由于高感染率和频繁出现的耐药性,真菌感染已成为严重的医学问题。角鲨烯环氧酶(SE)和14α-脱甲基酶(CYP51)被认为是重要的抗真菌靶标,它们可以在抗真菌治疗中发挥协同作用。本研究通过De Novo Link方法筛选了一系列活性片段,并筛选出具有较高Ludi_Scores的活性片段,这些片段均显示出与双靶标(SE,CYP51)的明显结合能力。随后,通过连接这些核心片段,构建了带有萘基酰胺骨架的三个系列目标化合物,并合成了它们的结构。大多数化合物在病原真菌的治疗中均显示出抗真菌活性。值得注意的是具有优良的广谱抗真菌特性的10b-5和17a-2也表现出明显的抗药性真菌抗真菌作用。初步机理研究证明,这些靶标化合物可通过抑制双重靶标(SE,CYP51)的活性来阻断麦角甾醇的生物合成。此外,具有低毒性副作用的目标化合物10-5和17a-2在体内也显示出优异的药理作用。进行了分子对接和ADMET预测,可以指导后续先导化合物的优化。
A Fragment-Based Method to Discover Irreversible Covalent Inhibitors of Cysteine Proteases
作者:Stefan G. Kathman、Ziyang Xu、Alexander V. Statsyuk
DOI:10.1021/jm500345q
日期:2014.6.12
reported which irreversibly tethers drug-like fragments to catalytic cysteines. We attached an electrophile to 100 fragments without significant alterations in the reactivity of the electrophile. A mass spectrometry assay discovered three nonpeptidic inhibitors of the cysteineprotease papain. The identified compounds display the characteristics of irreversibleinhibitors. The irreversible tethering system
New Chromophore Systems from Coumarin-Oxazol-5-one Combination
作者:Derya Topkaya、Serap Alp
DOI:10.1007/s10895-017-2078-2
日期:2017.7
Coumarin-oxazol-5-one (COX), 3a-d, were synthesized with 7-methoxy-2-oxo-2H-chromene-4-carbaldehyde and benzoylglycine derivatives. The characterizations of the COX derivatives by 1H NMR, FT-IR and elemental analysis were achieved. To obtain the photophysical data of the synthesized COX derivatives were used spectrophotometric and spectrofluorimetric methods. Evaluation of the absorption and emission
用7-甲氧基-2-氧代-2H-亚甲基-4-甲醛和苯甲酰基甘氨酸衍生物合成了香豆素-恶唑-5-酮(COX)3a-d。通过1 H NMR,FT-IR和元素分析对COX衍生物进行了表征。为了获得合成的COX衍生物的光物理数据,使用了分光光度法和分光荧光法。在六种不同的溶剂中对结构的吸收和发射性质进行了评估。宣布了COX衍生物的最大吸收和发射波长(λ; nm),摩尔消光系数(ε; cm -1 M -1),斯托克位移(ΔλST ; nm)和量子产率(ϕ F)。
N-Naphthoylglycine derivatives
申请人:AYERST, MCKENNA AND HARRISON INC.
公开号:EP0059596A1
公开(公告)日:1982-09-08
Herein disclosed are N-naphthoylglycine derivatives having aldose reductase inhibiting activity. The derivatives are useful for treating diabetic complications. The derivatives are of the formula
(where R' is hydrogen, lower alkyl, lower alkenyl or phenylmethyl, R2 is hydrogen or lower alkyl and R3, R4 and R5 are hydrogen or specified substituents) and therapeutically acceptable salts of the compounds wherein R2 is hydrogen. Certain intermediate amidoacids useful in the preparation of the above mentioned derivatives also have aldose reductive inhibiting effects.
Novel irreversible peptidic inhibitors of transglutaminase 2
作者:Nicholas J. Cundy、Jane Arciszewski、Eric W. J. Gates、Sydney L. Acton、Kyle D. Passley、Ernest Awoonor-Williams、Elizabeth K. Boyd、Nancy Xu、Élise Pierson、Catalina Fernandez-Ansieta、Marie R. Albert、Nicole M. R. McNeil、Gautam Adhikary、Richard L. Eckert、Jeffrey W. Keillor
DOI:10.1039/d2md00417h
日期:——
vivo. Our latest efforts in inhibitor optimization involve the modification of a previous lead compound's scaffold by insertion of various amino acid residues into the peptidomimetic backbone, and derivatization of the N-terminus with substituted phenylacetic acids, resulting in 28 novel irreversibleinhibitors. These inhibitors were evaluated for their ability to inhibit TG2 in vitro and their pharmacokinetic
转谷氨酰胺酶 2 (TG2),也称为组织转谷氨酰胺酶,在蛋白质交联和细胞信号传导中发挥着至关重要的作用。它既能催化转酰胺基作用,又能充当 G 蛋白,这些活性依赖于构象、相互排斥且受到严格调控。这两种活动的失调与许多病理学有关。 TG2 在人类中普遍表达,并且定位于细胞内和细胞外。靶向 TG2 疗法已经开发出来,但面临着许多障碍,包括体内疗效下降。我们在抑制剂优化方面的最新努力包括通过将各种氨基酸残基插入拟肽主链来修饰先前先导化合物的支架,并用取代的苯乙酸对N末端进行衍生化,从而产生 28 种新型不可逆抑制剂。评估了这些抑制剂在体外抑制 TG2 的能力及其药代动力学特性,并在癌症干细胞模型中测试了最有希望的候选药物35 ( k inact / K I = 760 × 10 3 M -1 min -1 )。尽管这些抑制剂与TG2 相比表现出卓越的效力,其k inact / K I比率比其母体化
Chimeric GFP–uracil based molecular rotor fluorophores
作者:Mria Chowdhury、Julia A. Turner、Daniela Cappello、Maryam Hajjami、Robert H. E. Hudson
DOI:10.1039/d3ob01539d
日期:——
Uracil has been modified at the 5-position to derive a small library of nucleobase-chromophores which were inspired by green fluorescent protein (GFP). The key steps in the syntheses were Erlenmeyer azlactone synthesis followed by amination by use of hexamethyl disilazane (HMDS) to produce the imidazolinone derivatives. The uracil analogues displayed emission in the green region of visible spectrum