申请人:——
公开号:US20020028813A1
公开(公告)日:2002-03-07
A compound of formula I:
1
or a pharmaceutically acceptable salt, hydrate, ester, solvate, prodrug, metabolite, stereoisomer, or mixtures thereof, wherein:
R
1
is lower alkyl, lower alkenyl or lower alkynyl;
R
9
, when present, is hydrogen or lower alkyl;
Y represents the atoms necessary to form a fused 5- to 6-membered ring that is aromatic or nonaromatic and carbocyclic or heterocyclic;
Z is (i) —CHR
2
CHR
3
— where R
2
and R
3
are independently hydrogen, alkyl, aryl or aralkyl;
(ii) —R
6
C═CR
3
— where R
6
and R
3
are independently hydrogen, lower alkyl, aryl, aralkyl, chlorine, bromine or —NR
7
R
8
, where R
7
and R
8
are independently hydrogen or lower alkyl, or, R
6
and R
3
, taken together, form a fused 5- to 6-membered ring that is aromatic or nonaromatic and carbocyclic or heterocyclic;
(iii) —R
2
C═N—;
(iv) —CR
2
(OH)—NR
7
—; or
(v) —C(O)—NR
7
.