methyl 7-(3-((tert-butyldimethylsilyl)oxy)-5-oxocyclopent-1-en-1-yl)-5-(phenylsulfinyl)hepta-5,6-dienoate

methyl 7-(oxan-2-yloxy)hept-5-ynoate

(1S)-1-[(2R)-oxiran-2-yl]prop-2-en-1-ol

(R)-2-((S)-1-methoxyallyl)oxirane

(3R,4S)-3-((tert-butyldimethylsilyl)oxy)-4-methoxyhex-5-enenitrile