Abstract: Substituted heteroaromatic compounds of formula (A) wherein X is N or CH; in which (a) represents a fused 5, 6 or 7-membered heterocyclic ring and R3 is a group ZR4 wherein Z is joined to R4 through a (CH2)p group in which p is 0, 1, or 2 and Z represents a group V(CH2), V(CF2), (CH2)V, (CF2)V, V(CRR′), V(CHR) or V where R and R′ are each C1-4 alkyl and in which V is a hydrocarbyl group containing 0, 1 or 2 carbon atoms, carbonyl, dicarbonyl, CH(OH), CH(CN), sulphonamide, amide, O, S(O)m or NRb where Rb is hydrogen or Rb is C1-4 alkyl; and R4 is an optionally substituted C3-6 cycloalkyl or an optionally substituted 5, 6, 7, 8, 9 or 10-membered carbocyclic or heterocyclic moiety; or R3 is a group ZR4 in which Z is NRb, and NRb and R4 together form an optionally substituted 5, 6, 7, 8, 9 or 10-membered carbocyclic or heterocyclic moiety, are protein tyrosine kinase inhibitors.

Abstract: The present invention relates to heterocyclic compounds which have been found to have anti-tumour activity. More specifically, the invention concerns pyrrolo[2,3-b]carbazoles and 1H-[1] benzothieno [2,3-f] indoles, methods for their preparation, pharmaceutical formulations containing them and their use as anti-tumour agents. The compounds have low toxicity against normal cell lines whilst exhibiting anti-tumour cell activity.

Abstract: The present invention relates to the use of 2-?4-(4-chlorophenyl)cyclohexyl!-3-hydroxy-1,4-naphthoquinone or a physiologically acceptable salt or other physiologically funtional derivative thereof for the manufacture of a medicament for the treatment and/or prophylaxis of toxoplasmosis in animals, to pharmaceutical compositions for the treatment and/or prophylaxis of toxoplasmosis, comprising said compound as active ingredient and to a method of treating or preventing toxoplasmosis in an animal which comprises administering to said animal an effective amount of said compound.

Abstract: The present invention relates to heterocyclic compounds which have been found to have anti-tumor activity. More specifically, the invention concerns pyrrolo?3,2-b!carbazoles and 1H-?1! benzothieno ?2,3-f! indoles, methods for their preparation, pharmaceutical formulations containing them and their use as anti-tumor agents. The compounds have low toxicity against normal cell lines while exhibiting anti-tumor cell activity.

Abstract: The present invention relates to pharmaceutical compositions for the treatment and/or prophylaxis of protozoal infections caused by Kinetoplastida, Apicomplexa, Anaerobic protozoa and Microsporidia comprising 2-?4-(4-chlorophenyl)cyclohexyl!-3-hydroxy-1,4-naphthoquinone or a physiologically acceptable salt or other functional derivative thereof as active ingredient and to a method of treating or preventing said protozoal infections in an animal which comprises administering to said animal an effective amount of said compound.