The invention relates to novel disaccharides of formula (I), wherein R.sup.1 is selected from the group consisting of hydrogen, linear or branched (C.sub.1 -C.sub.4) alkyl, phenylalkyl with less than ten carbon atoms and --COCH.sub.3 ; R.sup.2 is selected from the group consisting of hydrogen, --COCH.sub.3 and SO.sub.3 M; R.sup.3 is selected from the group consisting of hydrogen, linear or branched (C.sub.1 -C.sub.4) alkyl, phenylalkyl with less than ten carbon atoms, --COCH.sub.3 and y --COPh, Ph being phenyl; G is selected from amongst --COOR.sup.4 and --COOM, R.sup.4 is selected from the group consisting of hydrogen, (C.sub.1 -C.sub.2)-alkyl and arylalkyl with less than sixteen carbon atom; A is selected from the group consisting of hydrogen, --SO.sub.3 H, --SO.sub.3 M and --COCH.sub.3 ; B is selected from the group consisting of hydrogen, --SO.sub.3 H, --SO.sub.3 M and --COCH.sub.3, wherein either A or B are necessarily either --SO.sub.3 H or --SO.sub.3 M, M being a an organic or metallic cation. Said compounds can be used as anti-arthritic agents, anti-inflammatory agents or to control blood coagulation. ##STR1##

_ invenção relacion novela disaccharides fórmula (i), wherein R.sup.1 est selecion grupo consisting.of hidrogênio, linear ou ramific (C.sub.1 - C.sub.4) alkyl, phenylalkyl com menos do que dez carbono átomo e -- COCH.sub.3; _ R.sup.2 est selecion grupo consisting.of hidrogênio, -- COCH.sub.3 e SO.sub.3 m; _ R.sup.3 est selecion grupo consisting.of hidrogênio, linear ou ramific (C.sub.1 - C.sub.4) alkyl, phenylalkyl com menos do que dez carbono átomo, -- COCH.sub.3 e y -- COPh, ph est phenyl; _ g est selecion amongst -- COOR.sup.4 e -- coom, R.sup.4 est selecion grupo consisting.of hidrogênio, (C.sub.1 _ - C.sub.2)-alkyl e arylalkyl com menos do que dezesseis carbono átomo; _ um est selecion grupo consisting.of hidrogênio, -- SO.sub.3 h, -- SO.sub.3 m e -- COCH.sub.3; _ b est selecion grupo consisting.of hidrogênio, _ -- SO.sub.3 h, -- SO.sub.3 m e -- COCH.sub.3, wherein um ou um ou b est necessário um ou -- SO.sub.3 h ou -- SO.sub.3 m, m est um um orgânico ou metálico cation. _ dito combin poss est used como anti-arthritic agente, anti-inflammatory agente ou controle sangue coagulation. _ ## STR1 ##