P. Duspara et al., The biosynthesis of pramanicin: intact incorporation of serine and absolute configuration of the antibiotic, CHEM COMMUN, (23), 1998, pp. 2643-2644
Biosynthetic incorporation of isotopically labelled serines into pramanicin
1 in Stagonospora sp. ATCC 74235 shows that L-serine is incorporated as an
intact entity with all four bonds to the alpha-carbon retained; thus 1 is
assigned the 5S absolute configuration.