5-substituted hydantoins starting from various resins for solid-phase combinatorial chemistry has been developed. The hydantoins were synthesized from pre-loaded resins with amino acids via treatment with isocyanate or phenylisocyanate and subsequent intramolecular cyclization. Both reactions were performed under microwave irradiation. We studied the cyclative cleavage leading to hydantoin compounds dependent
Use of the Hydantoin Directing Group in Ruthenium(II)-Catalyzed C–H Functionalization
作者:Jamie A. Leitch、Hans P. Cook、Yunas Bhonoah、Christopher G. Frost
DOI:10.1021/acs.joc.6b02073
日期:2016.10.21
Ruthenium(II)-catalyzed C–H functionalization of N-arylhydantoins is herein described. The biologically relevant hydantoin (imidazolidinedione) heterocycle functions as a weakly coordinating directing group in a C–H alkenylation reaction. The reaction gave a wide scope of 23 examples with yields up to 94% in the green solvent 2-MeTHF. Functionalization of API nilutamide (antiandrogen) is also reported
The embodiments provide compounds of the general Formulas I-IV, as well as compositions, including pharmaceutical compositions, comprising a subject compound. The embodiments further provide treatment methods, including methods of treating a hepatitis C virus infection and methods of treating liver fibrosis, the methods generally involving administering to an individual in need thereof an effective amount of a subject compound or composition.
A New General Pathway for Synthesis of Reference Compounds of N-Terminal Valine−Isocyanate Adducts
作者:Ronnie Davies、Per Rydberg、Emelie Westberg、Hitesh V. Motwani、Erik Johnstone、Margareta Törnqvist
DOI:10.1021/tx900278p
日期:2010.3.15
such reference compounds of adducts to N-terminal valine from isocyanates accessible for biomonitoring purposes. The synthesized hydantoins corresponding to adducts from isocyanic acid, methyl isocyanate, phenyl isocyanate, and 2,6-toluene diisocyanate were characterized by LC-MS analysis. The background level of the hydantoinfrom isocyanic acid in human blood was analyzed with the LC-MS conditions developed