7-[2-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-3-methyl-4,7-dihydro-5H-thieno[2,3-c]pyran-2-carboxylic acid amide

tert-butyl-[2-(2-iodo-4,5-dihydro-7H-thieno[2,3-c]pyran-7-yl)ethoxy]dimethylsilane

7-(2-tert-butyldimethylsilanyloxyethyl)-4,5-dihydro-7H-thieno[2,3-c]pyran-2-carboxamide

7-[2-(tert-butyldimethylsilanyloxy)ethyl]-3-chloro-4,5-dihydro-7H-thieno[2,3-c]pyran-2-carboxylic acid

7-[2-(tert-butyldimethylsilanyloxy)ethyl]-3-methyl-4,5-dihydro-7H-thieno[2,3-c]pyran-2-carboxylic acid