| 摘要 |
A compound having the structure (Formula I), wherein Y is —Y1, —Y2, —Y3, —Y4, —Y5; Y1 is C(O) or C(R1R2); Y2 is O, C(O), P(O)(OH) or CH2, provided that when Y1 is C(O), Y2 is not C(O); R1 is selected from the group consisting of hydrogen and C1-4 alkyl; R2 is selected from the pup consisting of hydrogen, C1-4 alkyl, and —OC(O)C1-4 alkyl; Y3 is O, C(O) or CH2, provided that when Y2 is C(O), then Y3 is not C(O), and further provided that when Y2 is O, then Y3 is not O; Y4 is O or CH2 or is absent, provided that when Y3 is O, then Y4 is not O; Y5 is —(CH2)1-2—(X)0-1—(CH2)0-1— or is absent; X is —O— or —CR3R4—; and R3 and R4 are independently selected from the group consisting of hydrogen and C1-C4 alkyl; or a pharmaceutically acceptable salt thereof, which is useful for treating hypertension.
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