Synthesis and preliminary evaluation steroidal antiestrogen–geldanamycin conjugates
摘要:
Three novel steroidal antiestrogen-geldanamycin conjugates were prepared using a convergent strategy. The antiestrogenic component utilized the 11 beta-(4-functionalized-oxyphenyl) estradiol scaffold, while the geldanamycin component was derived by replacement of the 17-methoxy group with an appropriately functionalized amine. Ligation was achieved in high yield using azide alkyne cyclization reactions. Evaluation of the products against two breast cancer cell lines indicated that the conjugates retained significant antiproliferative activity. (C) 2013 Published by Elsevier Ltd.
Disclosed are novel compounds and compositions for inhibition of androgen and estrogen receptor signaling, methods for inhibiting androgen signaling, methods for inhibiting estrogen signaling, methods for inhibiting the interaction between a co-regulatory protein and an androgen or estrogen receptor, and methods for treating cancer.
Novel SAR for quinazoline inhibitors of EHMT1 and EHMT2
作者:Ruben Leenders、Remco Zijlmans、Bart van Bree、Marc van de Sande、Federica Trivarelli、Eddy Damen、Anita Wegert、Daniel Müller、Jan Erik Ehlert、Daniel Feger、Carolin Heidemann-Dinger、Michael Kubbutat、Christoph Schächtele、Danny C. Lenstra、Jasmin Mecinović、Gerhard Müller
DOI:10.1016/j.bmcl.2019.06.012
日期:2019.9
structure activity relationship of two series of quinazoline EHMT1/EHMT2 inhibitors (UNC0224 and UNC0638) have been elaborated. New and active alternatives are presented for the ubiquitous substitution patterns found in literature for the linker to the lysine mimicking region and the lysine mimic itself. These findings could allow for advancing EHMT1/EHMT2 inhibitors of that type beyond tool compounds by fine-tuning
Bifunctional Fluoroalcohol Catalysts Enabled Sustainable Synthesis of Poly(amino acid)s
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作者:Wenjing He、Youhua Tao
DOI:10.1002/cjoc.202100205
日期:2021.8
were synthesized to mediate the metal-free polymerization of α-amino acid N-carboxyanhydride (NCA) monomer. Through the screening of catalysts, the polymerization catalyzed by the preferred bifunctional fluoroalcohol catalyst proceeded in a fast and controlled manner, affording high molecularweight polypeptide up to 35.2 × 104 Da with relatively narrow molecularweightdistribution (Đ < 1.20). A phenomenon
一系列基于氟化叔醇新颖的双官能单分子氢键有机催化剂的合成介导的不含金属的聚合α -氨基酸Ñ -carboxyanhydride(NCA)单体。通过催化剂的筛选,优选的双功能氟代醇催化剂催化的聚合反应以快速可控的方式进行,得到了分子量分布相对较窄(± 1.20)的高分子量多肽,可达35.2×10 4 Da 。观察到多肽α-螺旋结构引起的聚合自加速效应现象,并讨论了可能的聚合途径。
Synthesis of tris-tertiary amine CycloTriVeratrilene (TACTV) derivatives as water soluble pre-organized three aromatic ring containing molecular scaffolds for the construction of protein mimics
作者:Ondřej Longin、Helmus van de Langemheen、Susan Gannon、David Ward、Rob M.J. Liskamp
DOI:10.1016/j.tetlet.2019.151245
日期:2019.11
Tris-tertiary Amine CycloTriVeratrilene (TACTV) derivatives was developed. A semi-orthogonally protected derivative allowed one pot sequential introduction of different peptideloops toward the molecular construction of synthetic antibodyproteinmimics
Nickel-catalyzed heterocycle construction with stereoselective exocyclic alkene introduction
作者:John Montgomery、Maxim V. Chevliakov、Harry L. Brielmann
DOI:10.1016/s0040-4020(97)01027-2
日期:1997.12
A series of monocyclic and bicyclic heterocycles with exocyclic alkenes were constructed in a stereoselective fashion by an organozinc/Ni(COD)2 - mediated cyclization of alkynyl enones. Both reductive and alkylative cyclization manifolds were accessible depending on the ligand and organozinc structure. Alkylative cyclizations were generally more efficient than reductive cyclizations, particularly with