申请人:Drysdale Martin James
公开号:US20100179138A1
公开(公告)日:2010-07-15
Isoxazoles of formula (A) or (B) are inhibitors of HSP90 activity, and useful for treatment of, for example cancers:
wherein R
1
, is a group of formula (IA): —Ar
1
-(Alk
1
)
p
-(Z)
r
-(Alk
2
)
s
-Q, wherein in any compatible combination Ar
1
is an optionally substituted aryl or heteroaryl radical, Alk
1
and Alk
2
are optionally substituted divalent C
1
-C
6
alkylene or C
2
-C
6
alkenylene radicals, p, r and s are independently 0 or 1, Z is -0-, —S—, —(C═O)—, —(C═S)—, —SO.sub.2-, —C(═O)O—, —C(═O)NR
A
—, —C(═S)NR
A
—, —SO
2
NR
A
—, —NR
A
C(═O)—, —NR
A
SO
2
—or —NR
A
— wherein R
A
is hydrogen or C
1
-C
6
alkyl, and Q is hydrogen or an optionally substituted carbocyclic or heterocyclic radical; R
2
is (i) a group of formula (IA) above or (ii) a carboxamide radical; or (iii) a non aromatic carbocyclic or heterocyclic ring wherein a ring carbon is optionally substituted, and/or a ring nitrogen is optionally substituted by a group of formula -(Alk
1
)
p
-(Z)
r
-(Alk
2
)
s
-Q wherein Q, Alk
1
, Alk
2
, Z, p, r and s are as defined above in relation to group (IA); and R
3
is hydrogen, optionally substituted cycloalkyl, cycloalkenyl, C
1
-C
6
alkyl, C
1
-C
6
alkenyl, or C
1
-C
6
alkynyl; or a carboxyl, carboxamide, or carboxyl ester group.
式(A)或(B)的异噁唑是HSP90活性的抑制剂,可用于治疗癌症,例如:其中R1是以下式(IA)的基团:—Ar1-(Alk1)p-(Z)r-(Alk2)s-Q,其中在任何兼容的组合中,Ar1是可选取代的芳基或杂环芳基基团,Alk1和Alk2是可选取代的二价C1-C6烷基或C2-C6烯基基团,p,r和s独立地为0或1,Z为-0-,—S—,—(C═O)—,—(C═S)—,—SO.sub.2-,—C(═O)O—,—C(═O)NRA—,—C(═S)NRA—,—SO2NRA—,—NRAC(═O)—,—NRASO2—或—NRA—,其中RA为氢或C1-C6烷基,并且Q为氢或可选取代的碳环或杂环基团;R2为(i)上述式(IA)的基团或(ii)一个羧酰胺基团;或(iii)一个非芳香碳环或杂环环,其中一个环碳原子可选取代,和/或一个环氮原子可选取代为以下式的基团-(Alk1)p-(Z)r-(Alk2)s-Q,其中Q,Alk1,Alk2,Z,p,r和s如上所述定义于基团(IA);和R3为氢,可选取代的环烷基,环烯基,C1-C6烷基,C1-C6烯基或C1-C6炔基;或羧基,羧酰胺基或羧酸酯基。