title: Synthesis of some new biologically active bis-(thiadiazolotriazines) and bis-(thiadiazolotriazinyl) alkanes.
abstract: 4-Amino-3-mercapto-1,2,4-triazin-5(4H)-ones (1) were condensed with dicarboxylic acids 2 to yield bis-(4-oxo-4H-1,3,4-thiadiazolo[2,3-c]-1,2,4-triazin-7-yl)alkanes (3b-d,f-h,j-l,n-p) and bis-thiadiazolotriazines (3a,e,i,m). All the newly synthesised compounds were characterised by analytical, IR, NMR and mass spectral studies. Some of the newly synthesised compounds were screened for their antibacterial and antifungal properties. Among the tested compounds, compound 7,7'-(1,4-butanediyl)-his-(3-t-butyl-4-oxo-4H-1,3,4-thia-diazolo[2,3-c]-1,2,4-triazine (3p) exhibited highest degree of antifungal activity.
authors.affiliation: Department of P. G. Studies and Research in Chemistry, Mangalore University, Mangalagangothri, Karnataka, India. hollabs@yahoo.com
authors.forename: B S
authors.initials: BS
authors.lastname: Holla
authors.forename: R
authors.initials: R
authors.lastname: Gonsalves
authors.forename: B S
authors.initials: BS
authors.lastname: Rao
authors.forename: S
authors.initials: S
authors.lastname: Shenoy
authors.forename: H N
authors.initials: HN
authors.lastname: Gopalakrishna
mesh_terms: D000473:Alkanes / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D000890:Anti-Infective Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D000935:Antifungal Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D019281:Dimerization; D008826:Microbial Sensitivity Tests; D013057:Spectrum Analysis; D013329:Structure-Activity Relationship; D013830:Thiadiazoles / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D014227:Triazines / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*
chemical_list: D000473:Alkanes; D000890:Anti-Infective Agents; D000935:Antifungal Agents; D013830:Thiadiazoles; D014227:Triazines