Nirmatrelvir (PF-07321332) 是一种含腈小分子抑制剂,与利托那韦联合用于治疗严重急性呼吸综合征冠状病毒-2 (SARS-CoV-2) 感染。Nirmatrelvir 通过抑制 SARS-CoV-2 主要蛋白酶 (M pro )来中断病毒生命周期,该蛋白酶对于将病毒多蛋白加工成功能性非结构蛋白至关重要。我们报告的研究表明,nirmatrelvir 和其他 M pro抑制剂的衍生物(具有与 nirmatrelvir 的亲电子腈位置相似的未激活末端炔基)可以有效抑制细胞中分离的 M pro和 SARS-CoV-2 复制。质谱和晶体学证据表明,炔烃衍生物通过与活性位点半胱氨酸 (Cys145) 发生明显不可逆共价反应来抑制 M pro ,而类似的腈则发生可逆反应。结果强调了炔烃对 M pro和其他亲核半胱氨酸蛋白酶具有不可逆共价抑制作用的潜力,与腈相反,炔烃可以在其末端位置
The present invention relates to methods of treating cancer using a combination of a compound which is a PSA conjugate and a compound which is a inhibitor of prenyl-protein transferase, which methods comprise administering to said mammal, either sequentially in any order or simultaneously, amounts of at least two therapeutic agents selected from a group consisting of a compound which is a PSA conjugate and a compound which is a inhibitor of prenyl-protein transferase. The invention also relates to methods of preparing such compositions.
A practical method for the combinatorial synthesis of peptide aldehydes
作者:Beverley J. Hall、John D. Sutherland
DOI:10.1016/s0040-4039(98)01374-4
日期:1998.9
A practical strategy for solid phase synthesis of peptide aldehydes is described. An olefin linker is constructed using Wittig chemistry, after peptidesynthesis ozonolytic treatment of the linker and subsequent workup with dimethyl sulphide results in facile isolation of peptide aldehydes. The principle is demonstrated by synthesis of a 3×3×3 array of 27 tripeptide aldehydes.
作者:Jens Engel-Andreasen、Isabelle Wellhöfer、Kathrine Wich、Christian A. Olsen
DOI:10.1021/acs.joc.7b01744
日期:2017.11.3
incorporated as a peptide bond bioisostere to provide protease resistance in peptidomimetics. Herein, we report the synthesis of peptidomimetic buildingblocks containing backbone-fluorinated 1,4-disubstituted 1,2,3-triazole moieties. Synthetic protocols for the preparation of various Xaa-Gly dipeptide surrogates in the form of Xaa-ψ[triazole]-F2Gly buildingblocks were established, and selected examples were
The present invention comprises low molecular weight peptidyl compounds that inhibit the farnesyl-protein transferase. Furthermore, these compounds differ from the mono- or dipeptidyl analogs previously described as inhibitors of farnesyl-protein transferase in that they do not have a thiol moiety. The lack of the thiol offers unique advantages in terms of improved pharmacokinetic behavior in animals, prevention of thiol-dependent chemical reactions, such as rapid autoxidation and disulfide formation with endogenous thiols, and reduced systemic toxicity. Further contained in this invention are chemotherapeutic compositions containing these farnesyl transferase inhibitors and methods for their production.
[EN] CATHEPSIN INHIBITORS<br/>[FR] INHIBITEURS DE LA CATHEPSINE
申请人:MERCK FROSST CANADA INC
公开号:WO2005021487A1
公开(公告)日:2005-03-10
This invention relates to a novel class of compounds, represented by the formula (I) below, wherein the meanings of R1, R2, R3 and R4 are indicated therein, which are cysteine protease inhibitors, including but not limited to, inhibitors of cathepsins K, L, S and B. These compounds are useful for treating diseases in which inhibition of bone resorption is indicated, such as osteoporosis, osteoarthritis and rheumatoid arthritis.