Stereoselective Synthesis of Fluorinated 1,3-cis-Diaminocyclopentanes
摘要:
Several fluorinated 1,3-diaminocyclopentanes, previously reported to be useful RNA structural probes, can be prepared in a diastereoselective manner from a single bicyclic hydrazine precursor, in 3 to 9 steps.
Modular Access to N-Substituted cis-3,5-Diaminopiperidines
摘要:
A sequence of oxidative cleavage/reductive amination/hydrogenolysis enables the preparation of N-substituted cis-3,5-diaminopiperidines from a readily available bicyclic hydrazine. This new synthetic route provides a simple and general access to RNA-friendly fragments with a good chemical diversity.