The α,5-Dicarboxy-2-nitrobenzyl Caging Group, a Tool for Biophysical Applications with Improved Hydrophilicity: Synthesis, Photochemical Properties and Biological Characterization
摘要:
AbstractEarlier we reported on the synthesis of α,4‐dicarboxy‐2‐nitrobenyzl caged compounds (Schaper, K. et al. [2002] Eur. J. Org. Chem., 1037–1046). These compounds have the advantage of an increased hydrophilicity compared with the well‐established α‐carboxy‐2‐nitrobenzyl caged compounds; however, the release of the active compound becomes slower due to the introduction of the additional carboxy group. Based upon theoretical calculations we predicted that the release would become faster when the additional carboxy group is moved to the 5‐position. Here we describe the synthesis and the photochemical and biological characterization of an α,5‐dicarboxy‐2‐nitrobenyzl caged compound. The high hydrophilicity of the new caging group is maintained due to the fact that the additional carboxy moiety is preserved, while the release of the active species from the new derivative is even faster than for the reference, an α‐CNB caged compound.
Vicarious Nucleophilic Substitution of Hydrogen in Nitrobenzoic Acids
作者:M. Makosza、S. Ludwiczak
DOI:10.1055/s-1986-33420
日期:——
The vicarious nucleophilic substitution of hydrogen in three isomeric nitrobenzoic acids 2-4 was studied. The negatively charged carboxylate anion substituent does not disturb the reaction course which proceeds with good to moderate yields to give products 6 and 7.
MAKOSZA, M.;LUDWICZAK, S., SYNTHESIS, BRD, 1986, N 1, 50-52
作者:MAKOSZA, M.、LUDWICZAK, S.
DOI:——
日期:——
The α,5-Dicarboxy-2-nitrobenzyl Caging Group, a Tool for Biophysical Applications with Improved Hydrophilicity: Synthesis, Photochemical Properties and Biological Characterization
AbstractEarlier we reported on the synthesis of α,4‐dicarboxy‐2‐nitrobenyzl caged compounds (Schaper, K. et al. [2002] Eur. J. Org. Chem., 1037–1046). These compounds have the advantage of an increased hydrophilicity compared with the well‐established α‐carboxy‐2‐nitrobenzyl caged compounds; however, the release of the active compound becomes slower due to the introduction of the additional carboxy group. Based upon theoretical calculations we predicted that the release would become faster when the additional carboxy group is moved to the 5‐position. Here we describe the synthesis and the photochemical and biological characterization of an α,5‐dicarboxy‐2‐nitrobenyzl caged compound. The high hydrophilicity of the new caging group is maintained due to the fact that the additional carboxy moiety is preserved, while the release of the active species from the new derivative is even faster than for the reference, an α‐CNB caged compound.