| abstract |
Novel benzothiophenes and intermediates therefor, are provided by the present invention. The benzothiophenes have the formulan n wherein R 1 , R 2 , and R 3 are independently -OH, -OCO(C 1 -C 6 alkyl), -O(CO)O(C 1 -C 6 alkyl), -OCO-Ar, where Ar is phenyl or substituted phenyl, or -O(CO)O-phenyl; and R 4 is N-pyrrolidinyl, N-piperidinyl, or N-hexamethyleneimino; or a pharmaceutically acceptable salt or solvate thereof. |