Synthesis, Identification and Anti-candidaProperties of Some NewBis (Five, Six, Seven-membered Heterocycles) AttachedPyrrole Rings

Abstract

This research involves preparation of many bisheterocycles attached to pyrrole rings have been synthesized by the stepwise procedure such asbis(1,2-dihydropyridazine-3,6-dione) (3),bis(2,3dihydrophthalazine-1,4-dione) (4) and bis(tetrahydropyridazine-3,6-dione) (5) derivatives of pyrrole. Further the bis(3,5-dimethyl-1H-pyrazol-1-yl)methanone (6), bis(3-methyl-1H-pyrazol5(4H)-one) (7) and bis(4H-1,3,4-oxadiazin-6(5H)-one) (8) pyrrole derivatives also prepared in good yields. Furthermore, series of bis-benzothiazine (10a-c), bis-benzoxathiazepine (11a-c)and bis-quinazoline compounds (12a-c) attached to pyrrole moieties also have been synthesized successfully.Structures of the newly synthesized compounds were established by physicochemical, elemental analysis CHNS, FTIR, H-NMR and C-NMR spectroscopic methods. The new synthesized agents were evaluated for their in vitro inhibitory effectagainst several candida isolates. Some of the evaluated compounds possessed good activities compared to a fluconazole, nystatin and clotrimazole standard antifungal drugs.

Keywords

• Synthesi
• identification
• anti-candida
• bis heterocycles
• pyrrole rings