56074-20-5Relevant articles and documents
Trifunctional reagents for substrate-protein conjugation: Application to pyrrolizidine alkaloid analogues
Kurth,Milco,Miller
, p. 1407 - 1416 (1992)
We report the syntheses of two pyrrolizidine alkaloid (PA) analogues (1 and 2) which exploit the novel substrate-protein coupling reagents 4 and 5. Analogues 1 and 2 incorporate the targeted PA substructural unit (i.e., a macrocyclic diester of retronecine), possess a handle for protein conjugation, and potentially maintain the conformational integrity of macrocyclic PAs.
Versatile approach to encoding combinatorial organic syntheses using chemically robust secondary amine tags
Ni, Zhi-Jie,Maclean, Derek,Holmes, Christopher P.,Murphy, Martin M.,Ruhland, Beatrice,Jacobs, Jeffrey W.,Gordon, Eric M.,Gallop, Mark A.
, p. 1601 - 1608 (1996)
Encoded combinatorial organic synthesis has recently emerged as a powerful tool for the discovery of biologically active compounds from complex chemical libraries. This report describes a new encoding methodology that uses chemically robust secondary amines as tags. These amines are incorporated into an N-[(dialkylcarbamoyl)methyl]glycine-coding oligomer through simple chemistry that is compatible with a wide range of polymer-supported transformations useful in combinatorial synthesis. In the decoding process acidic hydrolysis of the tagging polymer regenerates the secondary amines, which after dansylation are resolved and detected at sub-picomole levels by reversed-phase HPLC. The versatility of this strategy is demonstrated here by encoded syntheses of members of several representative heterocyclic compound classes, including β-lactams, 4-thiazolidinones, and pyrrolidines.
Design, synthesis and evaluation of novel bifunctional tetrahydroxamate chelators for PET imaging of89Zr-labeled antibodies
Rousseau, Julie,Zhang, Zhengxing,Dias, Gemma M.,Zhang, Chengcheng,Colpo, Nadine,Bénard, Fran?ois,Lin, Kuo-Shyan
, p. 708 - 712 (2017)
Two compact and symmetrical bifunctional tetrahydroxamate chelators, 1 and 2, were synthesized and evaluated for labeling antibodies with89Zr for imaging with positron emission tomography. Using 2,2′-iminodiacetamide as the backbone, four hydro
CONJUGATES OF A CELL-BINDING MOLECULE WITH CAMPTOTHECIN ANALOGS
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Page/Page column 212, (2021/10/30)
Provided are conjugates of camptothecin analogs with a cell-binding molecule of formula (I), wherein R1, R2, R3, R4, R5, X, L, n, m, T and ----- are defined herein. It also provides methods of making the conjugates of camptothecin analogs to a cell-binding agent, as well as methods of using the conjugates in targeted treatment of cancer, infection, and immunological disorders.
Selective Extraction and Complexation Studies for Thorium(IV) with Bis-triamide Extractants: Synthesis, Solvent Extraction, EXAFS, and DFT
Kang, Jinyang,Wu, Rulei,Li, Long,Hu, Haiyang,Fan, Yu,Jin, Yongdong,Huang, Chao,Chen, Jing,Xu, Chao,Xia, Chuanqin
, p. 14212 - 14220 (2021/09/20)
Three octyl-extended bis-triamide extractants (L1-L3) were designed and synthesized for the selective solvent extraction of Th(IV) over U(VI) in a kerosene-HNO3system. L1 and L2 exhibited good extraction property and selectivity toward Th(IV) o
Rigid Scaffolds: Synthesis of 2,6-Bridged Piperazines with Functional Groups in all three Bridges
Gao, Donglin,Penno, Christian,Wünsch, Bernhard
, p. 874 - 889 (2020/09/02)
The activity of pharmacologically active compounds can be increased by presenting a drug in a defined conformation, which fits exactly into the binding pocket of its target. Herein, the piperazine scaffold was conformationally restricted by substituted C
Substance related with tophatib and preparation method and application thereof
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, (2019/01/08)
The invention discloses a substance related with tophatib and a preparation method and application thereof. The substance is named as N,N'-diacetyl{(3R,4R)-4-methyl-3-[methyl(7H-pyrrole[2,3-D]pyrimidine-4-yl)amine]piperidine-1-yl}imine. The impurity is characterized in that the generation level is lower in the condensation reaction process; however, the impurity has the uniform main functional groups with the tophatib, the cleaning effect is limited in the subsequent salting and refining process, and the influence to the qualities of crude drug and finished product of tophatib is larger; by detecting the existence of the impurity, the qualities of the raw material and preparation of the tophatib can be effectively determined.
IONIZABLE CATIONIC LIPID FOR RNA DELIVERY
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Paragraph 0734; 0735; 0736; 0737, (2018/07/05)
What is described is a compound of formula I consisting of a compound in which R1 is a branched chain alkyl consisting of 10 to 31 carbons;R2 is a linear alkyl, alkenyl, or alkynyl consisting of 2 to 20 carbons, or a branched chain alkyl consisting of 10 to 31 carbons;L1 and L2 are the same or different, each a linear alkane of 1 to 20 carbons or a linear alkene of 2 to 20 carbons;X1 is S or O;R3 is a linear or branched alkylene consisting of 1 to 6 carbons; andR4 and R5 are the same or different, each a hydrogen or a linear or branched alkyl consisting of 1 to 6 carbons; or a pharmaceutically acceptable salt thereof.
Preparation and application of novel bitriamide organic compounds
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Paragraph 0025-0027, (2017/08/28)
The invention belongs to the field of radioactive waste treatment and discloses CHON-element-containing amide organic compounds which can be applied to uranium [U(VI)]/thorium[Th(IV)] separation, plutonium[Pu(IV)]/uranium[U(VI)] separation, lanthanum[Ln(I
Structure-activity relationships of imidazole-derived 2-[ N-carbamoylmethyl-alkylamino]acetic acids, dual binders of human insulin-degrading enzyme
Charton, Julie,Gauriot, Marion,Totobenazara, Jane,Hennuyer, Nathalie,Dumont, Julie,Bosc, Damien,Marechal, Xavier,Elbakali, Jamal,Herledan, Adrien,Wen, Xiaoan,Ronco, Cyril,Gras-Masse, Helene,Heninot, Antoine,Pottiez, Virginie,Landry, Valerie,Staels, Bart,Liang, Wenguang G.,Leroux, Florence,Tang, Wei-Jen,Deprez, Benoit,Deprez-Poulain, Rebecca
, p. 547 - 567 (2015/03/18)
Insulin degrading enzyme (IDE) is a zinc metalloprotease that degrades small amyloid peptides such as amyloid-a and insulin. So far the dearth of IDE-specific pharmacological inhibitors impacts the understanding of its role in the physiopathology of Alzheimer's disease, amyloid-a clearance, and its validation as a potential therapeutic target. Hit 1 was previously discovered by high-throughput screening. Here we describe the structure-activity study, that required the synthesis of 48 analogues. We found that while the carboxylic acid, the imidazole and the tertiary amine were critical for activity, the methyl ester was successfully optimized to an amide or a 1,2,4-oxadiazole. Along with improving their activity, compounds were optimized for solubility, lipophilicity and stability in plasma and microsomes. The docking or co-crystallization of some compounds at the exosite or the catalytic site of IDE provided the structural basis for IDE inhibition. The pharmacokinetic properties of best compounds 44 and 46 were measured in vivo. As a result, 44 (BDM43079) and its methyl ester precursor 48 (BDM43124) are useful chemical probes for the exploration of IDE's role.