The invention provides compounds of the formula (I):
or salts, tautomers, solvates and N-oxides thereof; wherein R
1
is hydroxy or hydrogen; R
2
is hydroxy; methoxy or hydrogen; provided that at least one of R
1
and R
2
is hydroxy; R
3
is selected from hydrogen; halogen; cyano; optionally substituted C
1-5
hydrocarbyl and optionally substituted C
1-5
hydrocarbyloxy; R
4
is selected from hydrogen; a group —(O)
n
—R
7
where n is 0 or 1 and R
7
is an optionally substituted acyclic C
1-5
hydrocarbyl group or a monocyclic carbocyclic or heterocyclic group having 3 to 7 ring members; halogen; cyano; hydroxy; amino; and optionally substituted mono- or di-C
1-5
hydrocarbyl-amino; or R
3
and R
4
together form a monocyclic carbocyclic or heterocyclic ring of 5 to 7 ring members; and NR
5
R
6
forms an optionally substituted bicyclic heterocyclic group having 8 to 12 ring members of which up to 5 ring members are heteroatoms selected from oxygen, nitrogen and sulphur.
The compounds have activity as Hsp90 inhibitors.
该发明提供了式(I)的化合物或其盐、互变异构体、溶剂合物和N-氧化物;其中R1为羟基或氢;R2为羟基、甲氧基或氢;但至少其中一个为羟基;R3选择氢、卤素、
氰基、可选取代的C1-5烃基或可选取代的C1-5烃氧基;R4选择氢、—(O)n—R7基团,其中n为0或1,R7为可选取代的非环C1-5烃基或有3至7个环成员的单环碳环或杂环基团;还可以选择卤素、
氰基、羟基、
氨基和可选取代的单基或双基C1-5烃基
氨基;或R3和R4共同形成5至7个环成员的单环碳环或杂环;NR5R6形成一个有8至12个环成员的可选取代的双环杂环基团,其中最多有5个环成员为氧、氮和
硫的杂原子。这些化合物具有作为Hsp90
抑制剂的活性。