| 摘要 |
The present invention provides compounds of formula I wherein R1 is -H, -OH, -O(C1-C4 alkyl), -OCO(C1-C6 alkyl), -OCOO(C1-C6 alkyl), -OCOAr, -OCOOAr, or -OSO2(C2-C6 alkyl); R2 is -OH, -O(C1-C4 alkyl), -OCO(C1-C6 alkyl), -OCOO(C1-C6 alkyl), -OCOAr, -OCOOAr, or -OSO2(C2-C6 alkyl); R3 is 1-piperidinyl, 1-pyrrolidinyl, methyl-1-pyrrolidinyl, dimethyl-1-pyrrolidinyl, 4-morpholino, dimethylamino, diethylamino, diisopropylamino, or 1-hexamethyleneimino; and n is 2 or 3; or a pharmaceutically acceptable salt or solvate thereof.
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