In this paper we present the convenient syntheses of six new guanylhydrazone and aminoguanidine tetrahydropyran derivatives 2–7. The guanylhydrazone 2, 3 and 4 were prepared in 100% yield, starting from corresponding aromatic ketones 8a–c and aminogu...
Antimicrobials have been important medicines used to treat various infections. However, some antibiotics increase the expression of Shiga toxin (Stx). Also, the pervasive use of persistent antibiotics has led to ecotoxicity and antibiotic resistance....
Guanylhydrazones are molecules with great pharmacological potential in various therapeutic areas, including antitumoral activity. Factorial design is an excellent tool in the optimization of a chromatographic method, because it is possible quickly ch...
We report the synthesis and characterization of the novel pyridinium salts from (E)-2-(pyridin-4-ylmethylene)hydrazine-1-carboximidamide. The pyridinium salts were obtained via the reaction of guanylhydrazone derived from pyridine-4-carbaldehyde with...
Due to the promising characteristics of aminoguanidine Schiff bases, ongoing research focuses on synthesizing and characterizing different compounds of this class to establish structure–property relationships. However, the pronounced alkalinity...
Novel compounds based on symmetric and asymmetric 2,6-diacetylpyridine (DAP) Schiff bases were synthesized. A new salt of the symmetric Schiff base 2,6-diacetylpyridine-bis(aminoguanidine), L1∙3HCl∙2H2O, and its zinc(II) complex, [Zn(L1)(...
Pseudotsuga gaussenii is a forest species under protection in China. Propagation via somatic embryogenesis is efficient and needed for recovering this species. In this research, effects of medium supplements, i.e., methylglyoxal-bis (guanylhydrazone)...
Exogenous melatonin can alleviate cold injury in post-harvested fruit during fruit refrigeration. The mechanism of melatonin-mediated cold tolerance is increasingly being focused on in studies. However, in cold + melatonin-treated fruit, the changes...
Exogenous melatonin can elevate the tolerance of plants to drought stress. The mechanism of melatonin-mediated tolerance has been extensively studied. Numerous studies have shown that melatonin treatment can increase contents of osmotic adjustment su...
High temperature is considered a critical abiotic stressor that is increasing continuously, which is severely affecting plant growth and development. The use of heat-resistant rootstock grafting is a viable technique that is practiced globally to imp...