Abstract: The present invention pertains to novel thiocycloheptyne derivatives of general formula (I): and in particular to thiacycloalkynesulfoimine derivatives and their synthesis. The invention also relates to the use of the novel thiocycloheptyne derivatives in coupling reactions with linkers and drugs. The invention further relates to the use of the novel thiocycloheptynes in bioorthogonal (copper-free) click reactions. The invention further pertains to the use of the novel thiocycloheptyne derivatives in the generation of advanced multifunctional drug delivery systems (drug-loaded) nanoparticles.

Abstract: The present invention pertains to novel thiocycloheptyne derivatives of general formula (I): and in particular to thiacycloalkynesulfoimine derivatives and their synthesis. The invention also relates to the use of the novel thiocycloheptyne derivatives in coupling reactions with linkers and drugs. The invention further relates to the use of the novel thiocycloheptynes in bioorthogonal (copper-free) click reactions. The invention further pertains to the use of the novel thiocycloheptyne derivatives in the generation of advanced multifunctional drug delivery systems (drug-loaded) nanoparticles.

Abstract: The present invention is directed to particle comprising a drug and a ligand, and to method of making them and use thereof. Particularly, the present invention results in the covalent entrapment of drug(s) in high amounts in polymer carriers, such as (nano)particle, microspheres and other types of polymer devices for controlled release. The polymer carriers or devices can be decorated with ligands, allowing for targeting specific tissues and/or (non-) invasive monitoring.

Abstract: The present invention relates to a method for the preparation of a controlled release system and especially to a method for entrapment of compounds in polymer carriers for controlled release of active ingredients, preferably bioactive ingredients, such as drugs. This method results in a system for controlled release of active ingredients and especially for controlled drug delivery. In accordance with the present invention, the tem controlled release” encompasses all kinds of controlled release, including slow release, sustained and delayed release. Particularly, the present invention results in active ingredients, entrapped in or otherwise incorporated in or coupled to polymer carriers or polymeric devices, such as micelles, nanoparticles, microspheres and other types of polymer devices for controlled release; the active ingredients are covalently bonded to the polymer carriers or polymeric devices.

Abstract: The present invention relates to compositions comprising polymers whose solubility characteristics can be changed by incubation and particularly poly (hydroxyalkyl(meth) acrylamide mono/di-lactate_interpolymers. Another aspect of this invention is the application of such temperature sensitive polymers as release systems of biologically active compounds. The polymers of the present invention comprise monomers, which have modifiable functionality. The functionality of the monomers can for example be modified by the presence of hydrolysable groups. The modification is effected by the incubation, leading to a change of the water solubility characteristics of the polymer. The polymers used in the present invention contain hydrolysable chemical groups. As a result the polymer's solution characteristics, specifically its lower critical solution temperature (LCST), change upon incubation.

Abstract: The present invention relates to a particular class of biodegradable linkers, ensuring transiently stable conjugation of building blocks and/or bioactive compounds into drug delivery systems (DDS), such as DDS based on polymeric micelles or hydrogels. In addition, the present invention relates to compounds, comprising said linkers, such compounds preferably being prodrugs. Further, the invention is directed to the use of said linkers, and especially said biodegradable linkers, in a drug delivery system. Moreover, the invention relates to controlled release system comprising a polymer matrix, capable of releasing an active ingredient, wherein the active ingredient is covalently linked to the polymer molecules of the polymer matrix through said linkers, as well as to a method of synthesising these linkers and preparing such controlled release systems.