Functionally Diverse Macromolecules and Their Synthesis
申请人:Simanek E. Eric
公开号:US20070041933A1
公开(公告)日:2007-02-22
Functionally diverse macromolecules and synthetic routes for obtaining the same are disclosed. In certain embodiments, the synthesis proceeds in a divergent manner. In other embodiments, the routes rely on the differential reactivity of monomeric electrophilic triazine building blocks that display protected or unprotected groups. This diversity permits the facile introduction of a variety of diversity groups at multiple positions of these macromolecules, thereby setting the stage for further generational growth of the macromolecule and/or incorporation of other diversity groups such as biocompatible targeting groups.
A synthetic route for obtaining functional group diversity in macromolecules is described. The route relies on the differential reactivity of substituted dichlorotriazines. Treatment of a triamine core with substituted dichlorotriazines cleanly yields tris(monochlorotriazines). Subsequent SNAr reactions with amine nucleophiles bearing the functional group of interest yield diversity. If the substituent on the dichlorotriazine is a protected nucleophile, deprotection of the functionalized core allows for iterative reactions and the synthesis of star, dendritic, and hybrid macromolecules.
FUNCTIONALLY DIVERSE MACROMOLECULES AND THEIR SYNTHESIS
申请人:Simanek E. Eric
公开号:US20070098676A1
公开(公告)日:2007-05-03
Functionally diverse macromolecules and synthetic routes for obtaining the same are disclosed. In certain embodiments, the synthesis proceeds in a divergent manner. In other embodiments, the routes rely on the differential reactivity of monomeric electrophilic triazine building blocks that display protected or unprotected groups. This diversity permits the facile introduction of a variety of diversity groups at multiple positions of these macromolecules, thereby setting the stage for further generational growth of the macromolecule and/or incorporation of other diversity groups such as biocompatible targeting groups.
Triazine Dendrimers with Orthogonally Protected Amines on the Periphery. Masking Amines with Dde and BOC Groups Provides an Alternative to Carrying Protected Alcohols and Disulfides through an Iterative Synthesis
作者:Alona P. Umali、Hannah L. Crampton、Eric E. Simanek
DOI:10.1021/jo701320h
日期:2007.12.1
An orthogonally protected dendrimer based on melamine displaying 24 Boc-protected amines (Boc is t-butoxycarbonyl) and 12 Dde-protected (Dde is N-2-(4,4-dimethyl-2,6-dioxocyclohexylidene)ethyl) amines was synthesized using a convergent route in four linear steps in 43% overall yield to provide 5 g of product. Postsynthetic manipulation of this dendrimer produced a 57 kDa macromolecule bearing poly(ethylene