(R)-methyl 2-(dimethylamino)-5-(1-(4-methylphenylsulfonamido)butyl)thiophene-3-carboxylate

(R)-methyl 2-(dimethylamino)-5-(2-methyl-1-(4-methylphenylsulfonamido)propyl)thiophene-3-carboxylate

(R,E)-methyl 2-(dimethylamino)-5-(1-(4-methylphenylsulfonamido)hept-4-enyl)thiophene-3-carboxylate

(R,Z)-methyl 2-(dimethylamino)-5-(1-(4-methylphenylsulfonamido)hept-4-enyl)thiophene-3-carboxylate

(R)-methyl 5-(2-(tert-butyldimethylsilyloxy)-1-(4-methylphenylsulfonamido)ethyl)-2-(dimethylamino)thiophene-3-carboxylate