Useful substituted cyclodextrin derivatives as intermediates for producing the substance that is biologically active

摘要

In contrast to the mixture which is not defined clearly available in the prior art procedures, the present invention, substituted cyclodextrins are particularly useful intermediates to generate carboxyalkyl cyclodextrins that are well-defined relates to derivatives. The present invention also relates to a preparation process thereof in the process a limited number. It can be oversulfated according to procedures standard in the art carboxyalkyl cyclodextrins defined these well, particularly degenerative joint disease part of its alkali salts Porisurufeto of these ( For example, it for the prevention, or show certain properties of the biologically active for connective tissue repair or cartilage repair and / or treatment of heparin-induced thrombocytopenia or osteoarthritis) is known. None [Selection Figure]