Amplifier molecules for enhancement of diagnosis and therapy
申请人:The State of Oregon Acting by and through the State Board of Higher
公开号:US05135737A1
公开(公告)日:1992-08-04
Disclosed are amplifier molecules: various organic compounds having branched structures terminating with amine groups to which pharmacologically active groups can be chemically attached. A number of MRI contrast-enhancing agents were synthesized, each comprising plural active groups, such as stable nitroxides and complexes of trivalent metal cations. Such syntheses were successfully performed using a number of amplifiers having different branched structures, demonstrating the general utility of the pertinent chemistry in the synthesis of amplifiers having any of a wide variety of pharmacologically active groups. Amplifiers were also synthesized having linkers terminating with chemically reactive groups such as isothiocyanates, which render the amplifier bifunctional: attachable to polymers, biomacromolecules, or other biocompatible entity possessing multiple reactive sites such as terminal amines. Via such chemistry, the amplifiers are attachable to monoclonal antibodies for concentration of pharmacologically active groups at a desired site in the body.
The combination of the intramolecular Schmidt reaction with the Diels-Alder reaction provides expedient access to a variety of heterocycles. Two different modes of reaction planning are presented. In one, the azide and ketone moieties necessary for the intramolecular Schmidt reaction originate on different molecules that are reacted and subsequently undergo a ring-adjustment step. Alternatively, an azido ketone can be used provided the ketone is deactivated by its presence in an enone.
JUNG, MICHAEL E.;MILLER, STEVEN J., HETEROCYCLES, 30,(1990) N, C. 839-853
作者:JUNG, MICHAEL E.、MILLER, STEVEN J.
DOI:——
日期:——
GRIECO P.; GALATSIS P.; SPOHN R., TETRAHEDRON, 1986, 42, N 11, 2847-2853