630110-71-3Relevant articles and documents
Iodine-Mediated Tryptathionine Formation Facilitates the Synthesis of Amanitins
Braun, Alexandra C.,Hechler, Torsten,Keller, Bettina G.,Knittel, Caroline H.,Kosol, Simone,Lutz, Christian,Pahl, Andreas,Wenz, Marius T.,Yao, Guiyang,Gru?, Hendrik,Süssmuth, Roderich D.
, p. 14322 - 14331 (2021/09/13)
Synthetic methods on the macrocyclization of peptides are of high interest since they facilitate the synthesis of various types of potentially bioactive compounds, e.g. addressing targets like protein-protein-interactions. Herein, we report on an efficient method to construct tryptathionine-cross-links in peptides between the amino acids Trp and Cys. This reaction not only is the basis for the total synthesis of the death cap toxin α-amanitin but also provides rapid access to various new amanitin analogues. This study for the first time presents a systematic compilation of structure-activity relations (SAR) of amatoxins with regard to RNA polymerase II inhibition and cytotoxicity with one amanitin derivative of superior RNAP II inhibition. The present approach paves the way for the synthesis of structurally diverse amatoxins as future payloads for antibody-toxin conjugates in cancer therapy.
Structure-guided design, synthesis, and biological evaluation of (2-(1 H-Indol-3-yl)-1 H-imidazol-4-yl)(3,4,5-trimethoxyphenyl) methanone (ABI-231) analogues targeting the colchicine binding site in Tubulin
Wang, Qinghui,Arnst, Kinsie E.,Wang, Yuxi,Kumar, Gyanendra,Ma, Dejian,White, Stephen W.,Miller, Duane D.,Li, Wei,Li, Weimin
, p. 6734 - 6750 (2019/08/20)
ABI-231 is a potent, orally bioavailable tubulin inhibitor that interacts with the colchicine binding site and is currently undergoing clinical trials for prostate cancer. Guided by the crystal structure of ABI-231 in complex with tubulin, we performed structure-activity relationship studies around the 3-indole moiety that led to the discovery of several potent ABI-231 analogues, most notably 10ab and 10bb. The crystal structures of 10ab and 10bb in complex with tubulin confirmed their improved molecular interactions to the colchicine site. In vitro, biological studies showed that new ABI-231 analogues disrupt tubulin polymerization, promote microtubule fragmentation, and inhibit cancer cell migration. In vivo, analogue 10bb not only significantly inhibits primary tumor growth and decreases tumor metastasis in melanoma xenograft models but also shows a significant ability to overcome paclitaxel resistance in a taxane-resistant PC-3/TxR model. In addition, pharmacological screening suggested that 10bb has a low risk of potential off-target function.
An efficient synthetic route to homocarbonyltopsentine
Montagne, Cyril,Fournet, Guy,Joseph, Beno?t
, p. 1533 - 1535 (2007/10/03)
Efficient synthesis of homocarbonyltopsentine Ia, starting from readily available triiodoimidazole 9 and 3-formylindoles 2 and 18 is described. The key steps of the synthesis are selective halogen-metal exchanges at the imidazole nucleus and subsequent ad
