A combinatorial approach towards the synthesis of non-hydrolysable triazole–iduronic acid hybrid inhibitors of human α-<scp>l</scp>-iduronidase: discovery of enzyme stabilizers for the potential treatment of MPSI
Preparation of substituent-diverse, triazole–iduronic acid hybrid molecules by click reaction of an azido iduronic acid derivative with randomly chosen alkynes is described. Library members were screened for their ability to inhibit α-L-iduronidase, and hit molecules and analogues were then investigated for their ability to stabilize rh-α-IDUA in a thermal denaturation study. This work resulted in
Chemo-enzymatic site-specific modification of peptides and proteins to form cleavable conjugates
申请人:Northeastern University
公开号:US11129790B2
公开(公告)日:2021-09-28
A method is provided for reversibly modifying a protein or peptide on its glutamine residue(s) by performing a reaction, such as a transglutaminase-catalyzed reaction, between the protein or peptide and an amine-containing reagent, whereby the reagent is linked through its amine function to a side chain of the glutamine residue. Subjecting the modified protein to an appropriate stimulus regenerates the protein or peptide in its original form.
The versatile conversion of propargylic amides to the respective 2-substituted 5-methyloxazoles was efficiently catalyzed by Zn(OTf)2 (5 mol%) under microwave irradiation in toluene. The method was applicable to a wide range of aliphatic, aromatic and heteroaromatic propargylic amides and thus represents a useful method which is complementary to the existing metal-catalyzed protocols, considering the
Erratum to “Zn(OTf)2-catalyzed, microwave-promoted synthesis of 2-substituted 5-methyloxazoles from propargylic amides” [Tetrahedron Lett. 60 (2019) 777–779]