Organic compounds having general formula, wherein: - K represents a CH 2 OH or COOR a group; - R a represents a linear or branched C 1 -C 26 alkyl group optionally substituted; - R 1 represents a hydrogen or a linear or branched C 1 -C 26 alkyl group optionally substituted; a linear or branched C 1 -C 26 haloalkyl group optionally substituted; a linear or branched C 1 -C 26 alkoxyl group optionally substituted; a linear or branched C 1 -C 26 alkylthio group optionally substituted; a linear or branched C 2 -C 26 alkenyl group optionally substituted; a linear or branched C 2 -C 26 alkinyl group optionally substituted; a C 3 -C 30 cycloalkyl group optionally condensed or a condensed C 17 cycloalkyl group of the steroid type optionally substituted; a C 3 -C 30 cycloalkoxyl group optionally condensed and optionally substituted; a heterocyclic group optionally substituted; an aryl group optionally substituted; a heteroaryl group optionally substituted; a linear or cyclic C 6 -C 12 group of the saccharide type optionally substituted; a C 1 -C 26 alkylamine group or a C 2 -C 26 dialkylamine group optionally substituted for n different from 0; - R 2 and R 3, the same or different, represent a C 1 -C 3 alkyl group optionally substituted; - R 4 and R 5, the same or different, represent a hydrogen atom, or a linear or branched C 1 -C 6 alkyl group optionally substituted; a linear or branched C 2 -C 6 alkenyl group optionally substituted; a C 3 -C 6 cycloalkyl group optionally substituted; a hydroxyl group; an aryl group optionally substituted; a heteroaryl group optionally substituted; a heterocyclic group optionally substituted; R 4 and R 5 can individually form a cycle together with R 2; - X represents a nitrogen atom; - Z represents a carbon or sulfur atom; - m represents a number ranging from 1 to 5; - n and p represent a number ranging from 0 to 3; - q has the value of 1; Y - represents a phosphite anion H 2 PO 3 -; s has the value of 1 for Z = carbon or the value of 2 for Z = sulfur. - K represents a CH 2 OH or COOR a group; - R a represents a linear or branched C 1 -C 26 alkyl group optionally substituted; - R 1 represents a hydrogen or a linear or branched C 1 -C 26 alkyl group optionally substituted; a linear or branched C 1 -C 26 haloalkyl group optionally substituted; a linear or branched C 1 -C 26 alkoxyl group optionally substituted; a linear or branched C 1 -C 26 alkylthio group optionally substituted; a linear or branched C 2 -C 26 alkenyl group optionally substituted; a linear or branched C 2 -C 26 alkinyl group optionally substituted; a C 3 -C 30 cycloalkyl group optionally condensed or a condensed C 17 cycloalkyl group of the steroid type optionally substituted; a C 3 -C 30 cycloalkoxyl group optionally condensed and optionally substituted; a heterocyclic group optionally substituted; an aryl group optionally substituted; a heteroaryl group optionally substituted; a linear or cyclic C 6 -C 12 group of the saccharide type optionally substituted; a C 1 -C 26 alkylamine group or a C 2 -C 26 dialkylamine group optionally substituted for n different from 0; - R 2 and R 3, the same or different, represent a C 1 -C 3 alkyl group optionally substituted; - R 4 and R 5, the same or different, represent a hydrogen atom, or a linear or branched C 1 -C 6 alkyl group optionally substituted; a linear or branched C 2 -C 6 alkenyl group optionally substituted; a C 3 -C 6 cycloalkyl group optionally substituted; a hydroxyl group; an aryl group optionally substituted; a heteroaryl group optionally substituted; a heterocyclic group optionally substituted; R 4 and R 5 can individually form a cycle together with R 2; - X represents a nitrogen atom; - Z represents a carbon or sulfur atom; - m represents a number ranging from 1 to 5; - n and p represent a number ranging from 0 to 3; - q has the value of 1; Y - represents a phosphite anion H 2 PO 3 -; s has the value of 1 for Z = carbon or the value of 2 for Z = sulfur.