(2R,6R)-N-methyl-2-[(S)-1-triisopropylsilyloxyethyl]-6-(thiophen-2-yl)-[1,3]oxazinan-4-one

2-thiophenyl-(trimethylsilyloxy)-acetonitrile

thiophene-2-carboxaldehyde dimethylhydrazone

tert-butylthiophen-2-ylmethylenamine