HETEROCYCLIC-SYSTEMS CONTAINING BRIDGEHEAD NITROGEN ATOM - SYNTHESIS,STEREOCHEMISTRY AND BIOACTIVITY OF TRANS-8,8A-DIHYDRO-(4H)-[2H]-PYRAZOLO[3',4' 4,5]THIAZOLO[3,2-B]-S-TETRAZINES/
J. Mohan, HETEROCYCLIC-SYSTEMS CONTAINING BRIDGEHEAD NITROGEN ATOM - SYNTHESIS,STEREOCHEMISTRY AND BIOACTIVITY OF TRANS-8,8A-DIHYDRO-(4H)-[2H]-PYRAZOLO[3',4' 4,5]THIAZOLO[3,2-B]-S-TETRAZINES/, Indian Journal of Heterocyclic Chemistry, 8(1), 1998, pp. 7-10
yl-(4H)-[2H]thiazolo[3,2-b]-s-tetrazine-6(7H)-ones (2) have been synth
esized in a single step by condensation of 6,6-diethyl-1,2,4,5-tetrahy
dro-s-tetrazin-3-thione (1) with ethyl chloroacetate and aldehydes in
presence of pyridine and piperidine. Condensation of 2 with arylhydraz
ines in presence of anhyd sodium acetate furnished ryl-trans-8,8a-dihy
dro(4H)-[2H]pyrazolo[3',4':4,5] thiazolo [3,2-b]-s-tetrazines (3). The
antibacterial and antifungal activity of some of the compounds have b
een evaluated.