Hyper-reticulated calixarene polymers: a new example of entirely synthetic nanosponge materials

• Alberto Spinella,
• Marco Russo,
• Antonella Di Vincenzo,
• Delia Chillura Martino and
• Paolo Lo Meo

Beilstein J. Org. Chem. 2018, 14, 1498–1507, doi:10.3762/bjoc.14.127

• which several techniques have been exploited, spanning from oxidation to photodegradation. Tests were performed only with materials CaNS2 and CaNS4, which appeared on average the best absorbents towards p-nitroanilines. The results of the sequestration tests on dyes 6–10 are summarized in Table 2

Binding abilities of polyaminocyclodextrins: polarimetric investigations and biological assays

• Marco Russo,
• Daniele La Corte,
• Annalisa Pisciotta,
• Serena Riela,
• Rosa Alduina and
• Paolo Lo Meo

Beilstein J. Org. Chem. 2017, 13, 2751–2763, doi:10.3762/bjoc.13.271

• protonation step at each polyamine branch occurs. This suggests the presence of strong intrachain interactions before protonation. Binding abilities of AmCDs towards p-nitroaniline derivatives 1–4 p-Nitroanilines constitute a good class of probe molecules for testing the microscopic behaviour of cyclodextrins

• values for p-nitroanilines are affected by an induced circular dichroism effect due to the interaction between the dipole moments of the polarized chromophore guest moiety and of the cyclodextrin cavity. Therefore, these parameters provide an estimation of the time-averaged tilt angle between the

• binding between AmCD and Alg does not involve the host cavity, but implies a different mechanism, i.e., external electrostatic and hydrogen bond interactions. Therefore, it is not comparable with the interaction with p-nitroanilines. Moreover, it must be considered that the three AmCDs differ for both the

Binding abilities of a chiral calix[4]resorcinarene: a polarimetric investigation on a complex case of study

• Marco Russo and
• Paolo Lo Meo

Beilstein J. Org. Chem. 2017, 13, 2698–2709, doi:10.3762/bjoc.13.268

• : calix[4]resorcinarene; host–guest complexes; p-nitroanilines; polarimetry; supramolecular chemistry; Introduction During the last decades calix[n]arenes and calix[n]resorcinarenes (CAs) have emerged as versatile supramolecular host systems for various applications [1][2][3][4][5], spanning from sensors

A novel high-yield synthesis of aminoacyl p-nitroanilines and aminoacyl 7-amino-4-methylcoumarins: Important synthons for the synthesis of chromogenic/fluorogenic protease substrates

• Xinghua Wu,
• Yu Chen,
• Herve Aloysius and
• Longqin Hu

Beilstein J. Org. Chem. 2011, 7, 1030–1035, doi:10.3762/bjoc.7.117