Describir: Synthesis and Characterization of New Racemic α-Heterocyclic α,α-Diaminoester and α,α-Diamino Acid Carboxylic: 2-Benzamido-2-[(Tetrahydro-Furan-2-Ylmethyl)Amino]Acetate and 2-Benzamido-2-[(Tetrahydro-Furan-2-Ylmethyl)Amino] Acetic Acid