Discovery of Acylsulfonohydrazide-Derived Inhibitors of the Lysine Acetyltransferase, KAT6A, as Potent Senescence-Inducing Anti-Cancer Agents
摘要:
A high-throughput screen designed to discover new inhibitors of histone acetyltransferase KAT6A uncovered CTX-0124143 (1), a unique aryl acylsulfonohydrazide with an IC50 of 1.0 mu M. Using this acylsulfonohydrazide as a template, we herein disclose the results of our extensive structure-activity relationship investigations, which resulted in the discovery of advanced compounds such as 55 and 80. These two compounds represent significant improvements on our recently reported prototypical lead WM-8014 (3) as they are not only equivalently potent as inhibitors of KAT6A but are less lipophilic and significantly more stable to microsomal degradation. Furthermore, during this process, we discovered a distinct structural subclass that contains key 2-fluorobenzenesulfonyl and phenylpyridine motifs, culminating in the discovery of WM-1119 (4). This compound is a highly potent KAT6A inhibitor (IC50 = 6.3 nM; K-D = 0.002 mu M), competes with Ac-CoA by binding to the Ac-CoA binding site, and has an oral bioavailability of 56% in rats.
Discovery of Acylsulfonohydrazide-Derived Inhibitors of the Lysine Acetyltransferase, KAT6A, as Potent Senescence-Inducing Anti-Cancer Agents
摘要:
A high-throughput screen designed to discover new inhibitors of histone acetyltransferase KAT6A uncovered CTX-0124143 (1), a unique aryl acylsulfonohydrazide with an IC50 of 1.0 mu M. Using this acylsulfonohydrazide as a template, we herein disclose the results of our extensive structure-activity relationship investigations, which resulted in the discovery of advanced compounds such as 55 and 80. These two compounds represent significant improvements on our recently reported prototypical lead WM-8014 (3) as they are not only equivalently potent as inhibitors of KAT6A but are less lipophilic and significantly more stable to microsomal degradation. Furthermore, during this process, we discovered a distinct structural subclass that contains key 2-fluorobenzenesulfonyl and phenylpyridine motifs, culminating in the discovery of WM-1119 (4). This compound is a highly potent KAT6A inhibitor (IC50 = 6.3 nM; K-D = 0.002 mu M), competes with Ac-CoA by binding to the Ac-CoA binding site, and has an oral bioavailability of 56% in rats.
Compound of formula I:
wherein:
A is selected from:
(i)
where RF1 is H or F;
(ii)
(iii) a N-containing C6 heteroaryl group; and
B is
where X1 is either CRF2 or N, where RF2 is H or F; X2 is either CR3 or N, where R3 is selected from H, Me, Cl, F OMe; X3 is either CH or N; X4 is either CRF3 or N, where RF3 is H or F; where only one or two of X1, X2, X3 and X4 may be N; and
R4 is selected from I, optionally substituted phenyl, optionally substituted C5-6 heteroaryl; optionally substituted C1-6 alkyl and optionally substituted C1-6 alkoxy, which are useful in the treatment of a condition ameliorated by the inhibition of MOZ.
式 I 的化合物:
其中
A 选自
(i)
其中 RF1 为 H 或 F;
(ii)
(iii) 含 N 的 C6 杂芳基;以及
B 是
其中 X1 是 CRF2 或 N,其中 RF2 是 H 或 F;X2 是 CR3 或 N,其中 R3 选自 H、Me、Cl、F OMe;X3 是 CH 或 N;X4 是 CRF3 或 N,其中 RF3 是 H 或 F;其中 X1、X2、X3 和 X4 中只有一个或两个可以是 N;以及
R4 选自 I、任选取代的苯基、任选取代的 C5-6 杂芳基、任选取代的 C1-6 烷基和任选取代的 C1-6 烷氧基,它们可用于治疗通过抑制 MOZ 而改善的病症。
ARYL SULFONOHYDRAZIDES
申请人:MONASH UNIVERSITY
公开号:US20180222857A1
公开(公告)日:2018-08-09
Compound of formula I:
wherein:
A is selected from:
(i)
where R
F1
is H or F;
(ii)
(iii) a N-containing C
6
heteroaryl group; and
B is
where X
1
is either CR
F2
or N, where R
F2
is H or F; X
2
is either CR
3
or N, where R
3
is selected from H, Me, Cl, F OMe; X
3
is either CH or N; X
4
is either CR
F3
or N, where R
F3
is H or F; where only one or two of X
1
, X
2
, X
3
and X
4
may be N; and R
4
is selected from I, optionally substituted phenyl, optionally substituted C
5-6
heteroaryl; optionally substituted C
1-6
alkyl and optionally substituted C
1-6
alkoxy, which are useful in the treatment of a condition ameliorated by the inhibition of MOZ.