Abstract: The invention concerns the use of a sulphated polysaccharide capable of being obtained by radical depolymerization of a raw fucan derived from Pheophyceae, said polysaccharide having a molar mass not more than 10,000 g/mol, to obtain a medicine for preventing or treating vascular thrombosis, in particular venous thrombosis, arterial thrombosis and arterial restenosis.

Abstract: The present invention relates, by way of novel industrial products, to the .beta.-D-phenylthioxyloside compounds of the formula ##STR1## in which: X represents a sulfur atom or an oxygen atom;R.sub.1, R.sub.2 and R.sub.3, which are identical or different, each represent a hydrogen atom, a nitro group, a cyano group, a group --CO--R (in which R represents a C.sub.1 -C.sub.4 alkyl group or a trifluoromethyl group), an amino group, an acetamido group (NHCOCH.sub.3), a C.sub.1 -C.sub.4 alkoxy group, a trifluoromethyl group or a phenyl group substituted by one or more cyano, nitro or trifluoromethyl groups, it being possible for R.sub.1 and R.sub.2, taken together, to form, with the phenyl group to which they are bonded, a .beta.-naphthalenyl group which is unsubstituted or substituted by one or more cyano, nitro or trifluoromethyl groups; andY represents the hydrogen atom or an aliphatic acyl group.

Abstract: The present invention relates, by way of novel industrial products which are useful in therapy, to the benzopyranone-.beta.-D-thioxyloside compounds of the formula ##STR1## in which: one of the substituents R or R' is an oxygen atom double-bonded to the corresponding cyclic carbon atom and the other is a group R.sub.1,the symbol represents a double bond conjugated to the CO group provided by one of the substituents R or R',X is a sulfur atom or an oxygen atom,R.sub.1 and R.sub.2, which are identical or different, are each a hydrogen atom, a C.sub.1 -C.sub.4 alkyl group, a halogen atom, a trifluoromethyl group or a phenyl group, it being possible for R.sub.1 and R.sub.2, taken together, to form a 7,8,9,10-tetrahydrodibenzo[b,d]pyran-6-one group or a 1,2,3,4-tetrahydro-9H-xanthen-9-one group with the benzopyranone group to which they are bonded, andY is the hydrogen atom or an aliphatic acyl group.

Abstract: The present invention relates, by way of novel industrial products, to the .beta.-D-phenylthioxyloside compounds of the formula ##STR1## in which: X represents a sulfur atom or an oxygen atom;R.sub.1, R.sub.2 and R.sub.3, which are identical or different, each represent a hydrogen atom, a nitro group, a cyano group, a group --CO--R (in which R represents a C.sub.1 -C.sub.4 alkyl group or a trifluoromethyl group), an amino group, an acetamido group (NHCOCH.sub.3), a C.sub.1 -C.sub.4 alkoxy group, a trifluoromethyl group or a phenyl group substituted by one or more cyano, nitro or trifluoromethyl groups, it being possible for R.sub.1 and R.sub.2, taken together, to form, with the phenyl group to which they are bonded, a .beta.-naphthalenyl group which is unsubstituted or substituted by one or more cyano, nitro or trifluoromethyl groups; andY represents the hydrogen atom or an aliphatic acyl group.These compounds are useful as therapeutic agents, especially as venous antithrombotics.

Abstract: The present invention relates, by way of novel industrial products, to the sulfonylphenyl-.beta.-D-thioxyloside compounds of the formula ##STR1## in which: X is a sulfur atom or an oxygen atom;R is a C.sub.1 -C.sub.4 alkyl group, a substituted amino group NR.sub.1 R.sub.2 (where R.sub.1 and R.sub.2, which are identical or different, are each a C.sub.1 -C.sub.4 alkyl group, it being possible for R.sub.1 and R.sub.2, taken together, to form a piperidinyl or morpholinyl group with the nitrogen atom to which they are bonded) or a phenyl group which is unsubstituted or substituted in the para position by a cyano group or by a halogen atom; andY is the hydrogen atom or an aliphatic acyl group.These compounds are useful in therapeutics, especially as venous antithrombotics.

Abstract: The present invention relates, by way of novel industrial products, to osides selected from the group consisting of:(i) the .beta.-.eta.-phenylthioxylosides of the formula: ##STR1## in which: R represents a hydrogen atom, a halogen atom, a nitro group or a cyano group,A represents the sulfur atom or the oxygen atom,B represents a CH.sub.2, CHOH or CO group andY represents the hydrogen atom or an acyl group; and(ii) epimers thereof when B is CHOH.These products are useful in therapy as antithrombotics.

Abstract: The present invention relates to .beta.-D-phenylthioxyloside compounds selected from the group consisting of:(i) the .beta.-D-phenylthioxylosides of the formula: ##STR1## in which: R.sub.1 and R.sub.2, which can be identical or different, which represent a hydrogen atom or a trifluoromethy or cyano group,A represents CHOH or CO andY represents a hydrogen atom or an acyl group; and(ii) epimers thereof when A is CHOH.The said .beta.-D-phenylthioxyloside compounds are useful in therapy as antithrombotics.

Abstract: The present invention relates, by way of novel industrial products, to osides selected from the group consisting of:(i) the .beta.-D-phenylthioxylosides of the formula: ##STR1## in which: R represents a hydrogen atom, a halogen atom, a nitro group or a cyano group,A represents the sulfur atom or the oxygen atom,B represents a CH.sub.2, CHOH or CO group andY represents the hydrogen atom or an acyl group; and(ii) epimers thereof when B is CHOH.These products are useful in therapy as antithrombotics.