Substrate-guided optimization of the syringolins yields potent proteasome inhibitors with activity against leukemia cell lines
摘要:
Natural products that inhibit the proteasome have been fruitful starting points for the development of drug candidates. Those of the syringolin family have been underexploited in this context. Using the published model for substrate mimicry by the syringolins and knowledge about the substrate preferences of the proteolytic subunits of the human proteasome, we have designed, synthesized, and evaluated syringolin analogs. As some of our analogs inhibit the activity of the proteasome with second-order rate constants 5-fold greater than that of the methyl ester of syringolin B, we conclude that the substrate mimicry model for the syringolins is valid. The improvements in in vitro potency and the activities of particular analogs against leukemia cell lines are strong bases for further development of the syringolins as anti-cancer drugs. (c) 2015 Elsevier Ltd. All rights reserved.
[EN] NOVEL SYRINGOLIN ANALOGUES AND METHODS OF MAKING AND USING SAME [FR] NOUVEAUX ANALOGUES DE SYRINGOLINE ET PROCÉDÉS DE FABRICATION ET D'UTILISATION DE CEUX-CI
作者:Michael C. Pirrung、Goutam Biswas、Tannya R. Ibarra-Rivera
DOI:10.1021/ol100761z
日期:2010.5.21
Total syntheses of two recently discovered proteasome inhibitors, syringolin A and B, are reported. The key to our approach was creation of the α,β-unsaturated 12-membered lactam via intramolecular Horner−Wadsworth−Emmons reaction. Such reactions have been broadly used to prepared macrolactones, but this work presents a rarer example of its application to macrolactams. The final steps involved attachment
Syringolin analogues and methods of making and using same
申请人:BROWN UNIVERSITY
公开号:US10597368B2
公开(公告)日:2020-03-24
The present invention provides, in certain aspects, novel syringolin analogues, In certain embodiments, the compounds of the invention are proteasome inhibitors, In other embodiments, the compounds treat or prevent a cancer such as, but not limited to, leukemia in a subject.
Syntheses and cytotoxicity of syringolin B-based proteasome inhibitors
作者:Tannya R. Ibarra-Rivera、John Opoku-Ansah、Sudhakar Ambadi、André S. Bachmann、Michael C. Pirrung
DOI:10.1016/j.tet.2011.09.048
日期:2011.12
The concise and modular total synthesis of the bacterial natural product and irreversible proteasome inhibitor syringolin B has been achieved. This synthesis has enabled the ready preparation of three diverse, structurally modified syringolin derivatives. The actions of these compounds in inhibiting the proliferation of neuroblastoma cell lines was evaluated, and significant enhancements in potency compared to the natural product were realized. (C) 2011 Elsevier Ltd. All rights reserved.
Novel Syringolin Analogues and Methods of Making and Using Same
申请人:Brown University
公开号:US20190010133A1
公开(公告)日:2019-01-10
The present invention provides, in certain aspects, novel syringolin analogues, In certain embodiments, the compounds of the invention are proteasome inhibitors, In other embodiments, the compounds treat or prevent a cancer such as, but not limited to, leukemia in a subject.
NOVEL SYRINGOLIN ANALOGUES AND METHODS OF MAKING AND USING SAME
申请人:BROWN UNIVERSITY
公开号:US20200216401A1
公开(公告)日:2020-07-09
The present invention provides, in certain aspects, novel syringolin analogues, In certain embodiments, the compounds of the invention are proteasome inhibitors, In other embodiments, the compounds treat or prevent a cancer such as, but not limited to, leukemia in a subject,