<unk>  as such cannot be isolated from garcinia fruits or hibiscus sabdariffa fruits.<unk>  exist in both the open and lactone forms. The presence of two chiral centres in the molecule is exploited to construct molecular skeletons that are otherwise difficult to synthesize, thus demonstrating the lactones use as chirons.
Hydroxycitric acid
Dichloroacetic acid
Orthosilicic acid
Orellanine
Sodium glycerophosphate
Epoetin beta
Kaurenoic acid
Selenous acid