Wednesday, 30 September 2026

Milsaperidone

 

Milsaperidone

CAS 501373-88-2

C24H29FN2O4 MW 428.50

FDA APPROVED 2/20/2026, Bysanti, To treat schizophrenia and to treat manic or mixed episodes associated with bipolar I disorder

(1S)-1-[4-[3-[4-(6-fluoro-1,2-benzoxazol-3-yl)piperidin-1-yl]propoxy]-3-methoxyphenyl]ethanol

7SV1ZOG031, P-88-8991, (-)-, (S)-Hydroxy Iloperidone, P-88, VHX 869, VHX-896

Milsaperidone (INNTooltip International Nonproprietary Name, USANTooltip United States Adopted Name), also known by its developmental code name VHX-896 and its tentative brand name Bysanti, is an atypical antipsychotic which is pending approval for the treatment of schizophrenia and bipolar disorder and is in phase 3 clinical trials for treatment of major depressive disorder.[1][2][3] It is a prodrug of iloperidone (Fanapt) and acts as a dopamine D2 receptor and serotonin 5-HT2A receptor antagonist, among other actions.[1][4][5] The drug was developed by Vanda Pharmaceuticals.[1]

  • OriginatorVanda Pharmaceuticals
  • Class2 ring heterocyclic compounds; Alcohols; Anisoles; Antidepressants; Antipsychotics; Ethers; Fluorobenzenes; Isoxazoles; Methyl ethers; Mood stabilisers; Phenyl ethers; Piperidones; Small molecules
  • Mechanism of ActionAlpha 1 adrenergic receptor antagonists; Dopamine D2 receptor antagonists; Serotonin 5-HT2 receptor antagonists
  • RegisteredBipolar disorders; Schizophrenia
  • 25 Feb 2026Chemical structure information added.
  • 25 Feb 2026Vanda Pharmaceuticals has patent protection for an improved method of treatment with milsaperidone in USA
  • 25 Feb 2026Vanda Pharmaceuticals has patents pending for an improved method of treatment with milsaperidone in China, Australia, Israel, Mexico and worldwide

PAT

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2003020707&_cid=P20-MM2TQZ-44406-1

Example 1

(S)-1-(4-(3-r4-(6-Fluoro-benzofd1isoxazol-3-vπ-piperidin-1-vπ-propoxy)-3-methoxy-phenvπ-ethanol

56.36 g of boran complex of (3aR, 7R)-1-methyl-3,3-diphenyl-tetrahydro-pyrrolo[1,2-c][1 ,3,2]oxazaborole (1 equivalent) is dissolved under nitrogen in methylenchloride, and the solution is cooled to 0°C. A 1M solution of 1-(4-{3-[4-(6-fluoro-benzo[d]isoxazol-3-yl)-piperidin-1-yl]-propoxy}-3-methoxy-phenyl)-ethanone (iloperidone; 1 equivalent) in methylenchloride is added via a dropping funnel over 90 minutes while the internal temperature is maintained at 0°C ± 2°C. After the addition is complete, the mixture is stirred at 0°C for 20 hours. The reaction mixture is then poured into precooled methanol (0-5°C) during 1 hour. The solution is warmed to room temperature and stirred until the H2 evolution ceases. The solution is concentrated by distillation and the residue dried in vacuum, treated with methanol and stirred for about 1 hour at 50°C and an additional hour at 0CC. The product is isolated by filtration and dried under reduced pressure for 3 hours at 50°C. The title compound is obtained (white crystals).

[α]D20- 19.3° (c=1 in chloroform)
Mp: 138.2 - 138.8°C

The boran complex used as starting material can be obtained as follows:

200 ml of a solution of (3aR, 7R)-1-methyl-3,3-diphenyl-tetrahydro-pyrrolo[1,2-c][1,3,2]oxazaborole (1M in toluene) is stirred at room temperature under nitrogen. 1.2 equivalent borane-dimethylsulfide complex is added with a syringe. The solution is stirred for 2 further hours at room temperature. The borane complex is then crystallised by addition of 4 vol dry hexane and cooling to -12°C for 1.5 hour. The product is isolated by filtration in a sintered glass funnel and dried in vacuum at 40°C. The boran complex is obtained /white crystals).

Example 2

(R)-1-(4-(3-r4-(6-Fluoro-benzord1isoxazol-3-vπ-piperidin-1-vn-propoxy)-3-methoxy-phenlvπ-ethanol

This compound is produced in analogy to Example 1, using boran complex of (3aS, 7R)-1-methyl-3,3-diphenyl-tetrahydro-pyrrolo[1,2-c][1,3,2]oxazaborole.

[α]D20 = + 18.4° (c=1 in chloroform)
Mp: 137.9 - 138.3°C

PAT

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References

  1.  "Vanda Pharmaceuticals". AdisInsight. 30 July 2025. Retrieved 11 October 2025.
  2.  IsHak WW, Hirsch D, Renteria S, Totlani J, Murphy N, Chang T, et al. (October 2025). "Depressive disorders: systematic review of approved psychiatric medications (2009-April 2025) and pipeline phase 3 medications". BMC Psychiatry. 25 (1) 939. doi:10.1186/s12888-025-07141-3. PMC 12506068. PMID 41057811.
  3.  Richmond LM (1 June 2025). "Med Check: FDA Accepts Bysanti Application, Cobenfy Fails as Adjunct, and More". Psychiatric News. 60 (6) appi.pn.2025.06.6.2. doi:10.1176/appi.pn.2025.06.6.2. ISSN 0033-2704. Retrieved 11 October 2025.
  4.  Kang J (9 May 2025). "Milsaperidone Under Review for Bipolar I Disorder and Schizophrenia". MPR. Retrieved 11 October 2025.
  5.  "Vanda Announces Bysanti™ NDA Filing; FDA Decision Expected in Early 2026". BioSpace. 5 May 2025. Retrieved 11 October 2025.
Clinical data
Trade namesBysanti
Other namesVHX896
Routes of
administration		Oral
Drug classAtypical antipsychotic
Identifiers
IUPAC name
CAS Number501373-88-2
PubChem CID10365268
ChemSpider8540717
UNII7SV1ZOG031
KEGGD13099
Chemical and physical data
FormulaC24H29FN2O4
Molar mass428.504 g·mol−1
3D model (JSmol)Interactive image
SMILES
InChI

////////////milsaperidone, FDA 2026, APPROVALS 2026, Bysanti, schizophrenia, 7SV1ZOG031, P-88-8991, (-)-, (S)-Hydroxy Iloperidone, P-88, VHX 869, VHX-896

#milsaperidone, #FDA 2026, #APPROVALS 2026, #Bysanti, #schizophrenia, #7SV1ZOG031, #P-88-8991, #(-)-, (S)-Hydroxy Iloperidone, #P-88, #VHX 869, #VHX-896

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Orenasitecan

 

Orenasitecan

CAS 2418533-89-6

MF C72H86N12O20S MW1471.59

(3S)-3-[3-[2-[2-[2-[[4-[[(1R)-2-carboxy-1-[3-[[3-(propylcarbamoylamino)phenyl]sulfonylamino]phenyl]ethyl]carbamoylamino]phenyl]carbamoylamino]ethoxy]ethoxy]ethoxy]propanoylamino]-4-[(2S)-2-[[(2S)-1-[[(19S)-10,19-diethyl-14,18-dioxo-17-oxa-3,13-diazapentacyclo[11.8.0.02,11.04,9.015,20]henicosa-1(21),2,4,6,8,10,15(20)-heptaen-19-yl]oxy]-3-methyl-1-oxobutan-2-yl]carbamoyl]pyrrolidin-1-yl]-4-oxobutanoic acid

(4S)-4,11-diethyl-3,14-dioxo-3,4,12,14-tetrahydro-1Hpyrano[ 3',4':6,7]indolizino[1,2-b]quinolin-4-yl N-{1-[4-({[(1R)-2-carboxy-1-(3-{3-[(propylcarbamoyl)amino]benzene-1-sulfonamido}phenyl)ethyl]carbamoyl}amino)anilino]-1-oxo-5,8,11-trioxa-2-azatetradecan-14-oyl}-L-alpha-aspartyl-L-prolyl-L-valinate

(4S)-4,11-diethyl-3,14-dioxo-3,4,12,14-tetrahydro-1Hpyrano[3',4':6,7]indolizino[1,2-b]quinolin-4-yl N-{1-[4-({[(1R)-2-
carboxy-1-(3-{3-[(propylcarbamoyl)amino]benzene-1-sulfonamido}phenyl)ethyl]carbamoyl}amino)anilino]-1-oxo-5,8,11-
trioxa-2-azatetradecan-14-oyl}-L-α-aspartyl-L-prolyl-L-valinate
antineoplastic, L3KV5NR5PG

Orenasitecan is a small molecule drug. The usage of the INN stem '-tecan' in the name indicates that Orenasitecan is a antineoplastic, topoisomerase I inhibitor. Orenasitecan has a monoisotopic molecular weight of 1470.58 Da.

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

PAT

Cytostatic conjugates with integrin ligands

Publication Number: US-2021386864-A1

Priority Date: 2018-11-05

https://patents.google.com/patent/US20210386864A1

Separation of enantiomers can also be accomplished on different steps via chromatography using chiral columns

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/////////orenasitecan, antineoplastic, L3KV5NR5PG

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Oveporexton

 

Oveporexton

APPROVED FDA 2026, To treat narcolepsy type 1

CAS 2460722-04-5

MF C23H25F5N2O4S MW 520.5

N-[(2S,3R)-2-[[3-(3,5-difluorophenyl)-2-fluorophenyl]methyl]-4,4-difluoro-1-(2-hydroxy-2-methylpropanoyl)pyrrolidin-3-yl]ethanesulfonamide

N-[(2S,3R)-1-(2-ヒドロキシ-2-メチルプロピオニル)-2-(2,3′,5′-トリフルオロビフェニル-3-イルメチル)-4,4-ジフルオロピロリジン-3-イル]エタンスルホンアミド

ETHANESULFONAMIDE, N-((2S,3R)-4,4-DIFLUORO-1-(2-HYDROXY-2-METHYL-1-OXOPROPYL)-2-((2,3',5'-TRIFLUORO(1,1'-BIPHENYL)-3-YL)METHYL)-3-PYRROLIDINYL)-

N-[(2S,3R)-2-[[3-(3,5-difluorophenyl)-2-fluorophenyl]methyl]-4,4-difluoro-1-(2-hydroxy-2-methylpropanoyl)pyrrolidin-3-yl]ethanesulfonamide

N-{(2S,3R)-4,4-difluoro-1-(2-hydroxy-2-methylpropanoyl)-2-[(2,3',5'-trifluoro-[1,1'-biphenyl]-3-yl)methyl]pyrrolidin-3-yl}ethane-1-sulfonamide
orexin type 2 receptor agonist, TAK-861, TAK 861, 59MF6P2ATF

Oveporexton is a small molecule drug. The usage of the INN stem '-orexton' in the name indicates that Oveporexton is a orexin receptor agonist. Oveporexton has a monoisotopic molecular weight of 520.15 Da.

Oveporexton (INNTooltip International Nonproprietary Name; developmental code name TAK-861) is an orexin receptor agonist and wakefulness-promoting agent which is under development for the treatment of narcolepsy (types 1 and 2) and idiopathic hypersomnia.[1][2][3] It is taken by mouth.[1][2]

The drug acts as a selective agonist of the orexin OX2 receptor.[1][2] It has wakefulness-promoting effects in animals, including in rodents and monkeys.[2] In addition, oveporexton has been found to be effective in the treatment of narcolepsy and cataplexy in phase 3 clinical trials in humans.[4][5][6] The drug is a first-in-class medication and targets the root symptomatic cause of narcolepsy (type 1) by remediating the orexin (hypocretin) deficiency that is present in the condition.[7][8][9]

Oveporexton is being developed by Takeda.[1] As of July 2025, it has completed phase 3 clinical trials for treatment of narcolepsy, whereas no recent development has been reported for treatment of idiopathic hypersomnia.[1][5][10] Takeda plans to submit a New Drug Application (NDA) of oveporexton for the treatment of narcolepsy to the United States Food and Drug Administration (FDA) in 2025.[5] Oveporexton is a follow-on and replacement compound for Takeda's earlier lead drug danavorexton (TAK-925), which is administered intravenously and stopped being developed due to unexpected liver toxicity findings.[10]

  • A Trial of TAK-861 for the Treatment of Narcolepsy With CataplexyCTID: NCT07363720Phase: Phase 3Status: Not yet recruitingDate: 2026-01-23Conditions: Narcolepsy Type 1 (NT1); Narcolepsy With CataplexyInterventions: PlaceboLinked Compound CID: 154617563
  • A Study of TAK-861 for the Treatment of Selected Central Hypersomnia ConditionsCTID: NCT05816382Phase: Phase 2/Phase 3Status: RecruitingDate: 2025-12-01Conditions: Narcolepsy Type 1Interventions: TAK-861Linked Compound CID: 154617563
  • A Study of TAK-861 in People With Narcolepsy Type 1CTID: NCT06505031Phase: Phase 3Status: CompletedDate: 2025-09-15Conditions: Narcolepsy Type 1Interventions: PlaceboLinked Compound CID: 154617563
  • A Study of TAK-861 for the Treatment of Narcolepsy Type 1CTID: NCT06470828Phase: Phase 3Status: CompletedDate: 2025-07-01Conditions: Narcolepsy Type 1Interventions: PlaceboLinked Compound CID: 154617563
  • A Study of TAK-861 in Participants With Narcolepsy Type 1CTID: NCT05687903Phase: Phase 2Status: CompletedDate: 2025-01-09Conditions: Narcolepsy Type 1Interventions: PlaceboLinked Compound CID: 154617563
  • A Randomized, Double-blind, Placebo-Controlled Study to Evaluate the Efficacy, Safety, and Tolerability of TAK-861 for the Treatment of Narcolepsy With Cataplexy (Narcolepsy Type 1)EudraCT: 2022-001654-38Phase: Phase 2Status: CompletedDate: 2023-05-26Linked Compound CID: 154617563
  • A Long-term Extension Study to Evaluate the Safety and Tolerability of TAK-861 in Participants With Selected Central Hypersomnia ConditionsEudraCT: 2022-002965-13Phase: Phase 2, Phase 3Status: Trial now transitionedDate: 2023-04-11Linked Compound CID: 154617563
  • A Randomized, Double-blind, Placebo-Controlled Study to Evaluate the Efficacy, Safety, and Tolerability of TAK-861 for the Treatment of Narcolepsy Without Cataplexy (Narcolepsy Type 2)EudraCT: 2022-002966-34Phase: Phase 2Status: CompletedDate: 2023-03-20Linked Compound CID: 154617563

SYN

https://patents.google.com/patent/US11028048B2/en

SYN

[US20210276949]

https://patentscope.wipo.int/search/en/detail.jsf?docId=US335376985&_cid=P12-MM5PM8-70991-1

Example 3

N-{(2S,3R)-4,4-difluoro-1-(2-hydroxy-2-methylpropanoyl)-2-. [(2,3′,5′-trifluoro[1,1′-biphenyl]-3-yl)methyl]pyrrolidin-3-yl}ethanesulfonamide

A) tert-butyl (2S,3R)-3-(ethylsulfonamido)-4,4-difluoro-2-((2,3′,5′-trifluoro-[1,1′-biphenyl]-3-yl)methyl)pyrrolidine-1-carboxylate

      To a mixture of tert-butyl (2S,3R)-2-(3-chloro-2-fluorobenzyl)-3-(ethylsulfonamido)-4,4-difluoropyrrolidine-1-carboxylate (3.70 g), (3,5-difluorophenyl)boronic acid (2.56 g) and 1 M aqueous potassium phosphate solution (24.3 mL) in DME (50 mL) was added XPhos Pd G3 (0.343 g) at room temperature. The mixture was stirred at 90° C. under nitrogen atmosphere for 15 h. The reaction mixture was poured into water and extracted with EtOAc. The organic layer was washed with saturated brine, dried over magnesium sulfate and concentrated under reduced pressure. The residue was purified by column chromatography (silica gel, EOAc/hexane) to give the title compound (3.30 g).
      MS: [M−H] − 533.2.

B) N-((2S,3R)-4,4-difluoro-2-((2,3′,5′-trifluoro-[1,1′-biphenyl]-3-yl)methyl)pyrrolidin-3-yl)ethanesulfonamide hydrochloride

      A mixture of tert-butyl (2S,3R)-3-(ethylsulfonamido)-4,4-difluoro-2-((2,3′,5′-trifluoro-[1,1′-biphenyl]-3-yl)methyl)pyrrolidine-1-carboxylate (3.30 g) and 4 M HCl/CPME solution (30 mL) was stirred overnight at room temperature. By filtration, the title compound (2.86 g) was obtained.
      MS: [M+H] + 435.1.

C) N-{(2S,3R)-4,4-difluoro-1-(2-hydroxy-2-methylpropanoyl)-2-[(2,3′,5′-trifluoro[1,1′-biphenyl]-3-yl)methyl]pyrrolidin-3-yl}ethanesulfonamide

      To a mixture of N-((2S,3R)-4,4-difluoro-2-((2,3′,5′-trifluoro-[1,1′-biphenyl]-3-yl)methyl)pyrrolidin-3-yl)ethanesulfonamide hydrochloride (200 mg) and DIPEA (0.367 ml) in THF (3 mL) was added alpha-acetoxy-isobutyryl chloride (0.074 ml) at 0° C., and the mixture was stirred at same temperature for 10 min. To the mixture were added water (1 ml) and 4 M lithium hydroxide solution (1.06 ml), and the mixture was stirred overnight at room temperature. The mixture was diluted with saturated brine and extracted with EtOAc. The extract was dried over magnesium sulfate and concentrated under reduced pressure. The residue was purified by column chromatography (silica gel, EtOAc/hexane) and recrystallized from EtOAc/hexane to give the title compound (154 mg).
       1H NMR (400 MHz, CDCl 3) δ 1.32-1.40 (9H, m), 2.27-2.54 (1H, m), 2.88-3.16 (4H, m), 4.02-4.49 (3H, m), 4.86-5.20 (2H, m), 6.78-6.86 (1H, m), 7.02-7.10 (2H, m), 7.16-7.22 (1H, m), 7.27-7.31 (1H, m), 7.35-7.43 (1H, m).

PAT

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2025229584&_cid=P12-MM5PIO-68796-2

 N-{(2S,3R)-4,4-difluoro-l-(2-hydroxy-2-methylpropanoyl)-2-[(2,3',5'-trifluoro[l,l'-biphenyl]-3-yl)methyl]pyrrolidin-3-yl}ethanesulfonamide, (hereafter referred as to “Compound A”) is described in U.S. Patent No. 11,028,048.

Compound A

PAT

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References

  1.  "Oveporexton". AdisInsight. 16 December 2024. Retrieved 26 February 2025.
  2.  Mitsukawa K, Terada M, Yamada R, Monjo T, Hiyoshi T, Nakakariya M, et al. (September 2024). "TAK-861, a potent, orally available orexin receptor 2-selective agonist, produces wakefulness in monkeys and improves narcolepsy-like phenotypes in mouse models". Scientific Reports. 14 (1) 20838. Bibcode:2024NatSR..1420838M. doi:10.1038/s41598-024-70594-1. PMC 11379823. PMID 39242684.
  3.  Kallweit MS, Kallweit NP, Kallweit U (29 November 2023). "Pharmacological Treatments of Sleep–Wake Disorders: Update 2023". Clinical and Translational Neuroscience. 7 (4): 42. doi:10.3390/ctn7040042. ISSN 2514-183X.
  4.  Walters J (7 October 2025). "Positive Data Presentation on Oveporexton for Narcolepsy". Psychiatric Times. Retrieved 7 October 2025.
  5.  Beaney A (14 July 2025). "Takeda's oral narcolepsy drug shines in two Phase III trials". Clinical Trials Arena. Retrieved 7 October 2025.
  6.  Dauvilliers Y, Plazzi G, Mignot E, Lammers GJ, Del Río Villegas R, Khatami R, et al. (May 2025). "Oveporexton, an Oral Orexin Receptor 2-Selective Agonist, in Narcolepsy Type 1". The New England Journal of Medicine. 392 (19): 1905–1916. doi:10.1056/NEJMoa2405847. PMID 40367374.
  7.  Abad VC (2023). "Pharmacological options for narcolepsy: are they the way forward?". Expert Rev Neurother. 23 (9): 819–834. doi:10.1080/14737175.2023.2249234. PMID 37585269.
  8.  Matsuyama K (8 September 2025). "Takeda Nears First Therapy for Narcolepsy's Root Cause". Bloomberg.com. Archived from the original on 8 September 2025. Retrieved 7 October 2025.
  9.  Vinluan F (9 September 2025). "Takeda Is Waking Up the Narcolepsy Market With First-in-Class Drug, But Alkermes Is on Its Heels". MedCity News. Retrieved 7 October 2025.
  10.  Mullard A (September 2025). "Leading orexin receptor agonist clears phase III for narcolepsy". Nat Rev Drug Discov. 24 (9): 655. doi:10.1038/d41573-025-00137-4. PMID 40775090.
Clinical data
Other namesTAK-861; TAK861
Routes of
administration		Oral[1][2]
Drug classOrexin OX2 receptor agonist; Wakefulness-promoting agent
Identifiers
IUPAC name
CAS Number2460722-04-5
PubChem CID154617563
ChemSpider130299567
UNII59MF6P2ATF
KEGGD13223
Chemical and physical data
FormulaC23H25F5N2O4S
Molar mass520.52 g·mol−1
3D model (JSmol)Interactive image
SMILES
InChI

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/////////oveporexton, orexin type 2 receptor agonist, TAK-861, TAK 861, 59MF6P2ATF, approvals 2026, fda 2026, Orzeyful

#oveporexton, #orexin type 2 receptor agonist, #TAK-861, #TAK 861, #59MF6P2ATF, #approvals 2026, #fda 2026, #Orzeyful

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Pebezertinib

 

Pebezertinib

CAS 2769954-39-2

MF C24H19F4N7O MW 497.4 g/mol

N-[4-fluoro-3-[[2-[(1-methylpyrazol-4-yl)amino]-5-[4-(trifluoromethyl)phenyl]pyrimidin-4-yl]amino]phenyl]prop-2-enamide

N-[4-fluoro-3-({2-[(1-methyl-1H-pyrazol-4-yl)amino]-5-[4-(trifluoromethyl)phenyl]pyrimidin-4-yl}amino)phenyl]prop-2-enamide
epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor, antineoplastic, BLU 451, BLU 203139, G8G5AU5GLJ, LNG 451

Pebezertinib is a small molecule drug. The usage of the INN stem '-ertinib' in the name indicates that Pebezertinib is a epidermal growth factor receptor (EGFR) inhibitor. Pebezertinib is under investigation in clinical trial NCT05241873 ((Concerto) Study of BLU-451 in Advanced Cancers With EGFR Exon 20 Insertion Mutations). Pebezertinib has a monoisotopic molecular weight of 497.16 Da.

Pebezertinib is an orally bioavailable, central nervous system (CNS) penetrating, mutant-selective covalent inhibitor of epidermal growth factor receptor (EGFR) exon 20 insertion (Ex20ins) activating mutations, with potential antineoplastic activity. Upon oral administration, pebezertinib selectively targets, irreversibly binds to and inhibits the activity of EGFR Ex20ins and some other oncogenic point mutations. This prevents EGFR Ex20ins-mediated signaling. This may induce cell death and inhibit tumor growth in EGFR Ex20ins-overexpressing tumor cells. EGFR, a receptor tyrosine kinase mutated in many tumors, plays a key role in tumor cell proliferation and tumor vascularization. Pebezertinib is able to penetrate the blood-brain-barrier (BBB) and may therefore exert its activity against EGFR Ex20ins-driven CNS primary tumors and CNS metastases. Pebezertinib does not inhibit the activity of wild-type (WT) EGFR. EGFR Ex20ins are oncogenic driver mutations that constitutively upregulate kinase activity.

(Concerto) Study of BLU-451 in Advanced Cancers With EGFR Exon 20 Insertion Mutations

CTID: NCT05241873

Phase: Phase 1

Status: Terminated

Date: 2025-02-10

Conditions: Lung Neoplasm Malignant; Carcinoma, Non-Small-Cell Lung; Respiratory Tract Neoplasms; Neoplasms; Neoplasms by Site; Lung Diseases; Respiratory Tract Disease; Carcinoma, Bronchogenic; Bronchial Neoplasms; Adenocarcinoma; Carcinoma; Neoplasms by Histologic Type; EGFR Exon 20 Mutation; EGFR Exon 20 Insertion Mutation; EGFR Activating Mutation; Antineoplastic Agents; Metastatic Lung Cancer; Brain Metastases; EGFR-mutated NSCLC; EGFR Atypical Mutations, Including G719X and L861Q

Interventions: Pemetrexed

Linked Compound CID: 426756; 135410875; 10339178; 163280903

SYN

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2022094354&_cid=P22-MM76BU-63469-1

Scheme 21: Synthesis of N-(4-fluoro-3-((2-((1-methyl-1H-pyrazol-4-yl)amino)-5-(4-(trifluoromethyl)phenyl)pyrimidin-4-yl)amino)phenyl)acrylamide (Compound 37):

Step 1: Synthesis of 5-bromo-2-chloro-N-(2-fluoro-5-nitrophenyl)pyrimidin-4-amine (89):

[0286] Title compound was prepared in a manner substantially similar to procedure mentioned in General Procedure A. The crude was purified by combiflash eluted with 40% ethyl acetate in hexane to get (89) as pale yellow solid (1.3 g, Yield: 44.24 %). MS: [M+H]+ 346.97.

Step 2: Synthesis of 2-chloro-N-(2-fluoro-5-nitrophenyl)-5-(4-(trifluoromethyl)phenyl)pyrimidin-4-amine (91):

[0287] Title compound was prepared in a manner substantially similar to procedure mentioned in General Procedure M3. The crude was purified by combiflash eluted with 35% ethyl acetate in hexane to get desired product (91) as light yellow solid (700 mg; Yield: 50.12%). MS:

[M+H]+ 413.10

Step 3: Synthesis of N4-(2-fluoro-5-nitrophenyl)-N2-(1-methyl-1H-pyrazol-4-yl)-5-(4-(trifluoromethyl)phenyl)pyrimidine-2,4-diamine (92):

[0288] Title compound was prepared in a manner substantially similar to procedure mentioned in General Procedure H. The crude was purified by combiflash eluted with 1% methanol in dichloromethane to get desired product (92) as pale yellow solid (500 mg; Yield: 70.24%). MS:

[M+H]+ 474.09

Step 4: Synthesis of N4-(5-amino-2-fluorophenyl)-N2-(1-methyl-1H-pyrazol-4-yl)-5-(4-(trifluoromethyl)phenyl)pyrimidine-2,4-diamine (93):

[0289] Title compound was prepared in a manner substantially similar to procedure mentioned in General Procedure L to get (93) as semi solid (350 mg; Yield: 74.78%). MS: [M+H]+ 444.11

Step 5: Synthesis of N-(4-fluoro-3-((2-((1-methyl-1H-pyrazol-4-yl)amino)-5-(4-(trifluoromethyl)phenyl)pyrimidin-4-yl)amino)phenyl)acrylamide (Compound 37):

[0290] Title compound was prepared in a manner substantially similar to procedure mentioned in General Procedure K. The crude was purified by Prep HPLC to get Compound 37 as off white solid (30 mg, Yield: 13.33%).1H NMR (400 MHz, DMSO-d6): δ 10.21 (bs, 1H), 9.24 (bs, 1H), 8.53 (bs, 1H), 7.99 (s, 1H), 7.71-7.81 (m, 5H), 7.57 (s, 1H), 7.08-7.16 (m, 3H), 6.37-6.44 (m, 1H), 6.21-6.26 (m, 1H), 5.74 (d, J = 8.4 Hz, 1H), 3.54 (s, 3H). LCMS: [M+H]+ 498.35.

SYN

[WO2023215431A1]

International Patent Application No. PCT/US2021/057472, the entire teachings of which are incorporated herein by reference, discloses selective inhibitors of EGFR, including exon 20 mutant proteins, which can be used to treat various cancers. The structure of one of the inhibitors disclosed in PCT Patent Application No. PCT/US2021/057472, referred to

herein as “Compound (I)” is shown below:

Example 1 : Preparation of Compound (I)

Synthesis of N-(4-fluoro-3-((2-((l-methyl-lH-pyrazol-4-yl)amino)-5-(4-(trifluoro methyl)phenyl)pyrimidin-4-yl)amino)phenyl)acrylamide (Compound I):

Step 1 : Synthesis of 5-bromo-2-chloro-N-(2-fluoro-5-nitrophenyl)pyrimidin-4-amine (89):

To an ice cold solution of 2-fluoro-5-nitroaniline (12) (1.0 eq) in tetrahydrofuran was added sodium hydride (60% dispersion in mineral oil, 3.0 eq) portion-wise. The resulting reaction mixture was stirred at room temperature for 30 minutes and followed by the addition of 2, 4-di chi oro-5 -bromopyrimidine (88) (1.0 eq). The resulting reaction mixture was heated at 60 °C for 16 hours. After completion (TLC monitoring), quenched with ice, extracted with ethyl acetate (3 times). The combined organic layers were washed with water, brine, dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure. The crude was purified by combiflash eluted with 40% ethyl acetate in hexane to get (89) as pale yellow solid (1.3 g, Yield: 44.24 %). MS: [M+H]+ 346.97.

Step 2: Synthesis of 2-chloro-N-(2-fluoro-5-nitrophenyl)-5-(4-(trifluoromethyl)phenyl) pyrimidin-4-amine (91):

To a solution of halo derivative (89) (1.0 eq) and respective boronate acid/ester derivative (90) (1.1 eq) in A A i methyl form am ide: water (4: 1) was added sodium carbonate or sodium bicarbonate (2.0 eq). The resulting reaction mixture was degassed under argon atmosphere for 15 minutes, followed by addition of tetrakis(triphenylphosphine)palladium(0) (0.1 eq). The resulting reaction mixture was heated at 90 °C for 16 hours. After completion of reaction (TLC monitoring), the reaction mixture was cooled to room temperature, water was added and extracted with ethyl acetate (3 times). The combined organic layers were washed with brine, dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure. The crude was purified by combiflash eluted with 35% ethyl acetate in hexane to get desired product (91) as light yellow solid (700 mg; Yield: 50.12%). MS: [M+H]+413.10.

Step 3 : Synthesis of N4-(2-fluoro-5-nitrophenyl)-N2-(l-methyl-lH-pyrazol-4-yl)-5-(4-(trifluoromethyl)phenyl)pyrimidine-2,4-diamine (92):

To an ice-cold solution of chloro compound (91) (1.0 eq) in isopropanol was added amine (22) (1.2 eq) and trifluoroacetic acid (2.0 eq). The reaction mixture was heated at 110 °C for 16 hours. After completion of the reaction (TLC monitoring), the reaction mixture was concentrated under reduced pressure, added saturated solution of sodium bicarbonate and extracted with dichloromethane (3 times). The combined organic layers were washed with brine solution, dried over anhydrous sodium sulfate and evaporated under reduced pressure. The crude was purified by combiflash eluted with 1% methanol in di chloromethane to get desired product (92) as pale yellow solid (500 mg; Yield: 70.24%). MS: [M+H]+ 474.09.

Step 4: Synthesis of N4-(5-amino-2-fluorophenyl)-N2-(l-methyl-lH-pyrazol-4-yl)-5-(4-(trifluoromethyl)phenyl)pyrimidine-2,4-diamine (93):

To an ice cold solution of nitro derivative (92) (1.0 eq) in methanol: tetrahydrofuran: water (2:2: 1) were added zinc-dust or iron powder (5 eq) and ammonium chloride (5 eq). The resultant reaction mixture was stirred at room temperature for 2 hours. After completion of reaction (TLC monitoring), reaction mixture passed through celite bed washed with 5% methanol in dichloromethane. The filtrate was washed with water, brine, dried over anhydrous sodium sulfate, filtered and concentrated to dryness to get the desired product (93) as semi solid (350 mg; Yield: 74.78%). MS: [M+H]+ 444.11.

Step 5 : Synthesis of N-(4-fluoro-3-((2-((l-methyl-lH-pyrazol-4-yl)amino)-5-(4-(trifluoromethyl)phenyl)pyrimidin-4-yl)amino)phenyl)acrylamide (Compound I):

To a solution of amino compound (93) (1.0 eq) in dichloromethane: tetrahydrofuran (1 :1) was cooled to -40 °C followed by triethylamine (3-5 eq) and acryloyl chloride (1.0 eq) were added. The mixture was stirred at the same temperature for 2 hours. After completion of reaction (monitored by TLC), added water and extracted with dichloromethane (3 times). The combined organic layers washed with brine, dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure. The crudes were purified by Prep-HPLC purification to to obtain Compound I as off white solid (30 mg, Yield: 13.33%). 'H NMR (400 MHz, DMSO-de): 8 10.21 (bs, 1H), 9.24 (bs, 1H), 8.53 (bs, 1H), 7.99 (s, 1H), 7.71-7.81 (m, 5H), 7.57 (s, 1H), 7.08-7.16 (m, 3H), 6.37-6.44 (m, 1H), 6.21-6.26 (m, 1H), 5.74 (d, J= 8.4 Hz, 1H), 3.54 (s, 3H). LCMS: [M+H]+ 498.35.

PAT

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[1]. 
Zhou Y, et al., Anti-PD-1/L1 antibody plus anti-VEGF antibody vs. more VEGFR-targeted TKI as first-line therapy for unresectable hepatocellular carcinoma: a network meta-analysis. Explor Target Antitumor Ther. 2024;5(3):568-580.  [Content Brief]

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