申请人:Conner Scott Eugene
公开号:US20090054479A1
公开(公告)日:2009-02-26
The present invention is directed to compounds represented by the following structural formula, Formula I:
wherein:
(a) X is selected from the group consisting of a single bond, O, S, S(O)
2
and N;
(b) U is an aliphatic linker;
(c) Y is selected from the group consisting of C, O, S, NH and a single bond;
(d) E is C(R3)(R4)A or A and wherein
(i) A is selected from the group consisting of carboxyl, tetrazole, C
1
-C
6
alkylnitrile, carboxamide, sulfonamide and acylsulfonamide;
(e) B is selected from the group consisting of S, O, C, and N;
(f) Z is selected from the group consisting of N and C; with the proviso that when B is C then Z is N.