Direct Structural Comparison of a Rigid Cyclic Peptidic Scaffold Using Crystallography and NMR in Strained PH Polymer Gels
作者:Christopher J. Arnusch、Johannes H. Ippel、Huub Kooijman、Anthony L. Spek、Rob M. J. Liskamp、Johan Kemmink、Roland J. Pieters
DOI:10.1002/ejoc.201000440
日期:——
ether containing cyclicpeptidicscaffolds was synthesized and cyclized by an SNAr reaction. The structure of one rigidscaffold was solved by X-ray crystallography and also determined in solution by NMR spectroscopy. Molecular alignment of the peptidicscaffold in strainedPHpolymergels in [D6]DMSO was applied to extract residual dipolar couplings (RDCs). The RDC values were used to obtain a structure