5891-07-6Relevant articles and documents
Syntheses de β-sultames (thiazetidines-1,2 dioxyde-1,1)
Champseix, A.,Chanet, J.,Etienne, A.,Berre, A. Lemasson, J. C.,Napierala, C.,Vessiere, R.
, p. 463 - 472 (2007/10/02)
β-sultams (1,2-thiazetidine-1,1-dioxides) are easily prepared by 1-halogensulphonyl-2-aminoalkane cyclisation. Two processes based upon this principle have permitted the preparation of many variously N and C-substituted β-sultams. 1) In the first method 1-chlorosulphonyl-2-aminoalkane hydrochlorides, prepared from taurines or β-aminothiols, cyclised in the presence of base. 2) The second process involves the spontaneous cyclisation of 1-fluorosulphonyl-2-aminoalkanes prepared Michael addition of primary amines to 1-fluorosulphonylethene.
Synthesis and radiopharmacological study of unsaturated derivatives of cysteamine
Mesnard,Miginiac,Fatome,et al.
, p. 247 - 252 (2007/10/02)
Synthesis of many unsaturated compounds derivated from cysteamine has been carried out in the three series : β-aminothioethers, β-aminothiols and thiazolidines. These products are more or less toxic, compared to corresponding saturated derivates. They generally have a higher radioprotective activity. The three most effective have a dose reduction factor equivalent to that of cysteamine, two of them having a lower toxicity.
