title: Chemical adaptor systems.
abstract: "Chemical adaptor systems" are molecules used to link different functionalities, based on unique reactivity that allows controlled fragmentation. Two different mechanistic reactivities were used to prepare chemical adaptor systems. The first is based on a spontaneous intra-cyclization reaction to form a stable ring molecule. Cleavage of the trigger generates a free nucleophile, for example, an amine group, which undergoes intra-cyclization to release the target molecule from the handle part (e.g., a targeting antibody or a solid support for synthesis). The second applied reactivity is an elimination reaction, which is usually based on a quinone-methide-type rearrangement. Similarly, cleavage of the trigger generates a free phenol functionality, which can undergo a self-elimination reaction through a quinone-methide rearrangement to release the target molecule. The adaptor molecules have been applied in the field of drug delivery to release a drug from a targeting device and in the field of solid-phase synthesis to release a synthetic molecule from the solid support. A chemical adaptor molecule has also been used as a building unit to construct dendrimers with a triggered fragmentation.
authors.affiliation: Department of Organic Chemistry, School of Chemistry, Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel. chdoron@post.tau.ac.il
authors.forename: Doron
authors.initials: D
authors.lastname: Shabat
authors.forename: Roey J
authors.initials: RJ
authors.lastname: Amir
authors.forename: Anna
authors.initials: A
authors.lastname: Gopin
authors.forename: Neta
authors.initials: N
authors.lastname: Pessah
authors.forename: Marina
authors.initials: M
authors.lastname: Shamis
mesh_terms: D000970:Antineoplastic Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D003432:Cross-Linking Reagents / Q000737:chemistry; D003500:Cyclization; D016503:Drug Delivery Systems / Q000379:methods*; D015195:Drug Design; D045563:Indolequinones / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D046911:Macromolecular Substances / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D015394:Molecular Structure; D009369:Neoplasms / Q000188:drug therapy / Q000201:enzymology
chemical_list: D000970:Antineoplastic Agents; D003432:Cross-Linking Reagents; D045563:Indolequinones; D046911:Macromolecular Substances; C068040:quinone methide