PI3Kα Inhibitor

Umbralisib (TGR-1202) hydrochloride is an orally active, potent and selective dual PI3Kδ and casein kinase-1-ε (CK1ε) inhibitor, with EC₅₀ of 22.2 nM and 6.0 μM, respectively. Umbralisib hydrochloride exhibits unique immunomodulatory effects on chronic lymphocytic leukemia (CLL) T cells. Umbralisib hydrochloride can be used for haematological malignancies reseach.

Pilaralisib analogue (XL147 analogue) is a representative and selective PI3Kα inhibitor extracted from patent WO2012006552A1, Compound 147 in Table 1.

IPI-3063 is a potent and selective PI3K p110δ inhibitor with an IC₅₀ of 2.5 ± 1.2 nM.

FD223 is a potent and selective phosphoinositide 3-kinase delta (PI3Kδ) inhibitor. FD223 displays high potency (IC₅₀=1 nM) and good selectivity over other isoforms (IC₅₀s of 51 nM, 29 nM and 37 nM, respectively for α, β and γ). FD223 exhibits efficient inhibition of the proliferation of acute myeloid leukemia (AML) cell lines by suppressing p-AKT Ser473 thus causing G1 phase arrest during the cell cycle. FD223 has potential for the research of leukemia such as AML.

Vulolisib is a potent and orally active phosphatidylinositol 3-kinase (PI3K) inhibitor, with IC₅₀ values of 0.2 nM, 168 nM, 90 nM and 49 nM for PI3Kα, PI3Kβ, PI3Kγ and PI3Kδ, respectively. Antiproliferative and antineoplastic activity.

CHMFL-PI3KD-317 is a highly potent, selective and orally active PI3Kδ inhibitor, with an IC₅₀ of 6 nM, and exhibits over 10-1500 fold selectivity over other class I, II and III PIKK family isoforms, such as PI3Kα (IC₅₀, 62.6 nM), PI3Kβ (IC₅₀, 284 nM), PI3Kγ (IC₅₀, 202.7 nM), PIK3C2A (IC₅₀, >10000 nM), PIK3C2B (IC₅₀, 882.3 nM), VPS34 (IC₅₀, 1801.7 nM), PI4KIIIA (IC₅₀, 574.1 nM) and PI4KIIIB (IC₅₀, 300.2 nM). CHMFL-PI3KD-317 inhibits PI3Kδ-mediated Akt T308 phosphorylation in Raji cells, with an EC₅₀ of 4.3 nM. CHMFL-PI3KD-317 has antiproliferative effects on cancer cells.

(S)-GSK-F1 (Compound 28) is an inhibitor for type III phosphatidylinositol 4-kinase α (PI4KIIIα). (S)-GSK-F1 inhibits PI4Kα, PI4Kβ, PI4Kγ, PI3Kα, PI3Kβ and PI3Kδ with pIC₅₀ of 8.3, 6.0, 5.6, 5.6, 5.1 and 5.6, respectively. (S)-GSK-F1 exhibits anti-hepatitis C virus (HCV) activity through inhibition of HCV replication. (S)-GSK-F1 exhibits moderate pharmacokinetic characters in rat model.

WYE-687 is an ATP-competitive mTOR inhibitor with an IC₅₀ of 7 nM. WYE-687 concurrently inhibits activation of mTORC1 and mTORC2. WYE-687 also inhibits PI3Kα and PI3Kγ with IC₅₀s of 81 nM and 3.11 μM, respectively.

ETP-46321 is a potent and orally bioavailable PI3Kα and PI3Kδ inhibitor with K_iapps of 2.3 and 14.2 nM, respectively.

PI3Kα-IN-4 is a potent, selective and orally active inhibitor of PI3Kα, with an IC₅₀ of 1.8 nM. PI3Kα-IN-4 has antitumor activity.

(S)-PI3Kα-IN-4 is a potent inhibitor of PI3Kα, with an IC₅₀ of 2.3 nM. (S)-PI3Kα-IN-4 shows 38.3-, 4.25-, and 4.93-fold selectivity for PI3Kα over PI3Kβ, PI3Kδ, and PI3Kγ, respectively. (S)-PI3Kα-IN-4 can be used for the research of cancer.

PARP/PI3K-IN-1 (compound 15) is a potent PARP/PI3K inhibitor with pIC₅₀ values of 8.22, 8.44, 8.25, 6.54, 8.13, 6.08 for PARP-1, PARP-2, PI3Kα, PI3Kβ, PI3Kδ, and PI3Kγ, respectively. PARP/PI3K-IN-1 is a highly effective anticancer compound targeted against a wide range of oncologic diseases.

PI3K-IN-37 (Example 84.1) is a PI3K α/β/δ inhibitor with IC₅₀s of 6, 8, 4 nM, respectively. PI3K-IN-37 can also inhibit mTOR (IC₅₀=4 nM).

PI3K-IN-22 is a PI3Kα/mTOR dual kinase inhibitor. PI3K-IN-22 has IC₅₀s of 0.9, 0.6 nM for PI3Kα and mTOR, respectively. PI3K-IN-22 can be used for the research of cancer.

ETP-45658 is a potent PI3K inhibitor, with IC₅₀s of 22.0 nM, 39.8 nM, 129.0 nM and 717.3 nM for PI3Kα, PI3Kδ, PI3Kβ and PI3Kγ, respectively. ETP-45658 also can inhibit DNA-PK (IC₅₀=70.6 nM) and mTOR (IC₅₀=152.0 nM). ETP-45658 can be used for the research of cancer.

PKI-179 hydrochloride is a potent and orally active dual PI3K/mTOR inhibitor, with IC₅₀s of 8 nM, 24 nM, 74 nM, 77 nM, and 0.42 nM for PI3K-α, PI3K-β, PI3K-γ, PI3K-δ and mTOR, respectively. PKI-179 hydrochloride also exhibits activity over E545K and H1047R, with IC₅₀s of 14 nM and 11 nM, respectively. PKI-179 hydrochloride shows anti-tumor activity in vivo.

GS-9901 is a highly selective and orally active PI3Kδ inhibitor with an IC₅₀ of 1 nM. GS-9901 has ≥100 fold selectivity for PI3Kα (IC₅₀ of 750 nM), PI3Kβ (IC₅₀ of 100 nM) and PI3Kγ (IC₅₀ of 190 nM). GS-9901 can be used for the study of rheumatoid arthritis.

FD274 is a highly potent PI3K/mTOR dual inhibitor with IC₅₀s of 0.65 nM, 1.57 nM, 0.65 nM, 0.42 nM, and 2.03 nM against PI3Kα/β/γ/δ and mTOR, respectively. FD274 exhibits significant anti-proliferation of AML cell lines (HL-60 and MOLM-16). FD274 arrests HL-60 cell cycle at G1 phase and increases apoptosis. FD274 demonstrates dose-dependent inhibition of tumor growth in the HL-60 xenograft model. FD274 has the potential for acute myeloid leukemia research.

AS-041164 is a potent, selective and orally active PI3Kγ isoform inhibitor with an IC₅₀ of 70 nM. AS-041164 shows less activity against PI3Kα, PI3Kβ, and PI3Kδ (IC₅₀s of 240 nM, 1.45 μM, and 1.70 μM, respectively). AS-041164 has anti-inflammatory effects.

ON 146040 is a potent PI3Kα and PI3Kδ (IC₅₀≈14 and 20 nM, respectively) inhibitor. ON 146040 also inhibits Abl1 (IC₅₀<150 nM).