One pot alkoxylation at position 7 of 6-arylpyrazino [2,3c][1,2,6]thiadiazine 2,2-dioxides with NBS or NCS in the appropriate alcohol is described. Rationalization of the mechanism of the reaction, which does not proceed through the in-
Pyrazino[2,3-c]-1,2,6-thiadiazine 2,2-dioxides. Synthesis of SO2 analogues of folic acid antagonists
✍ Scribed by Alkorta, Ibon ;Goya, Pilar ;Páez, Juan Antonio ;Pérez, Concepción
- Publisher
- John Wiley and Sons
- Year
- 1991
- Tongue
- English
- Weight
- 239 KB
- Volume
- 1991
- Category
- Article
- ISSN
- 0947-3440
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✦ Synopsis
Abstract
The synthesis of novel analogues of foric acid (FA) antagonists derived from the pyrazino[2,3‐c]‐1,2,6‐thiadiazine 2,2‐dioxide system incorporating the glutamic acid side chain at the 7‐position is described. No significant DHFR inhibition of cytotoxic activity has been found with these compounds.
📜 SIMILAR VOLUMES
## GI ucosidationa of Q a m i n o -8 H -p ~o C 3 -c l [1,2,6llrhiadiazifie 2.2dioxide and its 6,7-dimetbyi-and 6,7-diphenyi derivatives via the "siiylation method" are described. The reaction favors N-1 substitution and the te~-U-acetylglucopyranosyl derivatives j, 6, and 7 as well as the free nud
Condensation of diarninothiadiazine l,l-dioxides 1 or 8 with 3tkcto acid cstcrs 2,6]thiadiazinc '.?-dioxides 2-4 and 9. Further chemical transformations yicld (7-substituted derivatives. Thc structures of the newly synthcsizcd compounds arc discussed on the basis of 'H-and I3C-NMR data, UV spcctra a