Nucleophilic Conjugate 1,5-Addition of Gilman Reagents to (E)-Hex-2-en-4-ynedioates: An Access to β(γ′)-Substituted Muconates
摘要:
An unusual nucleophilic conjugate addition of organocuprates to enynedioates resulted in chemo- and regioselective formation of ()-addition products, rather than ()-addition products, in moderate to good yields. This addition pattern is different from that with organophosphanes or alkyl amines, and presents a short and efficient method for the preparation of various ()-alkyl- or -aryl-substituted muconates compared with other synthetic approaches.
Revisiting Bromohexitols as a Novel Class of Microenvironment‐Activated Prodrugs for Cancer Therapy
作者:Henrik Johansson、Omar Hussain、Simon J. Allison、Tony V. Robinson、Roger M. Phillips、Daniel Sejer Pedersen
DOI:10.1002/cmdc.201900578
日期:2020.1.17
even subtle changes in stereochemistry. However, no attempts have been made to improve the therapeutic window by rational drug design or by using a prodrug approach to exploit differences between tumour physiology and healthy tissue, such as acidic extracellular pH and hypoxia. Herein, we report the photochemical synthesis of highly substituted endoperoxides as key precursors for dibromohexitol derivatives