This invention is directed to proteinase (protease) inhibitors, and more particularly to thiol sulfonamide inhibitors for matrix metalloproteinase 13(MMP-13), compositions of proteinase inhibitors, intermediates for the syntheses of proteinase inhibitors, processes for the preparation of proteinase inhibitors and processes for treating pathological conditions associated with pathological matrix metalloproteinase activity related to MMP-13.
Chemoselective Intramolecular Formal Insertion Reaction of Rh–Nitrenes into an Amide Bond Over C−H Insertion
作者:Masato Kono、Shingo Harada、Tetsuhiro Nemoto
DOI:10.1002/chem.201805878
日期:——
bond). Nitrene insertion into an amide C−N bond, however, has not been reported so far. In this work we have developed a rhodium‐catalyzed one‐nitrogen insertion into amide C−N and sulfonamide S−N bonds. Experimental and theoretical analyses based on density functional theory indicate that the formal amide insertion proceeds via a rhodium‐coordinated ammonium ylide formed between the nitrene and the