| abstract |
Compounds of general formula (1)or salts thereof, exhibiting preventive and therapeutic effects against HIV infectious diseases wherein R<1 >is an optionally substituted five- or six-membered ring group; X<1 >is a free valency or the like; W is a divalent group represented by, e. g., general formula (2)(wherein A and B are each an optionally substituted five- to seven-membered ring; E1 and E4 are each optionally substituted carbon or the like; E2 and E3 are each oxygen or the like; and a and b are each a single bond or a double bond); X<2 >is a divalent group constituting a straight chain moiety; Z<1 >is a divalent cyclic group or the like; Z<2 >is a free valency or the like; and R<2 >is optionally substituted amino or the like. |