Abstract: The subject-matter of the present invention is the use of an aluminosilicate glass to provide a plant with silicon in assimilable form, a method for treating a plant using this glass and a new powder of said glass. According to the invention, this aluminosilicate glass comprises the following constituents in a weight content varying within the limits defined below: SiO2 30-60% Al2O3 10-26% CaO+MgO+Na2O+K2O 15-45%. The invention finds applications in particular in the agricultural field.

Abstract: The present invention relates to solutions including at least one boron complex obtained through the reaction between at least one boron salt, consisting of a borate anion selected from within the group consisting of metaborate anions, tetraborate anions, pentaborate anions, octaborate anions, decaborate anions, and the mixtures thereof, and a cation selected from within the group including sodium cations, potassium cations, ammonium cations, and the mixtures thereof, and at least one polyol and at least one amino compound. The basic boron concentration is greater than 2 wt % of the total weight of the solution. The invention also relates to a method for preparing said solutions and to the uses of said solutions, particularly in the field of agriculture.

Abstract: The present invention relates to the use of at least one compound of formula (I) or (II), in which R1 is H and n is an integer from 2 to 10, for the preparation of a medicament for treating diseases chosen from the group comprising tumour, cancer, viral disease, bacterial disease, fungal disease, disease of the immune system, auto-immune disease or disease linked to a deficiency in immunostimulation, in human beings and warm-blooded animals. The invention also relates to new products having a mannose or mannitol termination as well as a method for preparing them.

Abstract: The present invention relates to the use of at least one compound of formula (I) or (II), in which R1 is H and n is an integer from 2 to 10, for the preparation of a medicament for treating diseases chosen from the group comprising tumour, cancer, viral disease, bacterial disease, fungal disease, disease of the immune system, auto-immune disease or disease linked to a deficiency in immunostimulation, in human beings and warm-blooded animals. The invention also relates to new products having a mannose or mannitol termination as well as a method for preparing them.

Abstract: The present invention relates to a novel method of chemically preparing functionalized derivatives of ?-(1,3)-glucans, enabling obtaining oligosaccharides which are free or which comprise specific groups such as, for example, sulphate, phosphate, methyl, in pre-defined positions. This method includes a reaction between a glycosyl donor of formula (Ia) or (Ib) and a glycosyl acceptor of formula (II), defined in the claims. Application: Preparation of biologically active compounds which can be used in the agricultural, cosmetic or pharmaceutical fields.

Abstract: A therapeutical method comprising administration of a composition comprising an amount of oligo-?-(1,3)-glucan and a pharmaceutically acceptable carrier, to a human being or to a warm-blood animal suffering from a disease selected from the group consisting in a tumor, a cancer, a viral disease, a bacterial disease, a fungal disease, a disease of the immune system, an auto-immune disease or a disease related to a deficiency of immunostimulation, wherein the amount of oligo-?-(1,3)-glucan is effective to treat the disease.

Abstract: The invention concerns a method for preparing Laminaribiose comprising a step for glycoside binding between a donor and an acceptor of glycosyl. The invention is characterized in that the glycosyl donor is in pyranose form and corresponds to formula (II); the glycosyl acceptor is in furanose form and corresponds to formula (III); said binding step is performed in solution in an anhydrous organic solvent, at a temperature ranging between −80° C. and 40° C., for a time interval ranging between 1 minute and 8 hours, in the presence of a suitable promoter.

Abstract: The invention concerns a novel method for preparing by chemical process functionalised &bgr;-(1,3)-glucan derivatives, enabling to obtain free oligosaccharides or comprising specific groups such as, for instance, sulphate, phosphate, methyl, in predetermined positions. Said method consists in reacting a glycosyl donor of formula (Ia) or (Ib) with a glycosyl scavenger of formula (II), as defined in the claims. The invention is useful for preparing biologically active principles for use in the agricultural, cosmetic or pharmaceutical field.