摘要:
The present invention is directed to a new process for the production of chitin oligomers, including fragmentation, partial hydrolysis and recovery. This process produces high yields, especially of higher (tetra- to deca-) chitin oligomers.
摘要:
Alkyl 2-acetamido-2-deoxy-D-glucopyranoside uronic acids, and their pharmaceutically or cosmetically acceptable salts, and their use as surface-active and/or interfacially active active compounds, in particular as detergent surfactants or emulsifiers.
摘要:
Alkyl 2-acetamido-2-deoxy-D-glucopyranoside uronic acids, and their pharmaceutically or cosmetically acceptable salts, and their use as surface-active and/or interfacially active active compounds, in particular as detergent surfactants or emulsifiers.
摘要:
Alkyl 2-acetamido-2-deoxy-D-glucopyranoside uronic acids, and their pharmaceutically or cosmetically acceptable salts, and their use as surface-active and/or interfacially active active compounds, in particular as detergent surfactants or emulsifiers.
摘要:
Cosmetic or pharmaceutical preparations, characterized by an effective content of pharmaceutically and/or cosmetically acceptable glycoglycerolipids.
摘要:
Streptazoline is reacted with naphthoquinones in a Diels-Alder reaction, and the adduct is then oxidized. The resulting compounds have cytotoxic activity, in particular against leukemia cells, and have an antimicrobial action and act against protozoa.
摘要:
A process for the manufacture of glycosides which comprises reacting a protected hexopyranosyl fluoride with an aglycon or a silyl ether thereof in the presence of a metal fluoride of group IV or V of the periodic table, said metal having an atomic number of at least 22 and being present in the fluoride in a higher, stable and non-oxidizing or weekly oxidizing stage.
摘要:
Tocopheryl glycosides of the general formula ##STR1## or of the general formula ##STR2## where n can adopt values of 0-6 and where R represents a radical from the group consisting of H, branched and unbranched alkyl of 1-18 carbon atoms, branched and unbranched acyl of 1-18 carbon atoms, and where R within one molecule can be identical in all positions of tie glycosyl groups, but can also adopt different meanings within one molecule, such that it is possible within one molecule to choose any desired combinations of the radicals represented.