Amide- and urea-based synthetic anticonvulsants, antihypoxics, and inducers of the hepatic monooxygenase system. IX. Synthesis and search for inducers of the liver cytochrome P-450-dependent monooxygenase system among carbamide-containing heterocyclic compounds
Poly(α-alkyl γ-glutamate)s of microbial origin: I. Ester derivatization of poly(γ-glutamic acid) and thermal degradation
作者:José Melis、Margarita Morillo、Antxon Martı́nez de Ilarduya、Sebastián Muñoz-Guerra
DOI:10.1016/s0032-3861(01)00484-0
日期:2001.11
with a significant reduction in molecular weight. The thermal degradation of PAAG-n was examined by thermogravimetric analysis combined with IR and NMR spectroscopy. At low temperatures (<300°C) decomposition was found to take place by depolymerization with releasing of the corresponding alkyl pyroglutamate. Decarboxylation of PAAG-n to an unsaturated polyamide seemed to be the main process occurring at