methyl 2,3,4,6-tetra-O-acetyl-1-(2-furyl)-α-D-mannopyranoside

1-allyl-3-hydroxy-3-(2'-oxopropyl)indolin-2-one

4-p-toluidino-[1,2]naphthoquinone-1-p-tolylimine

4-hydroxy-3,3-bis-(hydroxymethyl)-2-butanoate

2,4,4-trimethyl-5-oxo-pyrrolidine-2-carboxylic acid