Thiophene derivatives of the formula ##STR1## wherein R.sup.1 and R.sup.2 are certain specified substituent groups can be homopolymerized or copolymerized to form polymers which are electroconductive. These polymers find many uses, for example, as EMI/RF shielding materials, in electrochromic display systems, as antistatics, as ion and pH sensors, as battery electrode materials etc.
The present invention provides a compound represented by the formula:
wherein R
1
is an acyl group, R
2
is a hydrocarbon group which may be substituted or the like, R
3
is a hydrocarbon group which may be substituted or the like, R
4
is a hydrocarbon group which may be substituted or the like, n is from 0 to 4, and X is an oxygen atom, a sulfur atom or the like, or a salt thereof. The invention also provides a compound which has a TGR23 antagonist activity and thus is useful for prevention and treatment of cancer.
Polymerisable thiophene monomers, their production and polymers prepared therefrom
申请人:COOKSON GROUP plc
公开号:EP0253594A2
公开(公告)日:1988-01-20
Thiophene derivatives of the formula
wherein R1 and R2 are certain specified substituent groups can be homopolymerised or copolymerized to form polymers which are electroconductive. These polymers find many uses, for example, as EMI/RF shielding materials, in electrochromic display systems, as antistatics, as ion and pH sensors, as battery electrode materials etc.