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Claims for Patent: 9,175,017

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Claims for Patent: 9,175,017

Title:Boronate ester compounds and pharmaceutical compositions thereof
Abstract: The present invention provides novel compounds useful as proteasome inhibitors. The invention also provides pharmaceutical compositions comprising the compounds of the invention and methods of using the compositions in the treatment of various diseases.
Inventor(s): Elliott; Eric L. (Brighton, MA), Ferdous; Abu J. (Winchester, MA), Kaufman; Michael J. (Lexington, MA), Komar; Sonja A. (Belmont, MA), Mazaik; Debra L. (Holliston, MA), McCubbin; Quentin J. (Belmont, MA), Nguyen; Phuong M. (Cambridge, MA), Palaniappan; Vaithianathan (Andover, MA), Skwierczynski; Raymond D. (Andover, MA), Truong; Nobel T. (Milford, MA), Varga; Csanad M. (Newton, MA), Zawaneh; Peter N. (Cambridge, MA)
Assignee:
Application Number:14/449,275
Patent Claims: 1. A method for treating cancer, the method comprises administering to a patient in need of such treatment a therapeutically effective amount of a compound of formula (II): ##STR00018## or a pharmaceutically acceptable salt thereof, wherein: A is 0; P is R.sup.c--C(O)--; R.sup.c is R.sup.D; R.sup.D is 2,5-dichlorophenyl; R.sup.a is isobutyl; R.sup.a1 is hydrogen; each R.sup.b1 and R.sup.b2 independently is hydrogen; each R.sup.b3 and R.sup.b4 independently is --(CH.sub.2).sub.p--CO.sub.2H; wherein one of carboxylic acids optionally forms a further bond with the boron atom; p is 0 or 1; n is 0 or 1; and the cancer is multiple myeloma, recurrence of multiple myeloma, lymphoma, or recurrence of lymphoma.

2. The method of claim 1, wherein the compound of formula (II) is characterized by formula (III): ##STR00019## or a pharmaceutically acceptab1e salt thereof, wherein: A is 0; P is R.sup.c--C(O)--; R.sup.c is --R.sup.D; R.sup.D is 2,5-dichlorophenyl; R.sup.a is isobutyl; and R.sup.a1 is hydrogen.

3. The method of claim 1, wherein the compound of formula (II) is characterized by formula (IV): ##STR00020## or a pharmaceutically acceptab1e salt thereof, wherein: A is 0; P is R.sup.c--C(O)--; R.sup.c is --R.sup.D; R.sup.D is 2,5-dichlorophenyl; R.sup.a is isobutyl; and R.sup.a1 is hydrogen.

4. The method of claim 1, wherein the compound of formula (II) is characterized by formula (IIIa): ##STR00021## or a pharmaceutically acceptab1e salt thereof, wherein: A is 0; P is R.sup.c--C(O)--; R.sup.c is --R.sup.D; R.sup.D is 2,5-dichlorophenyl; R.sup.a is isobutyl; and R.sup.a1 is hydrogen.

5. The method of claim 1, wherein the compound of formula (II) is characterized by formula (IVa): ##STR00022## or a pharmaceutically acceptab1e salt thereof, wherein: A is 0; P is R.sup.c--C(O)--; R.sup.c is --R.sup.D; R.sup.D is 2,5-dichlorophenyl; R.sup.a is isobutyl; and R.sup.a1 is hydrogen.

6. The method of claim 1, wherein the patient in need of the treatment is a patient having or at risk of developing or experiencing a recurrence in a cancer selected from multiple myeloma and lymphoma.

7. The method according to any one of claims 1-6, wherein the compound of formula (II) is administered with another therapeutic agent.

8. The method of claim 7, wherein the other therapeutic agent is melphalan.

9. The method of claim 7, wherein the other therapeutic agent is lenalidomide.

10. The method of claim 1, wherein the compound or pharmaceutical composition is administered orally, parenterally, by inhalation spray, topically, rectally, nasally, buccally, vaginally, or via an implanted reservoir.

11. The method of claim 10, wherein the compound is administered orally.

12. The method of claim 10, wherein the compound is administered intravenously.

13. The method of claim 10, wherein the compound is administered systemically or locally.
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