| http://www.w3.org/ns/prov#value | - It has been shown that the antimicrobial activity can be improved by replacing the glycolicester moiety at position 14 by an R--X--CH.sub.2 CO.sub.2 -- group, where R is an aliphatic or aromatic moiety and X is O, S, or NR' (H Egger and H Reinshagen, J Antibiotics, 1976, 29, 923).
|
