The invention is a compound of the formula
1
wherein
R is
a) —C(O)(CH
2
)
n
C(O)OH,
b)
2
wherein R
1
is —N(R
2
)(R
3
), or is a five or six member aromatic or non-aromatic heterocyclic ring having one or more heteroatoms selected from nitrogen, oxygen or sulfur, unsubstituted or substituted by lower alkyl,
c) —P(O)(OH)
2
, or is
d) —C(O)(CH
2
)
n
NHC(O)(CH
2
)
n
N(R
2
)(R
3
); and
R
2
/R
3
are hydrogen or lower alkyl;
n is 1, 2, 3 or 4;
or a pharmaceutically acceptable acid addition salt thereof.
该发明是一种具有以下结构的化合物:
其中
R 是
a) —C(O)(
CH2)nC(O)OH,
b) —N(R2)(R3),
或者是具有一个或多个来自氮、氧或
硫的杂原子的五元或六元芳香或非芳香杂环,未取代或被低碳基取代,
c) —P(O)(OH)2,
或者是
d) —C(O)( )nNHC(O)( )nN(R2)(R3);
R2/R3 是氢或低碳基;
n 是 1、2、3 或 4;
或其药用可接受的酸盐。