
1.1: potassium carbonate; 1,10-Phenanthroline; copper(l) iodide / N,N-dimethyl-formamide / 8 h / 60 - 100 °C / Inert atmosphere
1.2: 60 °C
2.1: methanesulfonic acid / tetrahydrofuran / 6 h / Reflux
3.1: sodiumsulfide nonahydrate / water; methanol / 60 °C
4.1: acetic acid; sulfuric acid; sodium nitrite / water / 4 h / -5 - 0 °C
4.2: 5.5 h / 0 °C
5.1: potassium carbonate; copper(l) iodide; 2-vinylpyridine / N,N-dimethyl-formamide / 12 h / 100 °C
6.1: water; hydrogenchloride; methanol / 6 h / 60 °C
View Scheme
1,3-dibromobenzene
108-36-1

1,3-dibromobenzene

axitinib
319460-85-0

axitinib

Conditions
ConditionsYield
Multi-step reaction with 6 steps
1: aluminum (III) chloride / 1 h / 100 °C / Inert atmosphere
2: potassium hydroxide / methanol; water / 1.5 h / 20 °C
3: hydrogenchloride / methanol; water / 12 h / 50 °C
4: copper(I) oxide / i-Amyl alcohol / 5 h / Inert atmosphere; Reflux
5: tetrabutyl ammonium fluoride / tetrahydrofuran / 12 h / 50 °C
6: N-ethyl-N,N-diisopropylamine; 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene; palladium diacetate / 1,4-dioxane / 48 h / Inert atmosphere; Reflux
View Scheme
2,4-dibromoacetophenone
33243-33-3

2,4-dibromoacetophenone

axitinib
319460-85-0

axitinib

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1: potassium hydroxide / methanol; water / 1.5 h / 20 °C
2: hydrogenchloride / methanol; water / 12 h / 50 °C
3: copper(I) oxide / i-Amyl alcohol / 5 h / Inert atmosphere; Reflux
4: tetrabutyl ammonium fluoride / tetrahydrofuran / 12 h / 50 °C
5: N-ethyl-N,N-diisopropylamine; 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene; palladium diacetate / 1,4-dioxane / 48 h / Inert atmosphere; Reflux
View Scheme
(E)-1-(2,4-dibromophenyl)-3-(pyridin-2-yl)prop-2-en-1-one

(E)-1-(2,4-dibromophenyl)-3-(pyridin-2-yl)prop-2-en-1-one

axitinib
319460-85-0

axitinib

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: hydrogenchloride / methanol; water / 12 h / 50 °C
2: copper(I) oxide / i-Amyl alcohol / 5 h / Inert atmosphere; Reflux
3: tetrabutyl ammonium fluoride / tetrahydrofuran / 12 h / 50 °C
4: N-ethyl-N,N-diisopropylamine; 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene; palladium diacetate / 1,4-dioxane / 48 h / Inert atmosphere; Reflux
View Scheme
C21H16BrN3O2S

C21H16BrN3O2S

axitinib
319460-85-0

axitinib

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: tetrabutyl ammonium fluoride / tetrahydrofuran / 12 h / 50 °C
2: N-ethyl-N,N-diisopropylamine; 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene; palladium diacetate / 1,4-dioxane / 48 h / Inert atmosphere; Reflux
View Scheme
axitinib
319460-85-0

axitinib

(2E)-but-2-enedioic acid
110-17-8

(2E)-but-2-enedioic acid

C22H18N4OS*C4H4O4

C22H18N4OS*C4H4O4

Conditions
ConditionsYield
With palladium In 1-methyl-pyrrolidin-2-one; ethanol at 65 - 75℃; for 1h; Solvent;99.9%
axitinib
319460-85-0

axitinib

acetyl chloride
75-36-5

acetyl chloride

N-methyl-2-((1-acetyl-3-((1E)-2-(2-pyridinyl)ethenyl)-1H-indazol-6-yl)thio)benzamide
1639137-80-6

N-methyl-2-((1-acetyl-3-((1E)-2-(2-pyridinyl)ethenyl)-1H-indazol-6-yl)thio)benzamide

Conditions
ConditionsYield
In dichloromethane at 20℃; for 16h; Cooling with ice;99%
With triethylamine In dichloromethane at 20℃; for 16h; Cooling with ice; Inert atmosphere;99%
axitinib
319460-85-0

axitinib

2-((tert-butyldimethylsilyl)oxy)ethyl (4-nitrophenyl) carbonate

2-((tert-butyldimethylsilyl)oxy)ethyl (4-nitrophenyl) carbonate

C31H36N4O4SSi

C31H36N4O4SSi

Conditions
ConditionsYield
With triethylamine In N,N-dimethyl-formamide at 20℃; for 16h;98%
2,3-dihydro-2H-furan
1191-99-7

2,3-dihydro-2H-furan

axitinib
319460-85-0

axitinib

N-methyl-2-((3-((E)-2-(2-pyridyl)vinyl)-1-(tetrahydrofuran-2-yl)-1H-indazol-6-yl)thio)benzamide

N-methyl-2-((3-((E)-2-(2-pyridyl)vinyl)-1-(tetrahydrofuran-2-yl)-1H-indazol-6-yl)thio)benzamide

Conditions
ConditionsYield
With toluene-4-sulfonic acid In N,N-dimethyl-formamide at 80℃; for 2h;96%
axitinib
319460-85-0

axitinib

p-nitrophenyl 13,13,14,14-tetramethyl-3,6,9,12-tetraoxa-13-silapentadec-1-yl carbonate

p-nitrophenyl 13,13,14,14-tetramethyl-3,6,9,12-tetraoxa-13-silapentadec-1-yl carbonate

N-methyl-2-((1-(13-hydroxy-1-oxo-2,5,8,11-tetraoxatridec-1-yl)-3-((1E)-2-(2-pyridinyl)ethenyl)-1H-indazol-6-yl)thio)benzamide hydrochloride

N-methyl-2-((1-(13-hydroxy-1-oxo-2,5,8,11-tetraoxatridec-1-yl)-3-((1E)-2-(2-pyridinyl)ethenyl)-1H-indazol-6-yl)thio)benzamide hydrochloride

Conditions
ConditionsYield
Stage #1: axitinib; p-nitrophenyl 13,13,14,14-tetramethyl-3,6,9,12-tetraoxa-13-silapentadec-1-yl carbonate With triethylamine In N,N-dimethyl-formamide at 20℃;
Stage #2: With hydrogenchloride; ethanol at 20℃; for 2h;
95.3%
axitinib
319460-85-0

axitinib

N-tert-butoxycarbonyl aspartic acid tert-butyl ester
34582-32-6

N-tert-butoxycarbonyl aspartic acid tert-butyl ester

N-methyl-2-((3-((E)-2-(2-pyridyl)vinyl)-1-(β-L-aspartyl)-1H-indazole-6-yl)thio)benzamide

N-methyl-2-((3-((E)-2-(2-pyridyl)vinyl)-1-(β-L-aspartyl)-1H-indazole-6-yl)thio)benzamide

Conditions
ConditionsYield
With diphenylphosphoranyl azide; triethylamine In N,N-dimethyl-formamide at 20℃; for 4h;93.6%
axitinib
319460-85-0

axitinib

N-tert-butoxycarbonyl aspartic acid tert-butyl ester
34582-32-6

N-tert-butoxycarbonyl aspartic acid tert-butyl ester

C31H31N5O6S

C31H31N5O6S

Conditions
ConditionsYield
With diphenyl phosphoryl azide; triethylamine In N,N-dimethyl-formamide at 20℃; for 4h;93.6%
axitinib
319460-85-0

axitinib

formaldehyd
50-00-0

formaldehyd

N-methyl-2-((3-((E)-2-(2-pyridyl)vinyl)-1-hydroxymethyl-1H-indazol-6-yl)thio)benzamide

N-methyl-2-((3-((E)-2-(2-pyridyl)vinyl)-1-hydroxymethyl-1H-indazol-6-yl)thio)benzamide

Conditions
ConditionsYield
With triethylamine In water; N,N-dimethyl-formamide at 0℃; for 3h;93%
axitinib
319460-85-0

axitinib

4-Nitrophenyl chloroformate
7693-46-1

4-Nitrophenyl chloroformate

C29H21N5O5S*(x)ClH

C29H21N5O5S*(x)ClH

Conditions
ConditionsYield
In tetrahydrofuran at 80℃; for 7h;92%
2-(2-(2-methoxyethoxy)ethoxy)ethyl (4-nitrophenyl) carbonate

2-(2-(2-methoxyethoxy)ethoxy)ethyl (4-nitrophenyl) carbonate

axitinib
319460-85-0

axitinib

N-methyl-2-((3-((E)-2-(2-pyridyl)vinyl)-1-((3,6,9-trioxadecane-1-yl)oxycarbonyl)-1H-indazol-6-yl)thio)benzamide

N-methyl-2-((3-((E)-2-(2-pyridyl)vinyl)-1-((3,6,9-trioxadecane-1-yl)oxycarbonyl)-1H-indazol-6-yl)thio)benzamide

Conditions
ConditionsYield
With triethylamine In N,N-dimethyl-formamide at 20℃;89%
With triethylamine In N,N-dimethyl-formamide at 20℃;89%
axitinib
319460-85-0

axitinib

(2-(2-((tert-butyldimethylsilyl)oxy)ethoxy)ethyl)(4-nitrophenyl) carbonate

(2-(2-((tert-butyldimethylsilyl)oxy)ethoxy)ethyl)(4-nitrophenyl) carbonate

N-methyl-2-((1-(2-(2-hydroxyethoxy)ethoxycarbonyl)-3-(( 1E)-2-(2-pyridinyl)ethenyl)-1H-indazol-6-yl)thio)benzamide hydrochloride

N-methyl-2-((1-(2-(2-hydroxyethoxy)ethoxycarbonyl)-3-(( 1E)-2-(2-pyridinyl)ethenyl)-1H-indazol-6-yl)thio)benzamide hydrochloride

Conditions
ConditionsYield
Stage #1: axitinib; (2-(2-((tert-butyldimethylsilyl)oxy)ethoxy)ethyl)(4-nitrophenyl) carbonate With triethylamine In N,N-dimethyl-formamide at 20℃;
Stage #2: With hydrogenchloride; ethanol at 20℃; for 2h;
87.8%
axitinib
319460-85-0

axitinib

di-tert-butyl dicarbonate
24424-99-5

di-tert-butyl dicarbonate

N-methyl-2-((1-(t-butoxycarbonyl)-3-((1E)-2-(2-pyridinyl)ethenyl)-1H-indazol-6-yl)thio)benzamide

N-methyl-2-((1-(t-butoxycarbonyl)-3-((1E)-2-(2-pyridinyl)ethenyl)-1H-indazol-6-yl)thio)benzamide

Conditions
ConditionsYield
With triethylamine In N,N-dimethyl-formamide at 20℃;87%
With triethylamine In N,N-dimethyl-formamide at 20℃;77%
With triethylamine In N,N-dimethyl-formamide for 1h;4.1 g
With triethylamine In N,N-dimethyl-formamide for 1h;4.1 g
With triethylamine In N,N-dimethyl-formamide for 1h;4.1 g
axitinib
319460-85-0

axitinib

t-butyl malonate
541-16-2

t-butyl malonate

N-methyl-2-((1-(t-butoxycarbonyl)-3-((1E)-2-(2-pyridinyl)ethenyl)-1H-indazol-6-yl)thio)benzamide

N-methyl-2-((1-(t-butoxycarbonyl)-3-((1E)-2-(2-pyridinyl)ethenyl)-1H-indazol-6-yl)thio)benzamide

Conditions
ConditionsYield
With triethylamine In N,N-dimethyl-formamide at 20℃;87%
axitinib
319460-85-0

axitinib

axitinib hydrobromic acid salt

axitinib hydrobromic acid salt

Conditions
ConditionsYield
With hydrogen bromide In isopropyl alcohol at 20 - 50℃;84%
axitinib
319460-85-0

axitinib

p-nitrophenyl 13,13,14,14-tetramethyl-3,6,9,12-tetraoxa-13-silapentadec-1-yl carbonate

p-nitrophenyl 13,13,14,14-tetramethyl-3,6,9,12-tetraoxa-13-silapentadec-1-yl carbonate

N-methyl-2-((1-(13,13,14,14-tetramethyl-3,6,9,12-tetraoxa-13-silapentadec-1-yl)-3-(( 1E)-2-(2-pyridinyl)ethenyl)-1H-indazol-6-yl)thio)benzamide

N-methyl-2-((1-(13,13,14,14-tetramethyl-3,6,9,12-tetraoxa-13-silapentadec-1-yl)-3-(( 1E)-2-(2-pyridinyl)ethenyl)-1H-indazol-6-yl)thio)benzamide

Conditions
ConditionsYield
With triethylamine In N,N-dimethyl-formamide at 20℃;83.1%
axitinib
319460-85-0

axitinib

axitinib hydrochloric acid salt

axitinib hydrochloric acid salt

Conditions
ConditionsYield
With hydrogenchloride In isopropyl alcohol at 20 - 50℃;83%
axitinib
319460-85-0

axitinib

1-dodecyl p-nitrophenyl carbonate
66398-02-5

1-dodecyl p-nitrophenyl carbonate

N-methyl-2-((1-dodecyloxycarbonyl-3-((1E)-2-(2-pyridinyl)ethenyl)-1H-indazol-6-yl)thio)benzamide

N-methyl-2-((1-dodecyloxycarbonyl-3-((1E)-2-(2-pyridinyl)ethenyl)-1H-indazol-6-yl)thio)benzamide

Conditions
ConditionsYield
With triethylamine In N,N-dimethyl-formamide at 20℃; for 3h;82.3%
With triethylamine In N,N-dimethyl-formamide at 20℃; for 3h;82.3%
axitinib
319460-85-0

axitinib

di-tert-butyl dicarbonate
24424-99-5

di-tert-butyl dicarbonate

6-((2-((t-butoxycarbonyl)(methyl)carbamoyl)phenyl)thio)-3-(2-(pyridin-2-yl)ethylenyl)-1H-indazol-1-carboxylic acid (E)-t-butyl ester

6-((2-((t-butoxycarbonyl)(methyl)carbamoyl)phenyl)thio)-3-(2-(pyridin-2-yl)ethylenyl)-1H-indazol-1-carboxylic acid (E)-t-butyl ester

Conditions
ConditionsYield
With dmap In dichloromethane at 25℃; for 16h;81.9%
axitinib
319460-85-0

axitinib

methanesulfonic acid
75-75-2

methanesulfonic acid

axitinib methanesulfonic acid salt

axitinib methanesulfonic acid salt

Conditions
ConditionsYield
In isopropyl alcohol at 20 - 50℃;81%
axitinib
319460-85-0

axitinib

pivaloyl chloride
3282-30-2

pivaloyl chloride

N-methyl-2-((1-pivaloyl-3-((1E)-2-(2-pyridinyl)ethenyl)-1H-indazol-6-yl)thio)benzamide

N-methyl-2-((1-pivaloyl-3-((1E)-2-(2-pyridinyl)ethenyl)-1H-indazol-6-yl)thio)benzamide

Conditions
ConditionsYield
With triethylamine In dichloromethane at 0 - 20℃; Inert atmosphere;81%
With triethylamine In dichloromethane at 20℃; Inert atmosphere; Cooling with ice;81%
axitinib
319460-85-0

axitinib

4-nitrophenyl (2,2,3,3-tetramethyl-4,7,10-trioxa-3-siladodecan-12-yl) carbonate

4-nitrophenyl (2,2,3,3-tetramethyl-4,7,10-trioxa-3-siladodecan-12-yl) carbonate

C35H44N4O6SSi

C35H44N4O6SSi

Conditions
ConditionsYield
With triethylamine In N,N-dimethyl-formamide81%
axitinib
319460-85-0

axitinib

N-methyl-2-((1-(2-(2-(tert-butyldimethylsilyloxy)ethoxy)ethoxycarbonyl)-3-((1E)-2-(2-pyridinyl)ethenyl)-1H-indazol-6-yl)thio)benzamide

N-methyl-2-((1-(2-(2-(tert-butyldimethylsilyloxy)ethoxy)ethoxycarbonyl)-3-((1E)-2-(2-pyridinyl)ethenyl)-1H-indazol-6-yl)thio)benzamide

Conditions
ConditionsYield
With triethylamine In N,N-dimethyl-formamide at 20℃;81%
axitinib
319460-85-0

axitinib

(2-(2-methoxyethoxy)ethyl) (4-nitrophenyl) carbonate
105108-59-6

(2-(2-methoxyethoxy)ethyl) (4-nitrophenyl) carbonate

N-methyl-2-((1-(1-oxo-2,5,8-trioxanayl)-3-((1E)-2-(2-pyridinyl)ethenyl)-1H-indazol-6-yl)thio)benzamide

N-methyl-2-((1-(1-oxo-2,5,8-trioxanayl)-3-((1E)-2-(2-pyridinyl)ethenyl)-1H-indazol-6-yl)thio)benzamide

Conditions
ConditionsYield
With triethylamine In N,N-dimethyl-formamide at 20℃; for 3h;80.6%
axitinib
319460-85-0

axitinib

4-nitrophenyl (2,2,3,3-tetramethyl-4,7,10-trioxa-3-siladodecan-12-yl) carbonate

4-nitrophenyl (2,2,3,3-tetramethyl-4,7,10-trioxa-3-siladodecan-12-yl) carbonate

N-methyl-2-((1-(2-(2-(2-hydroxyethoxy)ethoxy)ethoxycarbonyl)-3-((1E)-2-(2-pyridinyl)ethenyl)-1H-indazol-6-yl)thio)benzamide hydrochloride

N-methyl-2-((1-(2-(2-(2-hydroxyethoxy)ethoxy)ethoxycarbonyl)-3-((1E)-2-(2-pyridinyl)ethenyl)-1H-indazol-6-yl)thio)benzamide hydrochloride

Conditions
ConditionsYield
Stage #1: axitinib; 4-nitrophenyl (2,2,3,3-tetramethyl-4,7,10-trioxa-3-siladodecan-12-yl) carbonate With triethylamine In N,N-dimethyl-formamide at 20℃;
Stage #2: With hydrogenchloride; ethanol at 20℃; for 2h;
79.8%
axitinib
319460-85-0

axitinib

methyl (2-ethoxy)(4-nitrophenyl)carbonate
426264-10-0

methyl (2-ethoxy)(4-nitrophenyl)carbonate

N-methyl-2-((3-((E)-2-(2-pyridyl)vinyl)-1-((2-methoxy-1-ethyl)oxycarbonyl)-1H-indazol-6-yl)thio)benzamide

N-methyl-2-((3-((E)-2-(2-pyridyl)vinyl)-1-((2-methoxy-1-ethyl)oxycarbonyl)-1H-indazol-6-yl)thio)benzamide

Conditions
ConditionsYield
With triethylamine In N,N-dimethyl-formamide at 20℃; for 3h;79.8%
With triethylamine In N,N-dimethyl-formamide at 20℃; for 3h;79.8%
axitinib
319460-85-0

axitinib

4-nitrophenyl n-pentyl carbonate
67036-14-0

4-nitrophenyl n-pentyl carbonate

N-methyl-2-((3-((E)-2-(2-pyridyl)vinyl)-1-pentyloxycarbonyl-1H-indazol-6-yl)sulfanyl)benzamide

N-methyl-2-((3-((E)-2-(2-pyridyl)vinyl)-1-pentyloxycarbonyl-1H-indazol-6-yl)sulfanyl)benzamide

Conditions
ConditionsYield
With triethylamine at 20℃; for 3h;77%
With triethylamine In N,N-dimethyl-formamide at 20℃; for 3h;77%

319460-85-0Downstream Products

319460-85-0Relevant articles and documents

Axitinib: A Photoswitchable Approved Tyrosine Kinase Inhibitor

Schmidt, Dorian,Rodat, Theo,Heintze, Linda,Weber, Jantje,Horbert, Rebecca,Girreser, Ulrich,Raeker, Tim,Bu?mann, Lara,Kriegs, Malte,Hartke, Bernd,Peifer, Christian

, p. 2415 - 2426 (2018)

The goal of photopharmacology is to develop photoswitchable enzyme modulators as tunable (pro-)drugs that can be spatially and temporally controlled by light. In this context, the tyrosine kinase inhibitor axitinib, which contains a photosensitive stilbene-like moiety that allows for E/Z isomerization, is of interest. Axitinib is an approved drug that targets the vascular endothelial growth factor receptor 2 (VEGFR2) and is licensed for second-line therapy of renal cell carcinoma. The photoinduced E/Z isomerization of axitinib has been investigated to explore if its inhibitory effect can be turned “on” and “off”, as triggered by light. Under controlled light conditions, (Z)-axitinib is 43 times less active than that of the E isomer in an VEGFR2 assay. Furthermore, it was proven that kinase activity in human umbilical vein cells (HUVECs) was decreased by (E)-axitinib, but only weakly affected by (Z)-axitinib. By irradiating (Z)-axitinib in vitro with UV light (λ=385 nm), it is possible to switch it almost quantitatively into the E isomer and to completely restore the biological activity of (E)-axitinib. However, switching the biological activity off from (E)- to (Z)-axitinib was not possible in aqueous solution due to a competing irreversible [2+2]-photocycloaddition, which yielded a biologically inactive axitinib dimer.

Photoswitchable azo‐ and diazocine‐functionalized derivatives of the vegfr‐2 inhibitor axitinib

Heintze, Linda,Schmidt, Dorian,Rodat, Theo,Witt, Lydia,Ewert, Julia,Kriegs, Malte,Herges, Rainer,Peifer, Christian

, p. 1 - 23 (2020/11/30)

In this study, we aimed at the application of the concept of photopharmacology to the approved vascular endothelial growth factor receptor (VEGFR)‐2 kinase inhibitor axitinib. In a previous study, we found out that the photoisomerization of axitinib’s stilbene‐like double bond is unidirectional in aqueous solution due to a competing irreversible [2+2]‐cycloaddition. Therefore, we next set out to azologize axitinib by means of incorporating azobenzenes as well as diazocine moieties as photoresponsive elements. Conceptually, diazocines (bridged azobenzenes) show favorable photoswitching properties compared to standard azobenzenes because the thermodynamically stable Z‐isomer usually is bioinactive, and back isomerization from the bioactive E‐isomer occurs thermally. Here, we report on the development of different sulfur– diazocines and carbon–diazocines attached to the axitinib pharmacophore that allow switching the VEGFR‐2 activity reversibly. For the best sulfur–diazocine, we could verify in a VEGFR‐2 kinase assay that the Z‐isomer is biologically inactive (IC50 >> 10,000 nM), while significant VEGFR‐2 inhibition can be observed after irradiation with blue light (405 nm), resulting in an IC50 value of 214 nM. In summary, we could successfully develop reversibly photoswitchable kinase inhibitors that exhibit more than 40‐fold differences in biological activities upon irradiation. Moreover, we demonstrate the potential advantage of diazocine photoswitches over standard azobenzenes.

Method for preparing axitinib and intermediates thereof

-

, (2018/05/30)

The invention discloses a method for preparing axitinib and intermediates thereof. A chemical name of the axitinib is N-methyl-2-[(3-(1E-2-(pyridine-2-yl)ethylene)-1H-indazole-6-yl)sulfur]benzamide, and a chemical formula of the axitinib is C22H18N4OS. The preparation process disclosed by the invention is simple in process, readily available in raw materials, economic, environmentally friendly, high in product yield and product purity, contributes to realizing industrialization, reduces the production cost and is suitable for mass production. The provided novel intermediates and the preparation method thereof have significance on the economic technology of the axitinib.

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