Identifying new lead structures to enhance tolerance towards drought stress via high-throughput screening giving crops a quantum of solace
摘要:
Novel synthetic lead structures interacting with RCAR/(PYR/PYL) receptor proteins were identified based on the results of a high-throughput screening campaign of a large compound library followed by focused SAR studies of the three most promising hit clusters. Whilst indolinylmethyl sulfonamides 8y,z and phenylsulfonyl ethylenediamines 9y,z showed strong affinities for RCAR/ (PYR/PYL) receptor proteins in wheat, thiotriazolyl acetamides 7f,s exhibited promising efficacy against drought stress in vivo (wheat, corn and canola) combined with confirmed target interaction in wheat and arabidopsis thaliana. Remarkably, binding affinities of several representatives of 8 and 9 were on the same level or even better than the essential plant hormone abscisic acid (ABA).
Free Amino Group Transfer via α‐Amination of Native Carbonyls
作者:Minghao Feng、Anthony J. Fernandes、Ana Sirvent、Eleonora Spinozzi、Saad Shaaban、Nuno Maulide
DOI:10.1002/anie.202304990
日期:2023.7.10
An amino group transfer strategy was developed to install free NH2 to the α-position of native carbonyls under mild conditions. The resulting primary α-aminated products are amenable to in situ peptide coupling or Pictet–Spengler cyclization in one-pot procedures. We anticipate this method to provide a general platform towards the synthesis of amines, ultimately opening exciting avenues in the synthesis
Novel synthetic lead structures interacting with RCAR/(PYR/PYL) receptor proteins were identified based on the results of a high-throughput screening campaign of a large compound library followed by focused SAR studies of the three most promising hit clusters. Whilst indolinylmethyl sulfonamides 8y,z and phenylsulfonyl ethylenediamines 9y,z showed strong affinities for RCAR/ (PYR/PYL) receptor proteins in wheat, thiotriazolyl acetamides 7f,s exhibited promising efficacy against drought stress in vivo (wheat, corn and canola) combined with confirmed target interaction in wheat and arabidopsis thaliana. Remarkably, binding affinities of several representatives of 8 and 9 were on the same level or even better than the essential plant hormone abscisic acid (ABA).
Three-component reaction discovery enabled by mass spectrometry of self-assembled monolayers
作者:Timothy J. Montavon、Jing Li、Jaime R. Cabrera-Pardo、Milan Mrksich、Sergey A. Kozmin
DOI:10.1038/nchem.1212
日期:2012.1
Multicomponent reactions are employed extensively in many areas of organic chemistry. Despite significant progress, the discovery of such enabling transformations remains challenging. Here, we present the development of a parallel, label-free reaction-discovery platform that can be used in the identification of new multicomponent transformations. Our approach is based on parallel mass spectrometric screening of interfacial chemical reactions on arrays of self-assembled monolayers. This strategy enabled the identification of a simple organic phosphine that can catalyse a previously unknown condensation of siloxyalkynes, aldehydes and amines to produce 3-hydroxyamides with high efficiency and diastereoselectivity. The reaction was further optimized using solution-phase methods. A general reaction-discovery platform has been used for identification of a new multicomponent transformation. The approach entails rapid analysis of interfacial chemical reactions on arrays of self-assembled monolayers using mass spectrometry. This enabled identification of a simple organic phosphine that catalyses a previously unknown condensation of siloxy alkynes, aldehydes and amines.