在这项研究中,我们从容易获得的起始材料(包括4-异氰酸根合苯甲酰)中合成了双功能建筑中间体4-(3,3-二乙基-2,4-二氧杂氮杂丁-1-基)苯甲酰氯(DEDA-BC)氯化物和对甲苯基异氰酸酯。在其硬链段的迭代合成中,我们首先用单胺(苯胺)或二胺(4,4'-亚甲基二苯胺,4,4'-MDA)处理DEDA-BC的高反应性酰氯,以形成第一代氮杂环丁烷-2,4-二酮中间体。然后,我们在DEDA-BC的更具选择性的氮杂环丁烷2,4-二酮基团上将这些衍生物与4-氨基苄基胺反应,以形成第一代苄基胺增量剂。使用这种交替方法,我们获得了各种链长(n= 1-3),并且在无催化剂的条件下,无需繁琐的纯化步骤即可系统地进行。通过这种新的迭代合成方法,可以精确地合成重复单元数为1至3的单胺和二胺增量剂。单胺系列的每一代之间的摩尔质量增加分别为365 g mol –1和730 g mol –1二胺系列。超分子增量剂的
4-Oxo-β-lactams (Azetidine-2,4-diones) Are Potent and Selective Inhibitors of Human Leukocyte Elastase
作者:Jalmira Mulchande、Rudi Oliveira、Marta Carrasco、Luís Gouveia、Rita C. Guedes、Jim Iley、Rui Moreira
DOI:10.1021/jm901082k
日期:2010.1.14
sensitive to the nature of C-3substituents, with small alkyl substituents such as a gem-diethyl group improving the inhibitory potency when compared to gem-methyl benzyl or ethyl benzyl counterparts. 4-Oxo-β-lactams containing a heteroarylthiomethyl group on the para position of an N1-aryl moiety afforded highly potent and selective inhibition of HLE, even at a very low inhibitor to enzyme ratio, as shown
Human neutrophil elastase (HNE) is a serine protease that degrades matrix proteins. An excess of HNE may trigger several pathological conditions, such as psoriasis. In this work, we aimed to synthesize, characterize and formulate new HNE inhibitors with a 4-oxo-β-lactam scaffold with less toxicity, as well as therapeutic index in a psoriasis context. HNE inhibitors with 4-oxo-β-lactam scaffolds were
Azetidine-2,4-diones (4-Oxo-β-lactams) as Scaffolds for Designing Elastase Inhibitors
作者:Jalmira Mulchande、Rita C. Guedes、Wing-Yin Tsang、Michael I. Page、Rui Moreira、Jim Iley
DOI:10.1021/jm701257h
日期:2008.3.1
N-(4-aryl) position in 3,3-diethyl- N-aryl derivatives increasing the rate of enzyme acylation and generating a Hammett rho-value of 0.65. Compared with a rho-value of 0.96 for the rates of alkaline hydrolysis of the same series, this is indicative of an earlier transitionstate for the enzyme-catalyzed reaction. Docking studies indicate favorable noncovalent interactions of the inhibitor with the enzyme
Preparation of Supramolecular Extenders with Precise Chain Lengths via Iterative Synthesis and Their Applications in Polyurethane Elastomers
作者:Ming-Chieh Kuo、Shi-Min Shau、Je-Min Su、Ru-Jong Jeng、Tzong-Yuan Juang、Shenghong A. Dai
DOI:10.1021/ma300815q
日期:2012.7.10
diamine extenders with numbers of repeating units ranging from one to three were synthesized precisely through this new iterative synthetic approach. The molar mass increases between each generation were 365 g mol–1 for the monoamine series and 730 g mol–1 for the diamine series. The three generations of supramolecular extenders possessed the distinctive characteristics of multiple hydrogen bonding moieties
在这项研究中,我们从容易获得的起始材料(包括4-异氰酸根合苯甲酰)中合成了双功能建筑中间体4-(3,3-二乙基-2,4-二氧杂氮杂丁-1-基)苯甲酰氯(DEDA-BC)氯化物和对甲苯基异氰酸酯。在其硬链段的迭代合成中,我们首先用单胺(苯胺)或二胺(4,4'-亚甲基二苯胺,4,4'-MDA)处理DEDA-BC的高反应性酰氯,以形成第一代氮杂环丁烷-2,4-二酮中间体。然后,我们在DEDA-BC的更具选择性的氮杂环丁烷2,4-二酮基团上将这些衍生物与4-氨基苄基胺反应,以形成第一代苄基胺增量剂。使用这种交替方法,我们获得了各种链长(n= 1-3),并且在无催化剂的条件下,无需繁琐的纯化步骤即可系统地进行。通过这种新的迭代合成方法,可以精确地合成重复单元数为1至3的单胺和二胺增量剂。单胺系列的每一代之间的摩尔质量增加分别为365 g mol –1和730 g mol –1二胺系列。超分子增量剂的
Chemoproteomics‐Enabled Identification of 4‐Oxo‐β‐Lactams as Inhibitors of Dipeptidyl Peptidases 8 and 9
作者:Luís A. R. Carvalho、Breyan Ross、Lorenz Fehr、Oguz Bolgi、Svenja Wöhrle、Kenneth M. Lum、David Podlesainski、Andreia C. Vieira、Reiner Kiefersauer、Rita Félix、Tiago Rodrigues、Susana D. Lucas、Olaf Groß、Ruth Geiss‐Friedlander、Benjamin F. Cravatt、Robert Huber、Markus Kaiser、Rui Moreira
DOI:10.1002/anie.202210498
日期:2022.11.21
Achieving DipeptidylPeptidase 8 and 9 (DPP8/9) selectivity is a current challenge in chemical biology. Supported by activity-based protein profiling and X-ray crystallography, we disclose 4-oxo-β-lactams as potent, non-substrate-like nanomolar DPP8/9 inhibitors with different binding modes for DPP8/9, including an unprecedented targeting of an extended S2′ subsite in DPP8 and the best selectivity