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Report | Regular issue | Vol 23, No. 5, 1985, pp.1219-1224
Published online, 1st January, 1970
DOI: 10.3987/R-1985-05-1219
Antiinflammatory 2,3-Dihydro-1H-pyrrolizins. II: Addition of 6,7-Diphenyl-2,3-dihydro-1H-pyrrolizine to Domethyl Acetylenedicarboxylate and Diethyl Azosicarboxylate

Gerd Dannhardt* and Ludwig Steindl

*Naturwissenschaftliche Fakultät IV, Universität Regensburg, Universitätsstraße 31, D-93040 Regensburg , Germany


The addition of the litle compound to the acetylene and the azo derivative,resp., leads to C5 functionalized dihydropyrrolizines. Competitive 1 : 1 and 1 : 2 adduct formation is observed using the diethyl azodicarboxylate. A significant antiinflammatory activity is shown for the 5-hydrazopyrrolizine derivative (1 : 1-adduct) .