Ligand Recognition by E- and P-Selectin: Chemoenzymatic Synthesis and Inhibitory Activity of Bivalent Sialyl Lewis x Derivatives and Sialyl Lewis x Carboxylic Acids
作者:Valentin Wittmann、Shuichi Takayama、Ke Wei Gong、Gabriele Weitz-Schmidt、Chi-Huey Wong
DOI:10.1021/jo980350s
日期:1998.7.1
Described is the preparation of five sLe(x) dimers and five sLe(x) carboxylic acids by coupling chemoenzymatically synthesized amino-substituted sialyl Lewis x (sLe(x)) derivative 4 to homobifunctional cross-linkers 20-24 of varying chain length. 20-24 were obtained by alkylating low-molecular-weight oligoethylene glycols with tert-butyl bromoacetate and subsequent transformation of the di-tert-butyl esters into disuccinimide esters. The products were assayed for inhibition against binding of a sLe(a)-polymer to immobilized E- and P-selectin. In the E-selectin assay all dimers had lower IC50 values than the sLex monomer. The results show that comparable binding enhancements can be obtained with linkers of completely different length and rigidity. In the P-selectin assay four of the five sLe(x) carboxylic acids displayed significantly improved inhibitory potency. The lowest IC50 value was observed for the compound with the shortest spacer between the sLex moiety and the additional carboxylate, being ca. 20-40 times more potent than unmodified sLex. These findings should be of importance for the design of new multivalent forms of sLe(x) as well as sLe(x) mimetics as high-affinity selectin ligands.
[EN] HETEROBIFUNCTIONAL MOLECULES AS TEAD INHIBITORS<br/>[FR] MOLÉCULES HÉTÉROBIFONCTIONNELS UTILISÉES EN TANT QU'INHIBITEURS DE TEAD
申请人:[en]MERCK PATENT GMBH
公开号:WO2023078813A1
公开(公告)日:2023-05-11
Compounds of the formula (I) Q1-Q2-Q3(I) in which Q1, Q2and Q3have the meanings indicated in Claim 1, degrade target proteins, and can be employed, inter alia, for the treatment of diseases and conditions mediated by such target proteins.
[EN] SAPONIN-BASED ADJUVANTS AND VACCINES<br/>[FR] ADJUVANTS ET VACCINS À BASE DE SAPONINES
申请人:[en]ASOCIACIÓN CENTRO DE INVESTIGACIÓN COOPERATIVA EN BIOCIENCIAS-CIC BIOGUNE
公开号:WO2023139145A1
公开(公告)日:2023-07-27
The present application relates to adjuvants and adjuvant-antigen conjugate vaccines based on a triterpene glycoside saponin scaffold incorporating a ketone (-C=O) or an oxime group (-C=N-O-) as position C3 of the triterpene domain and pharmaceutical compositions thereof as well as the use of said compounds and compositions in the treatment of and immunization for diseases such as neurodegenerative and infectious diseases and cancers.
WO2023/99741
申请人:——
公开号:——
公开(公告)日:——
Basic N-interlinked imipramines show apoptotic activity against malignant cells including Burkitt’s lymphoma
作者:Sandra A. Bright、Anne Brinkø、Maja Thim Larsen、Steffen Sinning、D. Clive Williams、Henrik H. Jensen
DOI:10.1016/j.bmcl.2013.01.020
日期:2013.3
the synthesis of ethylene glycol N-interlinked imipramine dimers of various lengths from the tricyclic antidepressant desipramine via an amide coupling reaction followed by reduction with lithium aluminium hydride. The target molecules were found to be potent inhibitors of cellular viability while inducing cell type specific death mechanisms in three cancer cell lines including a highly chemoresistant