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.
以下一般式(I)所表示的新型&bgr;-内酰胺化合物或其药学上可接受的盐,可用作血清降胆固醇剂:其中,A1、A3和A4分别表示氢、卤素、C1-5烷基、C1-5烷氧基、—COOR1、由以下一般式(b)所表示的基团:(b)其中R1表示氢或C1-5烷基,或由以下一般式(a)所表示的基团:(a)其中R2表示—CH2OH、—CH2OC(O)—R1或—CO2—R1;R3表示—OH或—OC(O)—R1;R4表示—(CH2)kR5(CH2)l—,其中k和l分别为0或1以上的整数,且k+l为不超过10的整数;R5表示单键、—CH═CH—、—OCH2—、羰基或—CH(OH)—,但至少其中一个A1、A3和A4为上述一般式(a)所表示的基团;A2表示C1-5烷基、C1-5烷氧基、C1-5烯基、C1-5羟基烷基或C1-5羰基烷基;n、p、q和r分别为0、1或2的整数。