(R,Z)-methyl 2-diazo-5-hydroxy-3-oxotetradec-8-enoate

(R.Z)-methyl 2-diazo-3-oxo-5-((triethylsilyl)oxyl)tetradec-8-enoate

(1R,2R,3S)-methyl 2-((Z)-oct-2-en-1-yl)-5-oxo-3-((triethylsilyl)oxy)cyclopentanecarboxylate