Ring Transformations of Semicyclic 1,3-Dicarbonyl Heteroanalogs; I. Synthesis of SemicyclicN-Acyl- andN-(Aminocarbonyl)amidine Derivatives and Their Ring Transformation to 5-(ω-Aminoalkyl)-1,2,4-triazoles
Ring transformation with bridged 1,3-dicarbonyl heteroanalogues, III 5-(ω-aminoalkyl)-1,2,4-oxadiazoles by ring-transformations of 3-methylthio-2-aza-3-propeniminium salts
作者:Michael Pätzel、JÜRgen Liebscher
DOI:10.1002/ardp.2503241205
日期:——
3‐Methylthio‐2‐aza‐3‐propeniminium salts 5 react with hydroxylamine after ringtransformation under formation of 5‐(ω‐aminoalkyl)‐1,2,4‐oxadiazole hydroiodides 4 HI, which show a remarkable antitussive activity.