Judicious combination of P-region sequences of highly potent anticoagulant proteins including NAPS, NAP6, Ecotin, and Antistasin with SAR from small molecule FXa inhibitors led to a series of chimeric inhibitors of formula 1a-j. We report herein the design, synthesis, and biological activity of this novel family of FXa inhibitors that express both high in vitro potency and superb selectivity against related serine proteases. (C) 2000 Elsevier Science Ltd. All rights reserved.
Immunoproteasome Inhibitor–Doxorubicin Conjugates Target Multiple Myeloma Cells and Release Doxorubicin upon Low-Dose Photon Irradiation
作者:Elmer Maurits、Michel J. van de Graaff、Santina Maiorana、Dennis P. A. Wander、Patrick M. Dekker、Sabina Y. van der Zanden、Bogdan I. Florea、Jacques J. C. Neefjes、Herman S. Overkleeft、Sander I. van Kasteren
DOI:10.1021/jacs.9b11969
日期:2020.4.22
are anthracyclines such as doxorubicin. We here present a new drug targeting approach that combines both drug classes into a single molecule. Doxorubicin was conjugated to an immunoproteasome-selective inhibitor via light-cleavable linkers, yielding peptide epoxyketone–doxorubicin prodrugs that remained selective and active toward immunoproteasomes. Upon cellular uptake and immunoproteasome inhibition
Synthesis of the hydroxyethylene dipeptide isostere, (2S,4S,5S)-5-amino-6-cyclohexyl-4-hydroxy-2-isopropyl hexanoic acid n-butyl amide
作者:Michael A. Poss、Joyce A. Reid
DOI:10.1016/s0040-4039(00)91634-4
日期:1992.3
A stereoselectivesynthesis of the hydroxyethylenedipeptideisostere, (2S,4S,5S)-5-amino-6-cyclohexyl-4-hydroxy-2-isopropyl hexanoic acid n-butyl amide from Boc-L-phenylalanine is described.
Macrocyclic Immunoproteasome Inhibitors as a Potential Therapy for Alzheimer’s Disease
作者:Min Jae Lee、Deepak Bhattarai、Hyeryung Jang、Ahreum Baek、In Jun Yeo、Seongsoo Lee、Zachary Miller、Sukyeong Lee、Jin Tae Hong、Dong-Eun Kim、Wooin Lee、Kyung Bo Kim
DOI:10.1021/acs.jmedchem.1c00291
日期:2021.8.12
(iP)-targeting linear peptideepoxyketones improve cognitive function in mouse models of Alzheimer’sdisease (AD) in a manner independent of amyloid β. However, these compounds’ clinical prospect for AD is limited due to potential issues, such as poor brain penetration and metabolic instability. Here, we report the development of iP-selective macrocyclicpeptideepoxyketones prepared by a ring-closing
此前,我们报道了免疫蛋白酶体(iP)靶向的线性肽环氧酮以独立于β淀粉样蛋白的方式改善阿尔茨海默病(AD)小鼠模型的认知功能。然而,由于大脑渗透性差和代谢不稳定等潜在问题,这些化合物治疗 AD 的临床前景受到限制。在这里,我们报道了 iP 选择性大环肽环氧酮的开发,该酮是通过连接在线性对应物的 P2 和 P3/P4 位置上的两个末端烯烃之间的闭环复分解反应制备的。我们发现,先导大环化合物 DB-60 ( 20 ) 能有效抑制 ABCB1 过表达细胞中 iP 的催化活性 (IC 50 : 105 nM),并且具有优于其线性对应物的代谢稳定性。 DB-60 ( 20 ) 还降低了 Tg2576 小鼠的血清 IL-1α 水平并改善了认知缺陷。这些结果共同表明,大环肽环氧酮比其线性对应物具有改善的中枢神经系统药物特性,并且作为 AD 候选药物具有广阔的潜力。
Difluoro Ketone Peptidomimetics Suggest a Large S1 Pocket for Alzheimer's γ-Secretase: Implications for Inhibitor Design
作者:Chad L. Moore、Dartha D. Leatherwood、Thekla S. Diehl、Dennis J. Selkoe、Michael S. Wolfe
DOI:10.1021/jm000100f
日期:2000.9.1
implicated in the etiology of Alzheimer's disease, is proteolysis within the transmembrane region of the amyloid precursor protein (APP) by gamma-secretase. Although considered an important target for therapeutic design, gamma-secretase has been neither well-characterized nor definitively identified. Previous studies in our laboratory using substrate-baseddifluoroketone and difluoro alcohol transition-state
Compounds of the formula ##STR1## wherein Z is SO or SO.sub.2 possess renin inhibition activity and are useful in treating hypertension and other diseases where the reduction of the levels of circulating angiotensin II are beneficial.