Re. Armer et al., Anticoccidial activity of novel semi-synthetic analogues of deoxyfrenolicin and frenolicin B (part II), HETEROCYC C, 4(4), 1998, pp. 345-350
Semi-synthetic C-3a and C-4 substituted analogues of the naphthopyranquinon
es, frenolicin B 1, and deoxyfrenolicin 2, have been produced and their bio
logical activity as anticoccidial agents investigated in vivo.