This article describes the author's efforts on the asymmetric synthesis of substituted c-hetero acids from glycine, glycollic acid and thioglycollic acid employing (lR)-(+)-camphor and camphorsulfonamide as chiral auxiliaries. Extension of the synthetic method toward the synthesis of some optically active natural products is successful. Thus, daunosamine, muricatacin, crobarbatic acid, and DOPA are synthesized in high enantiomeric purity.