Cycloaddition
Amino Acid
Pyrrole
Furan
Furfural
Hydroxymethylfurfural (HMF)
5-Hydroxymethylfurfural (5-HMF) is one of the most promising molecules with huge synthetic potential.
https://en.m.wikipedia.org/wiki/Nitrile
https://en.m.wikipedia.org/wiki/Nisin
https://en.m.wikipedia.org/wiki/Nitrone