申请人:EASTMAN KODAK COMPANY
(a New Jersey corporation)
公开号:EP0288256A2
公开(公告)日:1988-10-26
There are described stable fluorescent labels comprising a complex of Eu⁺³ and a chelating agent comprising a nucleus which is a triplet sensitizer having a triplet energy greater than that of Eu⁺³ and at least two heteroatom-containing groups which form coordinate complexes with Eu⁺³ and a third heteroatom-containing group or heteroatom in or appended to the triplet sensitizer which chelating agents are polypyridine or phenanthroline compounds. Labeled physio- logically active materials useful in specific binding assays such as labeled antigens, haptens, antibodies, hormones and the like comprising the stable fluores-cent labels having physiologically active materials adsorbed or bonded thereto are also described.
Objects of the present invention are to provide a compound which is useful as a surface modifier for producing a drug carrier or the like, or a salt thereof; a fine particle comprising the same; and the like. The present invention provides a compound in which a substance to be modified, which is selected from the group consisting of an amphiphilic substance and a hydrophobic substance, is modified with a glycerol derivative represented by the following formula (1):
wherein R represents a residue comprising a reactive group for the substance to be modified, which is selected from the group consisting of an amphiphilic substance and a hydrophobic substance or for a spacer capable of binding the substance to be modified, which is selected from the group consisting of an amphiphilic substance and a hydrophobic substance, to R—X, or a group capable of being transformed into the reactive group; n represents an integer of 3 or more; and X represents a residue capable of having the following structure by n in number:
directly or via the spacer, or a salt thereof; a fine particle comprising the same; and the like.