IP Library Patent Application 18789827
Patent Application
App. No. 18/789,827

PROCESS OF MAKING 2-[(3R)-2-[4-AMINO-3-(2-FLUORO-4-PHENOXY-PHENYL)PYRAZOLO[3,4-D]PYRIMIDIN-1-YL]PIPERIDINE-1-CARBONYL]-4-METHYL-4[4-(OXETAN-3-YL)PIPERAZIN-1-YL]-PENT-2-ENENITRILE AND SOLVATE FORMS THEREOF

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Patent No.
US None
App. No.
18/789,827
Abstract

Disclosed herein are novel methods for preparing 2-[(3R)-2-[4-amino-3-(2-fluoro-4-phenoxy-phenyl)pyrazolo[3,4-d]pyrimidin-1-yl]piperidine-1-carbonyl]-4-methyl-4[4-(oxetan-3-yl)piperazin-1-yl]-pent-2-enenitrile, including various solvate forms and intermediates thereof. Also disclosed herein are novel solvate forms and intermediates of 2-[(3R)-2-[4-amino-3-(2-fluoro-4-phenoxy-phenyl)pyrazolo[3,4-d]pyrimidin-1-yl]piperidine-1-carbonyl]-4-methyl-4[4-(oxetan-3-yl)piperazin-1-yl]-pent-2-enenitrile.

Claims (69)

1 . A method of preparing a compound of Formula (I):

or a salt thereof, comprising:

reacting a compound of Formula (I-g):

or a salt thereof, with a compound of Formula (I-n):

or a salt thereof, with amide-coupling reagent, organic base, and acid in organic solvent to form the compound of Formula (I).

2 . The method of claim 1 , wherein the amide-coupling reagent is propylphosphonic anhydride.

3 . The method of claim 1 , wherein the organic base is N-methylmorpholine, triethylamine, or diisopropylamine.

4 . The method of claim 1 , wherein the acid is hydrochloric acid, methanesulfonic acid, paratoluenesulfonic acid, or chlorotoluenesulfonic acid.

5 . The method of claim 1 , wherein the organic solvent comprises dichloromethane, dichloroethane, acetonitrile, chloroform, 2-methyltetrahydrofuran, tetrahydrofuran, methyl tert-butyl ether, toluene, chlorobenzene, methanol, ethanol, or isopropanol.

6 . (canceled)

7 . The method of claim 1 , wherein the compound of Formula (I-n), or a salt thereof, is prepared by reacting a compound of Formula (I-l):

or a salt thereof, with a compound of Formula (I-m):

or a salt thereof, with inorganic or organic base in organic solvent to form the compound of Formula (I-n).

8 . The method of claim 7 , wherein the inorganic base is sodium hydroxide, lithium hydroxide, or potassium hydroxide.

9 . The method of claim 7 , wherein the organic base is sodium methoxide.

10 . The method of claim 7 , wherein the organic solvent is alcohol.

11 . (canceled)

12 . The method of claim 1 , wherein the compound of Formula (I-g), or a salt thereof, is prepared by reacting a compound of Formula (I-f):

or a salt thereof, with base in alcohol and water to form the compound of Formula (I-g).

13 . The method of claim 12 , wherein the base is sodium hydroxide.

14 . The method of claim 12 , wherein the alcohol is methanol.

15 . The method of claim 1 , wherein the compound of Formula (I), or a salt thereof, is at least 95% by weight a compound of Formula (I-(E)):

or a salt thereof.

16 . A method of preparing a compound of Formula (I-n):

or a salt thereof, by reacting a compound of Formula (I-l):

or a salt thereof, with a compound of Formula (I-m):

or a salt thereof, with inorganic or organic base in organic solvent to form the compound of Formula (I-n).

17 . The method of claim 16 , wherein the inorganic base is sodium hydroxide, lithium hydroxide, or potassium hydroxide.

18 . The method of claim 16 , wherein the organic base is sodium methoxide.

19 . The method of claim 16 , wherein the organic solvent is alcohol.

20 . (canceled)

21 . A method of preparing a compound of Formula (I-g):

or a salt thereof, by reacting a compound of Formula (I-f):

or a salt thereof, with base in alcohol and water to form the compound of Formula (I-g).

22 . The method of claim 21 , wherein the base is sodium hydroxide.

23 . The method of claim 21 , wherein the alcohol is methanol.

24 . A compound of Formula (I-n):

or a salt thereof.

25 . An ester solvate of a compound of Formula (I-(E)):

26 . The solvate form of claim 25 , wherein the ester solvate is a methylacetate solvate.

27 . The solvate form of claim 26 , wherein the methylacetate solvate has XRPD pattern comprising one or more peaks chosen from peaks at about 4.676° 2θ, 10.798° 2θ, 14.027° 2θ, 14.280° 2θ, 16.198° 2θ, and 16.704° 2θ.

28 . A carbonate solvate of a compound of Formula (I-(E)):

29 . The solvate form of claim 28 , wherein the carbonate solvate is a dimethylcarbonate solvate.

30 . The solvate form of claim 29 , wherein the dimethylcarbonate solvate characterized by an XRPD pattern comprising one or more peaks chosen from peaks at about 4.765° 2θ, 9.519° 2θ, 10.668° 2θ, 10.829° 2θ, 14.264° 2θ, and 16.976° 2θ.

31 . A method of preparing the methylacetate solvate of claim 26 , wherein crystalline Form B of the compound of Formula (I-(E)) is dissolved in methylacetate to form a solution.

32 . The method of claim 31 , wherein the solution is heated at a temperature ranging from 30 to 50° C. followed by cooling to a temperature ranging from 0 to 15° C.

33 . A method of preparing the methylacetate solvate of claim 26 , wherein the amorphous compound of Formula (I-(E)) is dissolved in methylacetate to form a solution.

34 . The method of claim 33 , wherein the solution is seeded with crystalline Form B of the compound of Formula (I-(E)) to form a suspension followed by stirring at a temperature ranging from 20 to 30° C.

35 . A method of preparing the dimethylcarbonate solvate of claim 29 , wherein crystalline Form C of the compound of Formula (I-(E)) is dissolved in dimethylcarbonate to form a solution.

36 . The method of claim 35 , wherein the solution is frozen, thawed, and stirred at a temperature ranging from 20 to 30° C. to induce particles that stay suspended in solution and do not sediment.

37 . A method of preparing the dimethylcarbonate solvate of claim 29 , wherein the amorphous compound of Formula (I-(E)) is dissolved in dimethylcarbonate to form a solution.

38 . The method of claim 37 , wherein the solution is seeded with crystalline Form B of the compound of Formula (I-(E)) to form a suspension.

39 . The method of claim 38 , wherein the suspension is frozen at a temperature ranging from −10 to −30° C.

40 . The method of claim 39 , wherein the frozen solution is thawed and stirred at a temperature ranging from 20 to 30° C.

41 . A method of preparing a mixture of crystalline Form A and crystalline Form B of a compound of Formula (I-(E)) from the methylacetate solvate of claim 26 , wherein the methylacetate solvate is crystallized in 2-10% dichloromethane in methylacetate with seeds of crystalline Form B, a mixture of crystalline Form A and crystalline Form B, or wet methylacetate solvate of the compound of Formula (I-(E)) to form a suspension.

42 . The method of claim 41 , wherein the methylacetate solvate is crystallized in 5-8% dichloromethane in methylacetate.

43 . The method of claim 41 , wherein the suspension is cooled, filtered, and dried to yield a mixture of crystalline Form A and crystalline Form B of the compound of Formula (I-(E)).

44 . The method of claim 43 , wherein the drying process is carried out at a pressure ranging from 0 to 800 mbars and a temperature ranging from 0 to 70° C.

45 . A method of preparing crystalline Form B of the compound of Formula (I-(E)), wherein the suspension of claim 41 is partially dissolved in ethanol and subjected to heating and cooling cycles at a temperature ranging from 0 to 50° C.

46 . (canceled)

47 . The method of claim 45 , wherein the crystalline mixture is further cooled to a temperature of 0° C.

48 . A method of preparing crystalline Form B of the compound of Formula (I-(E)), wherein the suspension of claim 41 is partially dissolved in isopropylacetate and subjected to heating, cooling, and stirring.

49 . The method of claim 48 , wherein the heating is carried out in 3-5 steps at a temperature ranging from 20 to 70° C. for 1 to 3 hours.

50 . (canceled)

51 . The method of claim 48 , wherein the cooling is carried out at a temperature ranging from 15 to 40° C. within 1 to 3 hours followed by stirring for 8-16 hours.

52 . (canceled)

53 . A method of preparing crystalline Form B of the compound of Formula (I-(E)), wherein the suspension of claim 41 is subjected to pressure.

54 . The method of claim 53 , wherein the pressure ranges from 30 to 70 bars.

55 . The method of claim 53 , wherein the pressure is applied with inert gas.

Assignments (11)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 13, 2026
From: SCHEUERMAN, RANDALL; VAN BEEK, CARIM
To: PRINCIPIA BIOPHARMA INC.
Reel/Frame 073448/0890 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 13, 2026
From: COQUEREL, GÉRARD
To: SANOFI WINTHROP INDUSTRIE
Reel/Frame 073448/0929 →
ASSIGNEE CHANGE OF ADDRESS Recorded Sep 16, 2025
From: PRINCIPIA BIOPHARMA INC.
To: PRINCIPIA BIOPHARMA INC.
Reel/Frame 072881/0270 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 20, 2024
From: SANOFI WINTHROP INDUSTRIE
To: PRINCIPIA BIOPHARMA INC.
Reel/Frame 069344/0607 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 20, 2024
From: COMTE, MYRIAM; CRUCIANI, PAUL; LARQUETOUX, LAURENT; LATREMOLIERE, OLIVIER; LEMAITRE, CLEMENT; VERSPROUMY, PIERRE
To: SANOFI WINTHROP INDUSTRIE
Reel/Frame 069344/0512 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 20, 2024
From: OCHSENBEIN, PHILIPPE
To: SANOFI-AVENTIS RECHERCHE & DEVELOPPEMENT
Reel/Frame 069344/0850 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 20, 2024
From: SANOFI-AVENTIS RECHERCHE & DEVELOPPEMENT
To: PRINCIPIA BIOPHARMA INC.
Reel/Frame 069344/0911 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 29, 2024
From: SANOFI WINTHROP INDUSTRIE
To: PRINCIPIA BIOPHARMA INC.
Reel/Frame 069054/0698 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 29, 2024
From: SANOFI-AVENTIS RECHERCHE & DEVELOPPEMENT
To: PRINCIPIA BIOPHARMA INC.
Reel/Frame 069054/0828 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 29, 2024
From: COMTE, MYRIAM; CRUCIANI, PAUL; LARQUETOUX, LAURENT; LATREMOLIERE, OLIVIER; LEMAITRE, CLEMENT; VERSPROUMY, PIERRE
To: SANOFI WINTHROP INDUSTRIE
Reel/Frame 069054/0070 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 29, 2024
From: OCHSENBEIN, PHILIPPE
To: SANOFI-AVENTIS RECHERCHE & DEVELOPPEMENT
Reel/Frame 069054/0771 →