14486-52-3Relevant articles and documents
S-methylation of N-containing heterocyclic thiols with conjugated acids of methoxy groups
Shimizu, Masao,Shimazaki, Teruaki,Kon, Yoshihiro,Konakahara, Takeo
, p. 413 - 420 (2010)
2-Mercaptopyridine-3-carboxylic acid reacts with methanol under acidic conditions to afford the corresponding S-methylated methyl ester, methyl 2-methylthiopyridine-2-carboxylate. Such S-methylation occurred for various N-containing heterocyclic thiols wi
Applications of 15N NMR to a Study of Tautomerism in Some Monocyclic Azoles
Bojarska-Olejnik, E.,Stefaniak, L.,Witanowski, M.,Hamdi, B. T.,Webb, G. A.
, p. 166 - 169 (1985)
15N NMR shielding measurements reveal that thiolo-imidazole and -tetrazole exist almost entirely as the thione form.Quantitative estimates of the position of tautomerism in 1,2,3-triazole and tetrazole are obtained.The reported assignments are supported by means of INDO/S-SOS shielding calculations.
1-dethia-2-thia-cephalosporanic acids
-
, (2008/06/13)
Novel 1-dethia-2-thia-cephalosporanic acid derivatives of the formula STR1 wherein R is selected from the group consisting of STR2 Ra is an organic radical, Ri and Rj are individually selected from the group consisting of hydrogen, aliphatic, aromatic and heterocycle or taken together with the nitrogen atom to which they are attached form an optionally substituted cycle or Rb NH--, Rb is optionally substituted carbocyclic or heterocyclic aryl, R1 and --COM are as defined in the specification, R4 is hydrogen or methoxy, n2 is 0, 1 or 2 and their non-toxic, pharmaceutically acceptable acid addition salts in racemic or optically active form having antibiotic activity and their preparation and novel intermediates.