Superactivation of the Botulinum Neurotoxin Serotype A Light Chain Metalloprotease: A New Wrinkle in Botulinum Neurotoxin
摘要:
Small molecules based upon a 2-acylguanidine-5-phenyl thiophene scaffold that can activate the light chain metalloprotease of botulinum neurotoxin serotype A (BoNT LC/A) by an apparent reduction in Km are reported. On the basis of structure-activity relationships and the activation profile, one or more molecules of activator specifically bind to a defined site on the toxin, causing the observed rate enhancement. With the ever-growing clinical uses of BoNT, compounds such as those reported here may provide a method for combating the emerging adaptive immune responses to BoNT.
Despite the resurging interest in covalent inhibitors, libraries are typically designed with synthon filtered out for reactive functionalities that can engage a target through covalent interactions. Herein, we report the synthesis of two libraries containing Michael acceptors to identify cysteine reactive ligands. We developed a simple procedure to discriminate between covalent and high affinity non-covalent
Construction of a Polyheterocyclic Benzopyran Library with Diverse Core Skeletons through Diversity-Oriented Synthesis Pathway
作者:Sangmi Oh、Hwan Jong Jang、Sung Kon Ko、Yeonjin Ko、Seung Bum Park
DOI:10.1021/cc100044w
日期:2010.7.12
In this study, a divergent and practical solid-phaseparallel diversity-oriented synthesis (DOS) strategy was successfully applied for the construction of five discrete coreskeletons embedded with privileged benzopyranyl substructure. The diversity of these coreskeletons was expanded through the introduction of various substituents at the R, R(1), and R(2) positions from a single key intermediate
The present invention provides compounds of Formula (I): or a stereoisomer, or a pharmaceutically acceptable salt thereof, wherein all of the variables are as defined herein. These compounds are GPR120 G protein coupled receptor modulators which may be used as medicaments
cis-(1S,2R) isomer 6 exhibited the most potent BACE1 inhibitory activity among them. X-ray structure analysis of the complex of 6 and BACE1 revealed that its unique binding mode is due to the apparent CH−π interaction between the rigid cyclopropane ring and the Tyr71 sidechain. A derivatization study using 6 as a lead molecule led to the development of highly potent inhibitors in which the structure–activity