SEARCH Articles Figures Tables A-Substituted amino acid derivatives Alkyl-substituted a,-Unsaturated Carbonyl Derivatives Nucleophilic a-Substitution of Carbonyl Derivatives via Non-PTC Pd-Catalyzed a-Substitution of Enolates and Related Derivatives Substituted derivatives Substitution of a-Amino Acid Derivatives via PTC Triazole-Substituted Oleanolic Acid Derivatives as Anticancer Agents