Thursday, 8 October 2026

Lecufexor

 

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Lecufexor

CAS 2247972-61-6

MF C32H21Cl3N2O5 MW619.88

7-Benzoxazolecarboxylic acid, 5-[2-[2-chloro-4-[[5-cyclopropyl-3-(2,6-dichlorophenyl)-4-isoxazolyl]methoxy]phenyl]ethynyl]-2-cyclopropyl-

5-[2-[2-chloro-4-[[5-cyclopropyl-3-(2,6-dichlorophenyl)-1,2-oxazol-4-yl]methoxy]phenyl]ethynyl]-2-cyclopropyl-1,3-benzoxazole-7-carboxylic acid

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farnesoid X receptor (FXR) agonist, K3K2F4N8BY, ID 119031166, ID 166

Lecufexor is a farnesoid X receptor (FXR) agonist.

Lecufexor (also known as ID119031166 or ID166) is a potent, selective, and non-steroidal farnesoid X receptor (FXR) agonist. It is primarily studied for its potential in treating liver diseases, particularly Non-Alcoholic Steatohepatitis (NASH) and liver fibrosis. 

Key Characteristics and Research

  • Mechanism of Action: It acts as an agonist for the farnesoid X receptor, which is a key regulator of bile acid homeostasis, lipid metabolism, and glucose metabolism.
  • Therapeutic Potential: Research indicates it can improve NASH and liver fibrosis by modulating the gut-liver axis.
  • Safety Profile: Unlike some other FXR agonists, Lecufexor is designed to be intestine-preferential and does not show activity against potential itch receptors (like MRGPRX4), which may help avoid common side effects like pruritus (itching).
  • 

Farnesoid X receptor(FXR, NR1H4)is a member of the nuclear hormone receptor superfamily of ligand-activated transcription factors. FXR is highly expressed in the liver, intestine, kidney, adrenal glands, white adipose tissue and in induced during adipocyte differentiation  in vitro . (Cariu B. et al., J. Biol. Chem., 2006, 16, 11039-11049)

Not only FXR regulates various physiological processed such as modulates regulrated of bile acid(BA) regulation, lipids/glucose metabolism, inflammation/fibrosis, but recently it has also been linked to the pathology of FXR receptors

This nuclear receptor is the intracellular bile acid ¡“sensor” and its major physiological role is to protect liver cells from the deleterious effect of bile acids(BA) overload. Intestine is the tissue expressing the first FXR target gene identified. Indeed IBAB-P is expressed in enterocytes and binds bile acids, thus limiting the free concentration of BA intracellularly and consequently their toxicity.(Makishima M, et al., Science, 1999, 284(5418), 1362-1365). FXR is highly expressed in the liver and regulates key genes involved in BA synthesis, metabolism and transport including CYP7A1, UGT2B4, BSEP, MDR3, MRP2, ASBT, NTCP, OST α and OST β in humans. One effect of FXR activation is down regulation of CYP7A1 and thus bile acid synthesis; this is accomplished through induction of SHP(Small Heterodimer Partner) which then represses CYP7A1 transcription(Claude T, et al., Arterioscler. Thromb. Vasc. Biol., 2005, 25, 2020-2031). Altered expression or malfunction of these genes has been described in patients with cholestatic liver disease. FXR agonist 6-ethyl-chenodeoxycholic acid(6EtCDCA)was found to fully reverse the impairment of bile flow and to protect the hepatocytes against liver cell injury caused by the cytotoxic lithocholic acid.(Pelliciari R, et al., J. Med. Chem., 2002, 45(17), 3569-3572).

SYN

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PAT

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 Manufacturing Example 1. Preparation of 5-((2-chloro-4-((5-cyclopropyl-3-(2,6-dichlorophenyl)isoxazol-4-yl)methoxy)phenyl)ethynyl)-2-cyclopropylbenzo[d]oxazole-7-carboxylic acid (compound of chemical formula 1)[288] [289]

Step 1: Preparation of methyl 5-((2-chloro-4-((5-cyclopropyl-3-(2,6-dichlorophenyl)isoxazol-4-yl)methoxy)phenyl)ethynyl)-2-cyclopropylbenzo[d]oxazole-7-carboxylate[290] [291]4-((3-Chloro-4-ethynylphenoxy)methyl)-5-cyclopropyl-3-(2,6-dichlorophenyl)isoxazole (182 mg, 0.43 mmol), methyl 5-bromo-2-cyclopropylbenzo[d]oxazole-7-carboxylate (117 mg, 0.40 mmol), bis(triphenylphosphine)palladium(II) dichloride (PdCl 

2 (PPh 

3 ) 

2 , 14 mg, 0.02 mmol), copper(I) iodide (3.8 mg, 0.02 mmol), and triethylamine (67 μl, 0.48 mmol) were added, and the mixture was stirred at 80°C for 4 hours. The reaction mixture was diluted with ethyl acetate and washed with distilled water. Dried over magnesium sulfate, filtered, concentrated, and purified by silica gel chromatography to obtain the intermediate compound methyl 5-((2-chloro-4-((5-cyclopropyl-3-(2,6-dichlorophenyl)isoxazol-4-yl)methoxy)phenyl)ethynyl)-2-cyclopropylbenzo[d]oxazole-7-carboxylate (121 mg, 48%). [292]

1 H-NMR (CDCl 

3 , 400MHz): 8.06(d, 1H), 7.90(d, 1H), 7.43-7.40(m, 3H), 7.36-7.31(m, 1H), 6.88(d, 1H), 6.69(dd,1H), 4.82(s, 2H), 4.00(s, 3H), 2.32-2.24(m, 1H), 2.20-2.12(m, 1H), 1.38-1.33(m, 2H), 1.32-1.27(m, 2H), 1.26-1.23(m, 2H), 1.19-1.15(m, 2H). [293] [294]

Step 2: Preparation of 5-((2-chloro-4-((5-cyclopropyl-3-(2,6-dichlorophenyl)isoxazol-4-yl)methoxy)phenyl)ethynyl)-2-cyclopropylbenzo[d]oxazole-7-carboxylic acid[295] [296]The intermediate compound (120 mg, 0.19 mmol) prepared in the above step 1 and lithium hydroxide (79.4 mg, 1.9 mmol) were combined in the same manner as in step 6 of Example 1 to obtain the target compound (102 mg, 87.4%). [297]

1 H-NMR (DMSO, 400MHz): 13.6(br s, 1H), 7.99(d, 1H), 7.97(d, 1H), 7.87-7.62(m, 2H), 7.57-7.55(m, 2H), 7.09(d, 1H), 6.83(dd, 1H), 4.98(s, 2H), 2.39-2.30(m, 1H), 1.26-1.12(m, 8H).

PAT

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......

///////lecufexor, farnesoid X receptor (FXR) agonist, K3K2F4N8BY, ID 119031166, ID 166

#lecufexor, #farnesoid X receptor (FXR) agonist, #K3K2F4N8BY, #ID 119031166, #ID 166



Sunday, 4 October 2026

Lutetium (177Lu) tezuvotide tetraxetan

 

Lutetium (177Lu) tezuvotide tetraxetan

CAS2613239-73-7

MF C60H92F177LuN12O23Si , 1573.5 g/mol

2-[4-[2-[[(2R)-1-[[(1R)-1-carboxy-5-[[4-[[(4R)-4-carboxy-4-[[(4S)-4-carboxy-4-[[(1S)-1,3-dicarboxypropyl]carbamoylamino]butanoyl]amino]butyl]amino]-4-oxobutanoyl]amino]pentyl]amino]-3-[[4-[ditert-butyl(fluoro)silyl]benzoyl]amino]-1-oxopropan-2-yl]amino]-2-oxoethyl]-7,10-bis(carboxylatomethyl)-1,4,7,10-tetrazacyclododec-1-yl]acetate;lutetium-177(3+)

antineoplastic, 177LU-RHPSMA-10.1, RHPSMA-10.1 LUTETIUM LU-177, FJ9Z7Y8MRW

Lutetium (177Lu) tezuvotide tetraxetan ($^{177}$Lu-rhPSMA-10.1) is an experimental radioligand therapy, developed by Bracco, that targets prostate-specific membrane antigen (PSMA) to treat metastatic castration-resistant prostate cancer. It uses a radiohybrid (rh) PSMA molecule, designed to have high binding affinity to PSMA-positive cancer cells and deliver targeted beta-minus radiation. 

Key details:

  • Mechanism: It binds to PSMA-expressing cells, leading to DNA damage and tumor cell death.
  • Target: Prostate-specific membrane antigen (PSMA)-positive metastatic castration-resistant prostate cancer.
  • Distinction: It is distinct from the FDA-approved ${177}$Lu-vipivotide tetraxetan (Pluvicto), though it is part of the same class of PSMA-targeted radiopharmaceutical agents.
  • Status: It has been tested in clinical trials as a potential therapy for advanced prostate cancer, including studies evaluating its efficacy and safety. 

It is important to distinguish between the various PSMA-targeted agents, such as vipivotide tetraxetan, which is approved for use. 

Lutetium Lu 177 Tezuvotide Tetraxetan is a radioconjugate composed of PSMA-10.1, a prostate-specific membrane antigen (PSMA)-targeting ligand and radiolabeled with the beta-emitting radioisotope lutetium Lu 177 (177Lu), with potential antineoplastic activity against PSMA-expressing tumor cells. Upon intravenous administration, lutetium Lu 177 tezuvotide tetraxetan targets and binds to PSMA-expressing tumor cells. Upon binding, PSMA-expressing tumor cells are destroyed by 177Lu through the specific delivery of beta particle radiation. PSMA, a tumor-associated antigen (TAA) and type II transmembrane protein, is expressed on the membrane of prostatic epithelial cells and overexpressed on prostate tumor cells as well as a variety of other solid tumors.

An open-label, multicentre, integrated Phase 1 & 2 study to evaluate the safety, tolerability, radiation dosimetry and anti-tumour activity of Lutetium (177Lu) rhPSMA-10.1 injection in men with metastatic castrate-resistant prostate cancer

EudraCT: 2022-002407-37

Phase: Phase 2

Status: Trial now transitioned

Date: 2023-05-22

PAT

https://patents.google.com/patent/WO2024121722A1/en

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//////////////lutetium (177Lu) tezuvotide tetraxetan, antineoplastic, 177LU-RHPSMA-10.1, RHPSMA-10.1 LUTETIUM LU-177, FJ9Z7Y8MRW

#lutetium (177Lu) tezuvotide tetraxetan, #antineoplastic, #177LU-RHPSMA-10.1, #RHPSMA-10.1 LUTETIUM LU-177, #FJ9Z7Y8MRW

Luvometinib

 

Luvometinib

CAS 2739690-43-6

MF C26H22F2IN5O4S MW665.5 g/mol

CHINA 2025, APPROVALS 2025

N-[3-[6-cyclopropyl-3-fluoro-4-(2-fluoro-4-iodoanilino)-1-methyl-2,5-dioxopyrido[2,3-d]pyridazin-8-yl]phenyl]cyclopropanesulfonamide

N-{3-[6-cyclopropyl-3-fluoro-4-(2-fluoro-4-iodoanilino)-1-methyl-2,5-dioxo-1,2,5,6-tetrahydropyrido[2,3-
d]pyridazin-8-yl]phenyl}cyclopropanesulfonamide
mitogen-activated protein kinase (MEK) inhibitor, antineoplastic, FCN 159, FCN-159, B2DYT4V89X

Luvometinib is a drug for the treatment of various types of cancer. It is a selective, orally administered inhibitor of mitogen-activated protein kinase kinases 1 and 2 (MEK1/MEK2), developed by Fosun Pharma for the treatment of rare malignancies, especially those driven by abnormal abnormal mitogen-activated protein kinase (MAPK) activation.[1][2]

In May 2025, it was approved in China for the treatment of histiocytic neoplasms such as Langerhans cell histiocytosis (LCH) and the genetic disease neurofibromatosis type 1 (NF1).[2]

Luvometinib is an orally bioavailable inhibitor of mitogen-activated protein kinase kinase (MAP2K, MAPK/ERK kinase, or MEK) 1 and 2, with potential antineoplastic activity. Upon administration, luvometinib selectively binds to and inhibits the activity of MEK1 and MEK2, preventing the activation of MEK1/2-dependent effector proteins and transcription factors, which may result in the inhibition of growth factor-mediated cell signaling and tumor cell proliferation. MEK1/2 are dual-specificity threonine/tyrosine kinases that play key roles in the activation of the RAS/RAF/MEK/ERK pathway that regulates cell growth. This pathway is often dysregulated in a variety of tumor cell types through BRAF, KRAS and NRAS mutations.

Luvometinib is a small molecule drug. The usage of the INN stem '-tinib' in the name indicates that Luvometinib is a tyrosine kinase inhibitor. Luvometinib is under investigation in clinical trial NCT07004075 (FCN-159 Monotherapy Versus Chemotherapy by Investigator's Choice in Pediatric Low-grade Glioma Patients With BRAF Alteration). Luvometinib has a monoisotopic molecular weight of 665.04 Da.

SYN

Example 6 [WO2014169843]

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2014169843&_cid=P22-MLD4HW-79323-1

Example 8

N-(3-(6-allyl-3-ƒluoro-4-(2-ƒluoro-4-iodophenylamino)-1-methyl-2,5-dioxo-1,2,5,6- tetrahydropyrido[2,3-d]pyridazin-8-yl)phenyl)cyclopropanesulƒonamide (8)

The title compound 8 was prepared following the same procedure as described for Example 5 by substituting methanesulfonyl chloride with cyclopropanesulfonyl chloride. MS-ESI (m/z): 666 [M + 1]+.

PAT

https://patentscope.wipo.int/search/en/detail.jsf?docId=EP159733179&_cid=P22-MLD4C4-76451-1

Example 8

N-(3-(6-cyclopropyl-3-fluoro-4-(2-fluoro-4-iodophenylamino)-1-methyl-2,5-dioxo-1,2,5,6-tetrahydropyrido[2,3-d]pyridazin-8-yl)phenyl)cyclopropanesulfonamide (8)

[0136]  The title compound 8 was prepared following the same procedure as described for Example 5 by substituting methanesulfonyl chloride with cyclopropanesulfonyl chloride. MS-ESI (m/z): 666 [M + 1] +.

PAT

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References

  1.  Cheng Y, Tian H (2017). "Current Development Status of MEK Inhibitors". Molecules. 22 (10). Basel, Switzerland: 1551. doi:10.3390/molecules22101551. PMC 6151813. PMID 28954413.
  2.  Keam SJ (2025). "Luvometinib: First Approval". Drugs. 85 (9): 1177–1183. doi:10.1007/s40265-025-02217-6. PMID 40751881.
Clinical data
Trade names复迈宁 (Fu Mainin)
Other namesFCN-159
Routes of
administration
Oral
Identifiers
IUPAC name
CAS Number2739690-43-6
PubChem CID135210935
IUPHAR/BPS13495
UNIIB2DYT4V89X
Chemical and physical data
FormulaC26H22F2IN5O4S
Molar mass665.45 g·mol−1
3D model (JSmol)Interactive image
SMILES
InChI

//////////luvometinib, CHINA 2025, APPROVALS 2025, antineoplastic, FCN 159, FCN-159, B2DYT4V89X, ANAX, PTFEON, ADVECT, BLUE JET

#luvometinib, #CHINA 2025, #APPROVALS 2025, #antineoplastic, #FCN 159, #FCN-159, #B2DYT4V89X, #ANAX, #PTFEON, #ADVECT, #BLUE JET

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Maritupirdine

 

Maritupirdine

CAS 1025725-91-0

MF C21H24N2 MW304.4 g/mol

2,3,4,5-TETRAHYDRO-2,8-DIMETHYL-5-PHENETHYL-1H-PYRIDO(4,3-B)INDOLE

2,8-dimethyl-5-(2-phenylethyl)-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole
serotonin receptor antagonist, antidepressant, AVN-101, AVN 101, CD 008 0045, 6MHR5IV28S

  • OriginatorChemDiv
  • DeveloperAllaChem; Avineuro Pharmaceuticals; ChemDiv
  • ClassAntidementias; Indoles; Neuroprotectants; Pyridines; Small molecules
  • Mechanism of ActionAdrenergic receptor antagonists; Dopamine receptor antagonists; Histamine receptor antagonists; Serotonin 6 receptor antagonists
  • Phase IIAlzheimer's disease; Anxiety disorders
  • 27 Sep 2022No development reported - Phase-II for Anxiety disorders in Russia (PO)
  • 22 Dec 2020Chemical structure information added
  • 22 Oct 2020Avineuro Pharmaceuticals and Avineuro Pharmaceuticals plans a phase III trial in Anxiety disorders in December 2020 (PO, Capsules) (NCT04598867)

MARITUPIRDINE is a small molecule drug with a maximum clinical trial phase of II and has 1 investigational indication.

Maritupirdine (developmental code name AVN-101), a close structural analogue of latrepirdine, is a selective 5-HT6 receptor antagonist which is under development by Avineuro Pharmaceuticals for the treatment of Alzheimer's disease and anxiety disorders.[1][2][3] As of November 2013, it was in phase II clinical trials for these indications.[2][3][4][needs update]

It was approved in Russia on May 31, 2023 under the brand name Aviandr for the treatment of generalized anxiety disorder, mild-to-moderate anxiety conditions (stress reactions and adjustment disorders) and anxiety after COVID-19.[5]

SYN

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2008123796&_cid=P22-MLEJYG-07531-1

PAT

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2009055828&_cid=P22-MLEJYG-07531-1

REF

PAT

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References

  1.  Ivachtchenko V, Ivanenkov Y (2013). "Small Molecule 5-HT6R Ligands: A Comprehensive Insight into their Selectivity and Activity". Current Bioactive Compounds. 9 (1): 64–100. doi:10.2174/1573407211309010007. ISSN 1573-4072.
  2.  Griebel G, Holmes A (September 2013). "50 years of hurdles and hope in anxiolytic drug discovery". Nature Reviews. Drug Discovery. 12 (9): 667–87. doi:10.1038/nrd4075. PMC 4176700. PMID 23989795.
  3.  Benhamú B, Martín-Fontecha M, Vázquez-Villa H, Pardo L, López-Rodríguez ML (September 2014). "Serotonin 5-HT6 receptor antagonists for the treatment of cognitive deficiency in Alzheimer's disease". Journal of Medicinal Chemistry. 57 (17): 7160–81. doi:10.1021/jm5003952. PMID 24850589.
  4.  "AVN 101". AdisInsight. Retrieved 2015-06-10.
  5.  "Aviandr (2,8-dimethyl-5-(2-phenylethyl)-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole hydrochloride) film-coated tablets. Full prescribing information". Russian State Register of Medicines (in Russian). Avineuro Pharmaceuticals, Inc.

External links

Identifiers
IUPAC name
CAS Number1025725-91-0 
1061354-48-0 (hydrochloride)
ChemSpider24643855
UNII6MHR5IV28S
ChEMBLChEMBL592752
CompTox Dashboard (EPA)DTXSID901032403 
Chemical and physical data
FormulaC21H24N2
Molar mass304.437 g·mol−1
3D model (JSmol)Interactive image
SMILES
InChI

////////////maritupirdine, serotonin receptor antagonist, antidepressant, AVN-101, AVN 101, CD 008 0045, 6MHR5IV28S

#maritupirdine, #serotonin receptor antagonist, #antidepressant, #AVN-101, #AVN 101, #CD 008 0045, #6MHR5IV28S