Macrocyclic compounds

大环化合物是指含有 12 元或更大环的分子，在小分子药物开发中越来越受到重视。主要原因包括：大环类化合物提供了新的化学空间，挑战新的蛋白质靶标，另外，一些大环类药物也显示出较好的药代动力学性能。大环类化合物对于比较具有挑战性的靶点的药物开发具有一定优势，特别是在调节大分子之间相互作用如蛋白蛋白相互作用方面。此外，大环化合物的大小和复杂性使其能够保证更大的空间分布的结合相互作用，从而增加结合亲和力和选择性。

MCE 提供 422 个大环类化合物，可以用于高通量筛选和高内涵筛选。MCE 大环类化合物库是新药开发的有利工具，尤其对于“难成药”靶点及蛋白互作的新药研发。

Protein protein interactions (PPI) have pivotal roles in life processes. The studies showed that aberrant PPI are associated with various diseases. However, the design of modulators targeting PPI still faces tremendous challenges, such the difficult PPI interfaces for the drug design, lack of ligands reference, lack of guidance rules for the PPI modulators development and high-resolution PPI proteins structures.

The PPI Library comprises molecules of various sizes, frameworks, and shapes ranging from fragment-like entities to macrocyclic derivatives designed as secondary structure mimetics or as epitope mimetics. The designs cover β-turn / loop mimetics and α-helix mimetics. Since helices present at the interface in 62% of all protein-protein interactions. This library focused on designs including mimics with the substitution geometry of an a-helices, as well as designs that mimic the location of “hot-spot” side chains in helix-mediated PPIs.

Macrocycles are promising scaffolds for the design of novel RNA targeting molecules. This collection of macrocycles for RNA consists of very diverse, drug-like molecules which incorporate certain known RNA-recognition elements (e.g. nucleobase ring systems and analogs) distributed within macrocyclic rings or peripheral fragments. As macrocyclic molecules tend to be larger than traditional screening molecules, it is vital to carefully assess and control their physicochemical properties. All macrocycles have been tested for aqueous and DMSO solubility with cutoffs applied at 10 mM in DMSO and 50 µM in PBS (pH 7.4); PAMPA permeability has also been tested for representative set of macrocycles.