New downstream products of five-membered pyrrole rings Five-membered pyrrole rings are important heterocyclic skeletons. Recently, we have developed several extensible five-membered nitrogen heterocyclic structures with hydroxyl and amino groups on them.

Recently, the company has developed several intermediates for olefin metathesis, which are mainly used in drug synthesis and materials. It includes pyrrolidine and cyclopentene substituted by various substituents. These compounds are synthesized efficient