(2-bromo-1-cyclopent-1-enyl)-(2,5-dimethyl-pyrrol-1-yl)-methanone

1-(2-phenylethynylcyclopent-1-enyl)-3-trimethylsilylpropyn-1-ol

1-(2-phenylacetylenylcyclopent-1-enyl)-3-trimethylsilylpropyn-1-one

Acetic acid 1-(2-phenylethynyl-cyclopent-1-enyl)-3-trimethylsilanyl-buta-1,2-dienyl ester

1-(2-phenylacetylenylcyclopent-1-enyl)-3-phenylbuta-1,2-dienyl acetate