Pomalidomide Chemical Properties

Melting point:

318.5 - 320.5°

Boiling point:

582.9±45.0 °C(Predicted)

Density 

1.570±0.06 g/cm3(Predicted)

storage temp. 

2-8°C

solubility 

DMSO: ≥14mg/mL

pka

10.75±0.40(Predicted)

form 

powder

color 

yellow

Merck 

14,135

Stability:

Stable for 1 year from date of purchase as supplied. Solutions in DMSO may be stored at -20° for up to 1 month.

InChI

InChI=1S/C13H11N3O4/c14-7-3-1-2-6-10(7)13(20)16(12(6)19)8-4-5-9(17)15-11(8)18/h1-3,8H,4-5,14H2,(H,15,17,18)

InChIKey

UVSMNLNDYGZFPF-UHFFFAOYSA-N

SMILES

C1(=O)C2=C(C(N)=CC=C2)C(=O)N1C1CCC(=O)NC1=O

Safety Information

WGK Germany 

3

RTECS 

NR3397905

HS Code 

29251900

Hazardous Substances Data

19171-19-8(Hazardous Substances Data)

Pomalidomide Usage And Synthesis

Description

Pomalidomide inhibits LPS-induced TNF-α release with IC50 of 13 nM in PBMCs.

In vitro

Pomalidomide inhibits lipopolysaccharide (LPS) stimulated TNF-alpha release in human PBMC and in human whole blood with IC50 values of 13 nM and 25 nM, respectively. Pomalidomide inhibits the growth of T regulatory cells which is stimulated by IL-2 with an IC50 of ~1 μM. Treatment with Pomalidomide (6.4 nM-10 μM) increases the production of IL-2 in human peripheral blood T cells, and is slightly more potent in the CD4+ subset than in the CD8+ subset. Pomalidomide is significantly more potent than CC-5013 at elevating IL-2, IL-5, and IL-10 levels, but only slightly more potent than CC-5013 at elevating IFN-γ levels.
Pomalidomide enhances SEE and Raji cells induced AP-1 transcriptional activity in Jurkat cells in a dose-dependent manner, with a maximal enhancement of 4-fold at 1 μM. Exposure of Raji cells to various concentrations of Pomalidomide (2.5-40 μg/mL) for 48 hours leads to a significant decrease in cell proliferation and DNA synthesis. There is a reduction of ~40% compared to vehicle-treated controls.

In vivo

Pomalidomide enhances the antitumor effect of rituximab against B-cell lymphomas in severe combined immunodeficient mice. Administration of Pomalidomide in combination with rituximab, gives the mice a median survival period of 74 days compared with 58 days of CC5013/rituximab treatment and 45 days of rituximab nonotherapy. The synergistic effect of Pomalidomide and rituximab can be completely abrogated by depletion of NK cells, supporting the proposal that NK cell expansion is one mechanism by which Pomalidomide may augment rituximab antitumor activity.

Description

In February 2013, the US FDA approved pomalidomide (also known as CC4047) for the treatment of multiple myeloma (MM) in patients with disease progression after receiving other cancer therapeutics. Pomalidomide is a 4-amino analog of thalidomide with enhanced potency and an improved toxicity profile. Pomalidomide and thalidomide exert their effects by modulation of immunity, inhibition of angiogenesis, interference with the bone/tumor microenvironment, and inhibition of the cereblon protein. Pomalidomide potently inhibited in vitro proliferation in a variety of human MM cell lines, IC₅₀～10 nM, while thalidomide showed almost no inhibition up to 100 μM. In mouse MM tumor models, 50 mg/kg daily doses of pomalidomide resulted in marked inhibition of tumor growth after 15 days of treatment and complete regression in 3–6 weeks versus thalidomide-treated controls at the same dose. Pomalidomide is prepared by condensation of 4-nitrophthalic anhydride with 3-aminopiperidine-2,6-dione followed by catalytic hydrogenation of the nitro group.

Chemical Properties

Yellow Solid

Originator

Celgene Corporation (United States)

Uses

Pomalidomide is a thalidomide derivative, a potent inhibitor of TNF-α production. It is an antiinflammatory and antitumor agent used in the treatment of multiple myeloma.

Uses

Pomalidomide is a second generation immunomodulator, TNF-α inhibitor, and thalidomide analog. An inhibitor of LPS-induced TNFαrelease.

Uses

Pomalidomide inhibits LPS-induced TNF-α release with IC50 of 13 nM

Definition

ChEBI: An aromatic amine that is thalidomide substituted at position 4 on the isoindole ring system by an amino group. Used for the treatment of multiple myeloma in patients who failed to respond to previous therapies.

brand name

Pomalyst

Biochem/physiol Actions

Pomalidomide is an effective fetal hemoglobin (HbF) inducer that downregulates the key γ-globin repressors, SRY-box transcription factor 6 (SOX6), and BAF chromatin remodeling complex subunit (BCL11A).

Clinical Use

Treatment of multiple myeloma

Synthesis

First, condensation of commercially available 3-nitrophthalic anhydride (133) and L-glutamine in warm DMF gave nitrophthalimide 134. Although the authors from Celgene do not explicitly describe the racemization of the stereocenter derived from L-glutamine, scrambling of the stereocenter has been reported during this step under neutral conditions at elevated temperatures. Next, hydrogenative reduction of the nitro group furnished the anilinophthalimide 135, and this was followed by treatment with CDI in refluxing acetonitrile to secure the piperidone dione and ultimately furnish pomalidomide (XVIII) as the racemate in 87% overall yield from 134.

target

TNF-α

Drug interactions

Potentially hazardous interactions with other drugs
Antidepressants: concentration increased by fluvoxamine.

Metabolism

Mainly metabolised in the liver by the cytochrome P450 isoenzymes CYP1A2 and CYP3A4, with CYP2C19 and CYP2D6 playing a minor role.
Following a single oral administration of [14C]-pomalidomide (2 mg) to healthy subjects, approximately 73% and 15% of the radioactive dose was eliminated in urine and faeces, respectively, with approximately 2% and 8% of the dosed radiocarbon eliminated as pomalidomide in urine and faeces.

storage

Store at +4°C

References

1) Lopez-Girona?et al.?(2012),?Cereblon is direct protein target for immunomodulatory and antiproliferative activities of lenalidomide and pomalidomide; Leukemia,?26?2326 2) Zhu?et al.?(2013),?Molecular mechanism of action of immune-modulatory drugs thalidomide, lenalidomide and pomalidomide in multiple myeloma; Leukemia Lymphoma,?54?683 3) Donovan?et al.?(2018),?Thalidomide promotes degradation of SALL4, a transcription factor implicated in Duane Radial Ray syndrome; Elife,?7?e38430 4) Winter?et al.?(2015),?DRUG DEVELOPMENT. Phthalimide conjunction as a strategy for in vivo target protein degradation; Science,?348?1376 5) Lohbeck and Miller (2016),?Practical synthesis of a phthalimide-based Cereblon ligand to enable PROTAC development; Bioorg. Med. Chem. Lett.,?26?5260

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