protection of threaded functions by the macrocycle, in this case promoting an unusual and disfavored 4-exo-trig ringclosure. Kinetic and synthetic studies allowed us to delineate an advantageous approach toward β-lactams based on a two-step, one-pot protocol: an intramolecular ringclosure followed by a thermally induced dethreading step. The advantages of carrying out this cyclization in the confined
[EN] PROPENOYL HYDRAZIDES<br/>[FR] HYDRAZIDES DE PROPENOYLE
申请人:GEORGIA TECH RES INST
公开号:WO2005080353A1
公开(公告)日:2005-09-01
The present disclosure provides compositions for inhibiting proteases, methods for synthesizing the compositions, and methods of using the disclosed protease inhibitors. Aspects of the disclosure include a peptidyl propenoyl hydrazide compositions that inhibit proteases, for example cysteine proteases, either in vivo or in vitro.
The synthesis of a series of interlocked profragrances and the study of the controlled release of the corresponding scents are reported. The structures of the profragrances are based on a [2]pseudorotaxane scaffold with a fumaramate thread derivedfrom perfumery alcohols and a tetrabenzylamido ring. The delivery of the scents was accomplished by sequential thermal dethreading and further enzymatic
The present disclosure provides compositions for inhibiting proteases, methods for synthesizing the compositions, and methods of using the disclosed protease inhibitors. Aspects of the disclosure include a peptidyl propenoyl hydrazide compositions that inhibit proteases, for example cysteine proteases, either in vivo or in vitro.
The base-promoted cyclization of N-(arylmethyl)fumaramide threads present in orientational mechanostereoisomers, which contain a single stereogenic center in the ring, allows the generation of enantioenriched lactams of different ring sizes as well as amino acids. The chiral information is effectively transmitted across the mechanical bond from the encircling ring to the new interlocked functionality