Abstract: Isothiazolones having the general structure ##STR1## where A is a monocyclic or bicyclic ring which may contain up to 3 heteroatoms selected from O, S, and N; R.sup.1 and R.sup.2 are substituent groups such as alkyl, alkoxy, hydroxy, nitro, cyano, amino, and carboxy; and R.sup.5 is alkyl, cycloalkyl, phenyl, and Het. The isothiazolones are useful as anti-retroviral agents, anti-inflammatory agents, and anti-atherosclerotic agents.

Abstract: Antibacterial and antiviral phenylthiols and dithiobisbenzamides have the formula ##STR1## where n is 1 or 2, Y is hydrogen when n is 1, and a single bond when n is 2; and R.sup.1 and R.sup.11 are substituent groups, R.sup.4 is hydrogen or alkyl, and Z is hydrogen, alkyl, cycloalkyl or sulfamoylphenyl.

Abstract: 5-Methyl-6-[[(3,4,5-trimethoxyphenyl)amino]-methyl]-2,4-quinazolinediamine (trimetrexate) has been shown to possess clinical activity against non-small cell lung cancer, head and neck squamous cancers, and breast cancer. The compound also demonstrates therapeutic synergy with several known antineoplastic agents. Methods of treating non-small cell lung cancer, head and neck cancers, and breast cancer by administering trimetrexate alone or in combination with other neoplastic agents is disclosed.

Abstract: Acids, esters, imine acids, imine esters, and imine amides derived from 6-formyl-4,7,9-trihydroxy-1-phenazinecarboxylic acid, methyl ester and from 6-formyl-4,7,9-trihydroxy-8-methyl-1-phenazinecarboxylic acid, methyl ester demonstrate antimicrobial and antineoplastic activity.A purified strain of Streptomyces galanosa, NRRL 15738, is capable of producing 6-formyl-4,7,9-trihydroxy-8-methyl-1-phenazinecarboxylic acid, methyl ester in isolable quantities from a fermentation broth containing assimilable sources of carbon and nitrogen.

Abstract: Substituted 2H-[1]benzopyrano[4,3,2-cd]indazoles, 2H-[1]benzothiopyrano[4,3,2-cd]indazoles, and 2H-[1]benzoselenino[4,3,2-cd]indazoles have demonstrated pharmacological activity against a broad spectrum of Gram-positive and Gram-negative bacteria, yeasts, and fungi, as well as activity against the L1210 and P388 murine leukemia cells lines.Pharmaceutical compositions containing the compounds and methods of employing the compounds in methods of treating bacterial or fungal infections and of inhibiting the growth of neoplasms in mammals are also disclosed.

Abstract: Substituted anthra[1,9-cd]pyrazol-6(2H-ones have antimicrobial activity. Methods for their preparation, use and pharmaceutical compositions are disclosed.

Abstract: The title compositions containing N,N-diethyl-5-methyl-2H-12-benzothiopyrano-4,3,2-cd-indazole-2-ethanamine as the free base (I) or pharmaceutically acceptable acid addition salt, and methods for their use are provided. The compositions are useful for treating tumors in warm blooded animals.

Abstract: Methods for treating psoriasis by administering 2,4-diamino-5-methyl-6-[(3,4,5-trimethoxyanilino)methyl]-quinazoline, 2,4-diamino-5-chloro-6-[(3,4-dichloroanilino)methyl]-quinazoline or a pharmaceutically acceptable acid-addition salt thereof.