Solid-phase synthesis of hydroxy-acids leading to macrolactones

Short and diverse route toward complex natural product-like macrocycles

[reaction: see text] A general strategy toward macrocyclic compounds using multicomponent reaction (MCR) chemistry, e.g., Passerini and Ugi variants, and ring-closing metathesis (RCM) is introduced. The corresponding bifunctional isocyanides carboxylic acids bearing a terminal olefin are easy to prepare from the corresponding commercially available starting materials. Advantageously, this strategy allows fast access to a diverse conformational space of natural product-like macrocycles and could thus be of interest in the discovery of novel bioactive agents.

Use of the transannular Diels–Alder (TADA) reaction to probe biological receptors: Rational design and synthesis of tricyclic TADA adducts capable of rigidly holding pharmacophore parts

Transannular Diels–Alder (TADA) adducts constitute a collection of rigid structures, whose conformational diversity is rich. It is possible to design such specifically functionalized molecules capable of binding to known biological targets by molecular modelling MCSS–HOOK (multiple copy simultaneous search). Here we show that such carefully designed compounds can be easily built from small synthons. TADA adducts are very interesting due to their huge conformational diversity, their rigidity (biological interest), and their ease of synthesis (chemical interest).Key words: tricycles, synthesis, transannular Diels–Alder, macrocyclization, conformation, diversity.