Compounds Based on a Triethyl- or Trimethoxybenzene Scaffold Bearing Pyrazole, Pyridine, and Pyrimidine Groups: Syntheses and Representative Binding Studies towards Carbohydrates

Abstract

Pyrazole-based artificial receptors have often been used in the recognition of ions, but in the area of sugar recognition the potential of pyrazole-based recognition groups has only been rarely examined. In this paper we describe the syntheses of twelve new pyrazole-bearing compounds, which are all potentially applicable for use as carbohydrate receptors. The prepared compounds enforce tripodal architecture and are based on a triethyl- or trimethoxybenzene scaffold. Representative complexation studies with selected carbohydrates showed interesting binding preferences of the new compounds.