Macrocyclic Scaffold for the Collagen Triple Helix
摘要:
Three strands of natural collagen are linked by covalent bonds prior to their folding into a triple helix. We report on a synthetic collagen in which the strands are pendent on a rigid macrocyclic scaffold of C(3) symmetry. The scaffold confers substantial conformational stability upon the collagen triple helix and makes its folding independent of concentration, both desirable attributes for exploring and exploiting synthetic collagens.
Macrocyclic Scaffold for the Collagen Triple Helix
作者:Jia-Cherng Horng、Andrew J. Hawk、Qian Zhao、Eric S. Benedict、Steven D. Burke、Ronald T. Raines
DOI:10.1021/ol061771w
日期:2006.10.1
Three strands of natural collagen are linked by covalent bonds prior to their folding into a triple helix. We report on a synthetic collagen in which the strands are pendent on a rigid macrocyclic scaffold of C(3) symmetry. The scaffold confers substantial conformational stability upon the collagen triple helix and makes its folding independent of concentration, both desirable attributes for exploring and exploiting synthetic collagens.
Synthesis and Study of <i>C</i><sub>3</sub>-Symmetric Hydropyran Cyclooligolides with Oriented Aryl and Alcohol Appendages at 10 Å Spacing
作者:Steven D. Burke、Qian Zhao
DOI:10.1021/jo991681n
日期:2000.3.1
macrocycles with pendant aryl and hydroxymethyl groups are described. These functionalgroups, amenable to further elaboration, were installed early in each synthesis and carried through an iterative sequence of module coupling and macrolactonization. Association constants for macrolides 1a-c with alkalimetalcation guests were determined, and sandwich-type complexes with Ba(2+) were confirmed for these macrocycles