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Voxtalisib (XL765) Analogue PI3K inhibitor

Cat.No.S1523

Voxtalisib (SAR245409, XL765) Analogue is a dual inhibitor of mTOR/PI3K, mostly for p110γ with IC50 of 9 nM; also inhibits DNA-PK and mTOR. Phase 1/2.
Voxtalisib (XL765) Analogue PI3K inhibitor Chemical Structure

Chemical Structure

Molecular Weight: 599.66

Quality Control

Chemical Information, Storage & Stability

Molecular Weight 599.66 Formula

C31H29N5O6S

Storage (From the date of receipt)
CAS No. 1349796-36-6 Download SDF Storage of Stock Solutions

Synonyms SAR245409 Smiles CC1=C(C=C(C=C1)C(=O)NC2=CC=C(C=C2)S(=O)(=O)NC3=NC4=CC=CC=C4N=C3NC5=CC(=CC(=C5)OC)OC)OC

Solubility

In vitro
Batch:

DMSO : 15 mg/mL ( (25.01 mM) Moisture-absorbing DMSO reduces solubility. Please use fresh DMSO.)

Water : Insoluble

Ethanol : Insoluble

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Mass Concentration Volume Molecular Weight

In vivo
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Mechanism of Action

Targets/IC50/Ki
PI3Kγ [1]
9 nM
PI3Kα [1]
39 nM
PI3Kδ [1]
43 nM
PI3Kβ [1]
113 nM
DNA-PK [1]
150 nM
mTOR [1]
157 nM
In vitro
XL765 is active against class I PI3K (IC50 = 39, 113, 9 and 43 nM for p110α, β, γ and δ, respectively). XL765 also inhibits DNA-PK (IC50 = 150 nM) and mTOR (IC50 = 157 nM) but not XL-147 which shows IC50 values of > 15 μM. [1] XL765 treatment results in decreased cell viability in 13 PDA cell lines in a dose-dependent manner. XL765, a dual-target PI3K/mTOR inhibitor, inhibits cell growth and apoptosis in many more cell lines and at lower concentrations as compared to the PI3K-selective inhibitors XL147 and PIK90. The effect can be recapitulated by using combinations of single-targeted compounds. XL765 significantly reduces phosphorylation of the mTOR targets S6, S6K, and 4EBP1, which is associated with greater apoptosis induction rather than to PI3K inhibition alone. XL765 treatment causes accumulation of autophagosomes in MIAPaCa-2 cells, and results in significant dose-dependent AVO induction and LC3-II stimulation in MIAPaCa-2 cells stably expressing a LC3-GFP construct. [2]
In vivo
The combination of XL765 (30 mg/kg) with chloroquine (50 mg/kg) results in significant inhibition of BxPC-3 xenograft growth in mice models, while XL765 alone at the same dose has no inhibitory effect. [2] Oral administration of XL765 results in greater than 12-fold reduction in median tumor bioluminescence compared to control and improvement in median survival in nude mice implanted intracranially with GBM 39-luc cells. XL765 in combination with temozolomide (TMZ) yields a 140-fold reduction in median bioluminescence with a trend toward improvement in median survival compared with TMZ alone. [3]
References

Clinical Trial Information

(data from https://clinicaltrials.gov, updated on 2024-05-22)

NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT01596270 Completed
Neoplasm Malignant
Sanofi
June 2012 Phase 1
NCT01410513 Completed
Indolent Non-Hodgkin Lymphoma|Mantle Cell Lymphoma|Chronic Lymphocytic Leukemia
Sanofi
December 2011 Phase 1
NCT01240460 Completed
Glioblastoma|Astrocytoma Grade IV
Sanofi
January 2011 Phase 1

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