Methods for the production of 2,4-dihydroxybutyrate (2,4-DHB) from erythrose and other four-carbon sugars are disclosed. The improved methods facilitate the production of 2,4-DHB that is a precursor for biorenewable and animal nutrition chemicals among others.

Methods for the production of 2,4-dihydroxybutyrate (2,4-DHB) from erythrose and other four-carbon sugars are disclosed. The improved methods facilitate the production of 2,4-DHB that is a precursor for biorenewable and animal nutrition chemicals among others.

Methods for the production of 2,4-dihydroxybutyrate (2,4-DHB) from erythrose and other four-carbon sugars are disclosed. The improved methods facilitate the production of 2,4-DHB that is a precursor for biorenewable and animal nutrition chemicals among others.

Various processes for preparing aldaric acids, aldonic acids, uronic acids, and/or lactone(s) thereof are described. For example, processes for preparing a C.sub.2-C.sub.7 aldaric acid and/or lactone(s) thereof by the catalytic oxidation of a C.sub.2-C.sub.7 aldonic acid and/or lactone(s) thereof and/or a C.sub.2-C.sub.7 aldose are described.

Various processes for preparing aldaric acids, aldonic acids, uronic acids, and/or lactone(s) thereof are described. For example, processes for preparing a C.sub.2-C.sub.7 aldaric acid and/or lactone(s) thereof by the catalytic oxidation of a C.sub.2-C.sub.7 aldonic acid and/or lactone(s) thereof and/or a C.sub.2-C.sub.7 aldose are described.

Efficient methods of producing L-threonic acid from L-xylonic acid are disclosed.

Efficient methods of producing L-threonic acid from L-xylonic acid are disclosed.

The present invention provides the use of a metformin salt, particularly metformin monothreonate, in the preparation of a medicament for treating cerebral infarction. The metaformin monothreonate of the present invention has an excellent effect in the treatment of cerebral infarction. The present invention also provides a method for preparing metformin monothreonate and a composition comprising metformin monothreonate.

Proposed is a high-yield simultaneous conversion method for a hydrogen source and a carbon dioxide source. The method significantly increases a yield of a formate through conversion of carbon dioxide. To this end, a carbon dioxide source and a hydrocarbon containing one or more hydroxy groups undergo a simultaneous conversion reaction in the presence of a solvent containing one or more alcohols and having a pH of 10 to 14.

Proposed is a high-yield simultaneous conversion method for a hydrogen source and a carbon dioxide source. The method significantly increases a yield of a formate through conversion of carbon dioxide. To this end, a carbon dioxide source and a hydrocarbon containing one or more hydroxy groups undergo a simultaneous conversion reaction in the presence of a solvent containing one or more alcohols and having a pH of 10 to 14.