Pyridinium-betain compounds and their use

Details Pyridinium-betain compounds and their use Pyridinium-betain compounds and their use

C - Chemistry, Metallurgy

07

F

C07F 9/6558 (2006.01) A23L 1/226 (2006.01) C07D 405/06 (2006.01)

Patent

CA 2513504

The present invention concerns Pyridinium-Betain compounds of the following general formula (A) R1 is H; R2 is a chemical group formed by a sugar pentose or hexose ring, substituted at C5or C6, respectively, with an acid residue taken from the group - photosphoryl, sulfonyl, or carboxyl, and R2 is connected to the pyridaine ring either at C1 or C2 positions; R3 is taken from the group consisting of OH, including the ionised form O-, R4 is an aliphatic chain (CH2)n, where n is the chain length in the range from n=0 to n=4, R5 is taken from the group consisting of residues - hydroxy, methoxy, ethoxy, methyl, ethyl, furfurylthio and derivatives, and wherein the counter-ion is taken from the group consisting of sodium, potassium, ammonium, calcium, chloride, carbonate, sulphate, phosphate, and the like.

La présente invention concerne des composés de pyridinium-bétaïne de la formule générale (A), dans laquelle R¿1? est H; R¿2? est un groupe chimique formé par un sucre pentose ou un noyau hexose, substitué à la position C5 ou C6, respectivement, un résidu d'acide étant extrait du groupe photosphoryle, sulfonyle ou carboxyle, et R¿2? est relié au noyau pyridine soit à la position C1, soit à la position C2; R¿3? est extrait du groupe constitué par OH, y compris la forme O ionisée; R¿4? est une chaîne aliphatique (CH¿2?)¿n? dans laquelle n est la longueur de la chaîne située dans la plage comprise entre n=0 et n=4; R¿5? est extrait du groupe constitué par des résidus - hydroxy, méthoxy, éthoxy, méthyle, éthyle, furfurylthio et leurs derivés, le contre-ion étant extrait du groupe constitué par sodium, potassium, ammonium, calcium, chlorure, carbonate, sulfate, phosphate et analogues.

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