| abstract |
Compound of formula: ** Formula ** or a pharmaceutically acceptable salt, prodrug, or a metabolite thereof, wherein Y is an organic acid functional group, or an amide or ester thereof comprising up to 12 carbon atoms; or Y is hydroxymethyl or an ether thereof comprising up to 12 carbon atoms; or Y is a tetrazolyl functional group; X1 and X2 are independently CH, O, or S; and R7 is a linear alkyl comprising from 3 to 7 carbon atoms. |