Lipophilic benzothiophenes

Abstract

The invention provides novel benzothiophenes of the formula (I): ##STR1## wherein R.sub.1 is N-pyrrolidinyl or N-piperidinyl; R.sub.2 and R.sub.3 are independently hydrogen,--CO--(C.sub.10 -C.sub.22 alkyl), --CO--(C.sub.10 -C.sub.22 branched alkyl), --CO--(C.sub.10 -C.sub.22 alkenyl), --CO--(C.sub.10 -C.sub.22 polyalkenyl), --CO--(C.sub.10 -C.sub.22 alkynyl),or --CO--(CH.sub.2).sub.n COR.sub.4 ; provided R.sub.2 and R.sub.3 are not both dodecanoyl, and one of R.sub.2 or R.sub.3 is not hydrogen R.sub.4 is -3-cholesteryl or --O(CH.sub.2).sub.2 (OR.sub.5)CH.sub.2 OR.sub.6 ; R.sub.5 and R.sub.6 are independently hydrogen, --CO--(C.sub.10 -C.sub.22 alkyl), --CO--(C.sub.10 -C.sub.22 branched alkyl), --CO--(C.sub.10 -C.sub.22 alkenyl), --CO--(C.sub.10 -C.sub.22 polyalkenyl), or --CO--(C.sub.10 -C.sub.22 alkynyl); provided one of R.sub.5 or R.sub.6 is not hydrogen; n is 0-4; and pharmaceutically acceptable salts and solvates thereof. The present invention further provides pharmaceutical compositions containing compounds of formula I, and the use of such compounds.

Dependencies are inferred from the claim text.