IP Library Granted Patent US 12,478,632
Granted Patent B2
US 12,478,632 · App. 18/484,252 · Granted Nov 25, 2025

Method for ameliorating progression of renal fibrosis and treating renal fibrosis by 5-(2′,4′-difluorophenyl)-salicylanilide derivatives

Inventors: Shuk-Man Ka (Taipei, TW); Hsu-shan Huang (Taipei, TW); Ann Chen (Taipei, TW)
Assignee: NATIONAL DEFENSE MEDICAL UNIVERSITY
A61K31/609A61K31/536A61P13/12
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Quick Facts
Patent No.
US 12,478,632
App. No.
18/484,252
Granted
Nov 25, 2025
Kind
B2
Abstract

The current invention is in the field of molecular biology/pharmacology and provides methods of using a pharmaceutical composition of 5-(2′,4′-difluorophenyl)-salicylanilide derivatives and their ring-fused analogs for inhibiting, reducing, or treating chronic kidney disease or/and renal fibrosis, conditions leading to or arising from it, and/or negative effects of each thereof.

Claims (9)

1 . A method of ameliorating a renal fibrosis or treating a renal fibrosis in a subject in need thereof, comprising administering an effective amount of 6-(2,4-difluorophenyl)-3-(3-(trifluoromethyl)phenyl)-2H-benzo[e][1,3]oxazine-2,4(3H)-dione to the subject, wherein the 6-(2,4-difluorophenyl)-3-(3-(trifluoromethyl)phenyl)-2H-benzo[e][1,3]oxazine-2,4(3H)-dione attenuates renal fibrosis of the subject, and the subject suffers from renal tubulointerstitial lesions (TILs).

2 . A method of ameliorating a renal fibrosis or treating a renal fibrosis in a subject in need thereof, comprising administering an effective amount of 6-(2,4-difluorophenyl)-3-(3-(trifluoromethyl)phenyl)-2H-benzo[e][1,3]oxazine-2,4(3H)-dione to the subject, wherein the 6-(2,4-difluorophenyl)-3-(3-(trifluoromethyl)phenyl)-2H-benzo[e][1,3]oxazine-2,4(3H)-dione attenuates renal fibrosis of the subject, and the subject suffers from IgA nephropathy (IgAN).

3 . A method of ameliorating a renal fibrosis or treating a renal fibrosis in a subject in need thereof, comprising administering an effective amount of 6-(2,4-difluorophenyl)-3-(3-(trifluoromethyl)phenyl)-2H-benzo[e][1,3]oxazine-2,4(3H)-dione to the subject, wherein the 6-(2,4-difluorophenyl)-3-(3-(trifluoromethyl)phenyl)-2H-benzo[e][1,3]oxazine-2,4(3H)-dione attenuates renal fibrosis of the subject, and the subject suffers from lupus nephritis (LN).

4 . The method according to claim 3 , wherein the 6-(2,4-difluorophenyl)-3-(3-(trifluoromethyl)phenyl)-2H-benzo[e][1,3]oxazine-2,4(3H)-dione can downregulate serum levels of IgG anti-dsDNA about 60˜70% of the subject.

5 . The method according to claim 1 , wherein the 6-(2,4-difluorophenyl)-3-(3-(trifluoromethyl)phenyl)-2H-benzo[e][1,3]oxazine-2,4(3H)-dione can downregulate serum levels of blood urea nitrogen about 50˜60% in the subject.

6 . The method according to claim 1 , wherein the 6-(2,4-difluorophenyl)-3-(3-(trifluoromethyl)phenyl)-2H-benzo[e][1,3]oxazine-2,4(3H)-dione can downregulate serum levels of creatinine about 30˜40% in the subject.

7 . The method according to claim 1 , wherein the 6-(2,4-difluorophenyl)-3-(3-(trifluoromethyl)phenyl)-2H-benzo[e][1,3]oxazine-2,4(3H)-dione can attenuate sclerosis and fibrosis in a kidney of the subject.

8 . The method according to claim 1 , wherein the 6-(2,4-difluorophenyl)-3-(3-(trifluoromethyl)phenyl)-2H-benzo[e][1,3]oxazine-2,4(3H)-dione can attenuate crescent formation about 40˜90% in a kidney of the subject.

9 . The method according to claim 1 , wherein the 6-(2,4-difluorophenyl)-3-(3-(trifluoromethyl)phenyl)-2H-benzo[e][1,3]oxazine-2,4(3H)-dione can attenuate glomerular cell proliferation about 15˜35% in a kidney of the subject.

Assignments (2)
CHANGE OF NAME Recorded Oct 21, 2025
From: NATIONAL DEFENSE MEDICAL CENTER
To: NATIONAL DEFENSE MEDICAL UNIVERSITY
Reel/Frame 073158/0873 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 17, 2023
From: KA, SHUK-MAN; HUANG, HSU-SHAN; CHEN, ANN
To: NATIONAL DEFENSE MEDICAL CENTER
Reel/Frame 065246/0149 →
Continuity (2)
Continuation 17308679 · May 5, 2021
Related Publication 20240033271A1 · Feb 1, 2024
References Cited (4)
US 9162993B2 · Chang et al. · 2015 [cited by applicant]
Yang et al. (Journal of Pathology, 2021; 253: 427-441, published online Jan. 2021 (Year: 2021). [cited by examiner]
Hutton et al. (Nephrology 21(2016)736-744) (Year: 2016). [cited by examiner]
Shin-Ruen Yang, LCC18, a benzamide-linked small molecule, ameliorates IgA nephropathy in mice, Journal of Pathology, Jan. 27, 2021, J Pathol 2021; 253: 427-441. [cited by applicant]