Tinland B
Res Commun Chem Pathol Pharmacol. 1975 Jan;10(1):173-6.
The antimicrobial activity of a series of 7-mandelamido-3-cephem-4-carboxylic acids was studied using the Free-Wilson method. Electron-withdrawing and lipophilic properties of the substituents are shown to play an important role in the activity.