Syntheses and cytotoxicity of syringolin B-based proteasome inhibitors
摘要:
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.
Syntheses and cytotoxicity of syringolin B-based proteasome inhibitors
摘要:
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.
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