Conformational Study of Succinic and Glutaric β-Alanine Derivatives:  Resistance of β-Alanine Amides To Form Intramolecular Hydrogen Bonds GungBenjamin W. ZhuZhaohai 1997 Conformational Study of Succinic and Glutaric β-Alanine Derivatives:  Resistance of β-Alanine Amides To Form Intramolecular Hydrogen Bonds