(-)-4-hydroxy-6-oxabicyclo[3.2.1]oct-2-en-7-one

2',3,4,5-Tetra-O-acetyl-scyllo-chinicol

(3R)-3r,4c,5t-triacetoxy-1-acetoxymethyl-cyclohexene

(-)-3-去氢莽草酸

(3S,4S,5R)-3,4,5-triacetoxy-1-cyclohexenecarboxylic acid