IP Library Granted Patent US 12,583,857
Granted Patent B2
US 12,583,857 · App. 18/393,274 · Granted Mar 24, 2026

Anti-liferative agents comprising substituted benzo[e]pyrido[1,2-a][1,4]diazepines

Inventors: Paul Joseph Mark Jackson (Hertfordshire, GB); David Edwin Thurston (Hertfordshire, GB); Khondaker Mirazur Rahman (Hertfordshire, GB)
Assignee: PHEON THERAPEUTICS LTD
C07D471/04A61K47/6803A61K47/68035A61K47/6855A61P35/00
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Quick Facts
Patent No.
US 12,583,857
App. No.
18/393,274
Granted
Mar 24, 2026
Kind
B2
Abstract

The invention relates to substituted pyrridinobenzodiazepines (PDDs) of formula (XVI) and pharmaceutically acceptable salts thereof, which are useful as medicaments, in particular as anti-proliferative agents.

Claims (56)

1 . A compound of formula (XVI):

or a pharmaceutically acceptable salt thereof,

wherein:

(i) R 5 is H; and

R 6 is OH or OC 1-6 alkyl; or

(ii) R 5 and R 6 , taken together with the N atom and C atom to which they are attached, form N═C;

L is C 1-12 alkylene-;

Y 5 is CH or N;

q is 1;

Y 1 is CH or N;

Y 2 is CH or N;

R 19 is H or (CH 2 ) t NR 20 R 21 ;

t is 0, 1, 2, 3, 4, 5, or 6;

R 20 is H or C 1-6 alkyl;

R 21 is H or C 1-6 alkyl;

p is 1;

Z 1 is —NH—, —N(CH 3 )—, —O—, or —S—;

Z 2 is CH or N;

R 22 is (CH 2 ) j C(O)OH, (CH 2 ) j C(O)OC 1-6 alkyl, (CH 2 ) j NR 11 R 12 , or C(O)NHR 24 ;

R 24 is phenyl, wherein the phenyl is substituted with one (CH 2 ) j R 18 substituent;

j is 0, 1, 2, 3, 4, 5, or 6;

R 18 is H, C(O)OR 11 , or NR 11 R 12 ;

R 11 is H or C 1-6 alkyl; and

R 12 is H or C 1-6 alkyl;

with the proviso that at least one of Y 1 and Y 2 is CH.

2 . The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein R 5 and R 6 , taken together with the N atom and C atom to which they are attached, form N═C.

3 . The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein Y 5 is CH.

4 . The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein:

Y 1 is CH; and

Y 2 is CH.

5 . The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein:

Z 1 is —N(CH 3 )—; and

Z 2 is CH.

6 . The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein:

R 22 is C(O)NHR 24 ; and

R 24 is phenyl, wherein the phenyl is substituted with one (CH 2 ) j R 18 substituent.

7 . The compound of claim 6 , or a pharmaceutically acceptable salt thereof, wherein j is 0.

8 . The compound of claim 6 , or a pharmaceutically acceptable salt thereof, wherein R 18 is NR 11 R 12 .

9 . The compound of claim 8 , or a pharmaceutically acceptable salt thereof, wherein:

R 11 is H; and

R 12 is H.

10 . The compound of claim 1 , wherein the compound is:

or a pharmaceutically acceptable salt thereof.

11 . The compound of claim 1 , wherein the compound is:

or a pharmaceutically acceptable salt thereof.

12 . The compound of claim 1 , wherein the compound is:

or a pharmaceutically acceptable salt thereof.

13 . The compound of claim 1 , wherein the compound is:

or a pharmaceutically acceptable salt thereof.

14 . The compound of claim 1 , wherein the compound is:

or a pharmaceutically acceptable salt thereof.

15 . A pharmaceutical composition comprising a pharmaceutically acceptable excipient, carrier, or diluent and a compound of claim 1 , or a pharmaceutically acceptable salt thereof.

16 . A method for inhibiting cancer cell proliferation in a patient in need thereof, wherein the method comprises administering to the patient a therapeutically effective amount of the pharmaceutical composition of claim 15 .

17 . The method of claim 16 , wherein the patient suffers from a cancer selected from the group consisting of breast cancer, cervical cancer, colorectal cancer, gastric cancer, leukemia, liver cancer, lung cancer, melanoma, pancreatic cancer, prostate cancer, rectal cancer, renal cancer, skin cancer, and stomach cancer.

18 . A compound of the following formula:

or a pharmaceutically acceptable salt thereof.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 19, 2024
From: JACKSON, PAUL JOSEPH MARK; RAHMAN, KHONDAKER MIRAZUR; THURSTON, DAVID EDWIN
To: FEMTOGENIX LIMITED
Reel/Frame 066826/0380 →
CHANGE OF NAME Recorded Mar 19, 2024
From: FEMTOGENIX LTD
To: PHEON THERAPEUTICS LTD
Reel/Frame 066826/0570 →
Priority Claims (1)
GB 1514928 · Aug 21, 2015 · national
Continuity (6)
Continuation 17184440 · Feb 24, 2021
Continuation 16440424 · Jun 13, 2019
Continuation 15953428 · Apr 14, 2018
Continuation In Part 15901714 · Feb 21, 2018
Continuation In Part PCTGB2016052565 · Aug 19, 2016
Related Publication 20250011317A1 · Jan 9, 2025
References Cited (71)
US 5366972A · Hargrave et al. · 1994 [cited by applicant]
US 5418229A · Alker et al. · 1995 [cited by applicant]
US 5650409A · Rogers et al. · 1997 [cited by applicant]
US 5712269A · McCabe et al. · 1998 [cited by applicant]
US 6608193B2 · Liu et al. · 2003 [cited by applicant]
US 6864250B1 · Funamizu et al. · 2005 [cited by applicant]
US 7067511B2 · Thurston et al. · 2006 [cited by applicant]
US 7384934B2 · Aicher et al. · 2008 [cited by applicant]
US 7456169B2 · Hasvold et al. · 2008 [cited by applicant]
US 7528128B2 · Ahmed et al. · 2009 [cited by applicant]
US 7709470B2 · Sakaki et al. · 2010 [cited by applicant]
US 8039464B2 · Schrattenholz · 2011 [cited by applicant]
US 8426402B2 · Li et al. · 2013 [cited by applicant]
US 8569298B2 · Barlaam et al. · 2013 [cited by applicant]
US 8592576B2 · Howard et al. · 2013 [cited by applicant]
US 8637664B2 · Howard et al. · 2014 [cited by applicant]
US 8637665B2 · Ahmed et al. · 2014 [cited by applicant]
US 8642610B2 · Brown · 2014 [cited by applicant]
US 9006233B2 · Cook et al. · 2015 [cited by applicant]
US 9315497B2 · Verdecia Reyes et al. · 2016 [cited by applicant]
US 9376440B2 · Howard et al. · 2016 [cited by applicant]
US 9518118B2 · Chen et al. · 2016 [cited by applicant]
US 9526801B2 · McDonald et al. · 2016 [cited by applicant]
US 9534000B2 · Chari · 2017 [cited by applicant]
US 9951133B2 · Yu et al. · 2018 [cited by applicant]
US 9974864B2 · Junutula et al. · 2018 [cited by applicant]
US 20070191349A1 · Howard et al. · 2007 [cited by applicant]
US 20080064870A1 · Ahmed et al. · 2008 [cited by applicant]
US 20080275023A1 · Guidi et al. · 2008 [cited by applicant]
US 20090318412A1 · Matsumoto et al. · 2009 [cited by applicant]
US 20110263574A1 · Schrattenholz · 2011 [cited by applicant]
US 20120115852A1 · Shultz et al. · 2012 [cited by applicant]
US 20130210804A1 · Anthony et al. · 2013 [cited by applicant]
US 20160207949A1 · Zhao · 2016 [cited by applicant]
US 20170253602A1 · Schall et al. · 2017 [cited by applicant]
US 20170333442A1 · Yin et al. · 2017 [cited by applicant]
US 20170362220A1 · Fischer et al. · 2017 [cited by applicant]
US 20170369453A1 · Thomas et al. · 2017 [cited by applicant]
US 20170369507A1 · Christian et al. · 2017 [cited by applicant]
US 20180110873A1 · McDonald et al. · 2018 [cited by applicant]
EP 0556947A1 · 1993 [cited by applicant]
EP 1608650B1 · 2010 [cited by applicant]
EP 2421870B1 · 2016 [cited by applicant]
JP 2009263283A · 2009 [cited by applicant]
JP 2012516896A · 2012 [cited by applicant]
JP 6903635B2 · 2021 [cited by applicant]
WO 1996038422A1 · 1996 [cited by applicant]
WO 2007039752A1 · 2007 [cited by applicant]
WO 2010091150A1 · 2010 [cited by applicant]
WO 2013164593A1 · 2013 [cited by applicant]
WO 2015028850A1 · 2015 [cited by applicant]
WO 2015166289A1 · 2015 [cited by applicant]
WO 2016198869A1 · 2016 [cited by applicant]
WO WO2017032983A1 · 2017 [cited by examiner]
WO 2017074914A1 · 2017 [cited by applicant]
WO 2018053552A2 · 2018 [cited by applicant]
Jordan, V. C. Nature Reviews: Drug Discovery, 2, 2003, 205. [cited by examiner]
Evan, Davd, “Great Britain Search Report—GB application No. GB1514928.9,” Feb. 5, 206, pp. 1-4. [cited by applicant]
Sulberg, Anna, “International Search Report and Written Opinion—International patent application No. PCT/GB2016/052565,” Nov. 2, 2016; pp. 1-14. [cited by applicant]
Baraldi et al., “Synthesis in Vitro Antiproliferative Activity, and DNA-Binding Properties of Hybrid Molecules Containing Pyrrolo[2, 1-c][1,4]benzodiazepine and Minor-Groove-Binding Oligopyrrole Carriers,” J. Med. Chem.… [cited by applicant]
Markandeya et al., “AsymMetric synthesis of piperidino-benzodiazepines through ‘cation-pool’ host/guest supramolecular approach and their DNA-binding studies,” Asymmetry 21(21-22), pp. 2625-2630 (Nov. 25, 2010). [cited by applicant]
Pfau, Andrea, “Written Opinion of Int'l Searching Authority—International patent application No. PCT/GB2016/051701,” Aug. 10, 2016. [cited by applicant]
Cole, Natalie, “British Search Report—application No. GB1510010.0,” Feb. 26, 2016. [cited by applicant]
Tazuka et al., “Studies on tomaymycin, III., syntheses and antitumor activity of tomaymycin analogs,” The Journal of Antibiotics, 36(12), pp. 1699-1708 (Dec. 1, 1983). [cited by applicant]
Lum, Regina, “Written Opinion and Search Report, Singapore Patent App No. 11201801379S,” Intellectual Property Office of Singapore, Mar. 4, 2019, pp. 1-10. [cited by applicant]
Rahman et al., “GC-Targeted C8-Linked Pyrrolobenzodiazepine-Biaryl Conjugates with Femtomolar in Vitro Cytotoxicity and in Vivo Antitumor Activity in Mouse Models,” Journal of Medicinal Chemistry, 56(7), pp. 2911-2935 (… [cited by applicant]
Brucoli et al., “Novel C8-linked pyrrolbenzodiazepine (PBD)-heterocycle conjugates that recognize DNA sequences containing an inverted CCAAT box,” Bioorganic & Medicinal Chemistry Letters, 21(12), pp. 3780-3783 (Jun. 15… [cited by applicant]
Kumar et al., “Design, synthesis and in vitro cytotoxic studies of novel bis-pyrrolo[2, 1][1,4] benzodiazepine-pyrrole and imidazole polyamide conjugates,” European Journal of Medicinal Chemistry, 40(7), pp. 641-654 (Ju… [cited by applicant]
Jordan, “Tamoxifen: a most unlikely pioneering medicine,” Nature Reviews Drug Discovery, 2, pp. 205-213 (Mar. 2003). [cited by applicant]
Vippagunta et al., “Crystalline solids,” Advanced Drug Delivery Reviews, 48 (1), pp. 3-26 (May 16, 2001). [cited by applicant]
Kamal et al., “AlCl3—Nal assisted cleavage of polymer-bound esters with concomitant amine coupling and azido-reductive cyclization: synthesis of pyrrolobenzodiazepine derivatives, ” Tetrahedron Letters, 54(33), pp. 4435… [cited by applicant]