5 results about "Carbohydrate derivative" patented technology

The invention discloses a selective boron-heteroatom exchange method and application thereof, and belongs to the technical field of organic chemistry. The method comprises the following steps: by adopting Lewis base as an activating agent, promoting a compound in a formula A to generate primary alkyl free radicals under a heating condition, and then performing free radical coupling reaction with a compound in a formula B, thereby synthesizing the heteroatom substituted boron-containing compound in a formula C. According to the invention, bisphenol compounds such as catechol and the like are used as activators, so that the method has a good activation effect and wide substrate applicability, a series of heteroatom-containing borate compounds with various structures can be obtained with excellent yield, and the method has the remarkable advantages of easily available raw materials, simplicity in operation, low cost, environmental friendliness and the like. More importantly, the method can be successfully applied to construction of boron-containing carbohydrate derivatives, and provides a new synthetic approach for functional modification of carbohydrate compounds.

The invention relates to a method for synthesising macromolecules made up of units U that are mostly monosaccharides or monosaccharide derivatives, by successive elongation of a first unit U1 attached by a covalent bond to an anchor molecule soluble in organic solvents. The elongation takes place by coupling with a monomer or oligomer M having at least two functions. The method is characterised in that the anchor molecule comprises a polyolefin chain or a polyolefin oligomer or a polyalkene, with at least 5 monomer units, and preferably between 10 and 50 monomer units, the polyolefin chain preferably being a polyisobutene chain.

To provide a mollusc-like food substantially free from animal raw material and having texture similar to that of molluscs. The present invention pertains to a mollusc-like food that contains polysaccharides and trehalose or a carbohydrate derivative thereof and that is substantially free from animal raw material.

There is provided a compound comprising a structure represented by general formula (1) or ionized form thereof wherein A comprises a carbohydrate or a carbohydrate derivative; R1, R2, R3, R8, R9, and R10 are each independently H, optionally substituted alkyl, optionally substituted alkenyl, or optionally substituted alkynyl; R4 and R7 are each independently optionally substituted alkyl, optionally substituted alkenyl, or optionally substituted alkynyl; R5 and R6 each independently comprises a hydrophobic moiety; Z1 and Z2 are each independently selected from the group consisting of –O–C(=O)–, –C(=O)–O–, –C(=O)–, –O–, –RaN–C(=O)–, –C(=O)–NRb–, where Ra and Rb are each independently H, optionally substituted alkyl, optionally substituted alkenyl, or optionally substituted alkynyl; x is an integer ≥ 1; and y is an integer ≥ 0.

The present invention relates to new carbohydrate derivatives. The derivatives can be prepared via a method that involves direct amination. The derivatives can be used for various applications, for instance as surfactants.