Beta-lactam compounds process for reproducing the same and serum cholesterol-lowering agents containing the same
申请人:——
公开号:US20040063929A1
公开(公告)日:2004-04-01
Novel &bgr;-lactam compounds represented by the following general formula (I) or pharmaceutically acceptable salts thereof which are useful as serum cholesterol-lowering agents: (I) wherein A
1
, A
3
and A
4
represent each hydrogen, halogen, C
1-5
alkyl, C
1-5
alkoxy, —COOR
1
, a group represented by the following general formula (b): (b) wherein R
1
represents hydrogen or C
1-5
alkyl, or a group represented by the following general formula (a): (a) wherein R
2
represents —CH
2
OH, —CH
2
OC(O)—R
1
or —CO
2
—R
1
; R
3
represents —OH or —OC(O)—R
1
; R
4
represents —(CH
2
)
k
R
5
(CH
2
)
l
— wherein k and l are each 0 or an integer of 1 or above provided k+l is an integer of not more than 10; and R
5
represents a single bond, —CH═CH—, —OCH
2
—, carbonyl or —CH(OH)—; provided that at least one of A
1
, A
3
and A
4
is a group represented by the above formula (a); A
2
represents C
1-5
alkyl, C
1-5
alkoxy, C
1-5
alkenyl, C
1-5
hydroxyalkyl or C
1-5
carbonylalkyl; and n, p, q and r are each an integer of 0, 1 or 2.