Click-based synthesis and proteomic profiling of lipstatin analogues
作者:Mun H. Ngai、Peng-Yu Yang、Kai Liu、Yuan Shen、Markus R. Wenk、Shao Q. Yao、Martin J. Lear
DOI:10.1039/c0cc01276a
日期:——
Using click chemistry to enable both structural diversity and proteome profiling within a natural product derived library, two out of nineteen lipstatin analogues showed similar activity to Orlistat against fatty acid synthase (FAS), but with an improved ability to induce tumour cell death.
Development of an Activity-Based Probe and In Silico Design Reveal Highly Selective Inhibitors for Diacylglycerol Lipase-α in Brain
作者:Marc P. Baggelaar、Freek J. Janssen、Annelot C. M. van Esbroeck、Hans den Dulk、Marco Allarà、Sascha Hoogendoorn、Ross McGuire、Bogdan I. Florea、Nico Meeuwenoord、Hans van den Elst、Gijsbert A. van der Marel、Jaap Brouwer、Vincenzo Di Marzo、Herman S. Overkleeft、Mario van der Stelt
DOI:10.1002/anie.201306295
日期:2013.11.11
A model method: A strategy that combines a knowledge‐based in silicodesign approach and the development of novel activity‐based probes (ABPs) for the detection of endogenous diacylglycerol lipase‐α (DAGL‐α) is presented. This approach resulted in the rapid identification of new DAGL‐α inhibitors with high selectivity in the brain proteome. ABPP=activity‐based protein profiling.
Totalsynthesis of jahanyne (1) was achieved from commercially available materials on a 38 mg scale. The Boc-N-Me-L-Val-OH fragment along with the HATU/DIPEA coupling condition was applied to avoid the diketopiperazine side reaction in solution phase synthesis.
jahanyne(1)的全合成是由市售材料以38 mg的规模实现的。使用Boc - N -Me- L -Val-OH片段以及HATU / DIPEA偶联条件,以避免溶液相合成中的二酮哌嗪副反应。
Diazophosphonates: Effective Surrogates for Diazoalkanes in Pyrazole Synthesis
作者:Katie Ruffell、Frances R. Smith、Michael T. Green、Simon M. Nicolle、Martyn Inman、William Lewis、Christopher J. Hayes、Christopher J. Moody
DOI:10.1002/chem.202101788
日期:2021.10
transfer from C to N to aromatize the initial cycloadduct, and hence its facile removal from the final pyrazole product. Overall, the diazophosphonate acts as a surrogate for the much less stable diazoalkane in cycloadditions, with the phosphoryl group playing a vital, but traceless, role. The cycloaddition proceeds more readily with alkynes bearing electron-withdrawing groups, and is regiospecific with
重氮膦酸盐,很容易通过分批或流动氧化相应的腙,由 α-酮膦酸盐制备,是炔烃的 1,3-偶极环加成反应中的有用伙伴,得到N-H 吡唑,包括此类过程的第一个分子内实例。磷酰基赋予重氮 1,3-偶极子许多理想的特性。磷酰基的吸电子性质使重氮化合物稳定,使其更易于处理,而磷酰基在 [1,5]-σ 重排中容易迁移的能力使其从 C 转移到 N 以芳构化初始环加合物,因此很容易从最终的吡唑产品中去除。总体而言,重氮膦酸盐在环加成中充当稳定性差得多的重氮烷烃的替代物,其中磷酰基起着至关重要但无痕的作用。带有吸电子基团的炔烃更容易进行环加成反应,并且对不对称炔烃具有区域专一性。
Parasite‐Based Screening and Proteome Profiling Reveal Orlistat, an FDA‐Approved Drug, as a Potential Anti<i>Trypanosoma brucei</i>Agent<sup>[</sup><sup>]</sup>
作者:Peng‐Yu Yang、Min Wang、Kai Liu、Mun Hong Ngai、Omar Sheriff、Martin J. Lear、Siu Kwan Sze、Cynthia Y. He、Shao Q. Yao
DOI:10.1002/chem.201200482
日期:2012.7.2
shows potential activities against tumors, mycobacteria, and parasites. Herein, we report the synthesis and evaluation of an expanded set of orlistat‐like compounds, some of which showed highly potent trypanocidal activities in both the bloodstream form (BSF) and the procyclic form (PCF) of T. brucei. Subsequent in situ parasite‐basedproteomeprofiling was carried out to elucidate potential cellular