A concise sequence utilizing a Petasis three component reaction followed by a tandem aza-Cope–Mannich cyclization afforded novel polycyclic heterocycles in good yield; alternative iminium cyclization based on a Pictet–Spengler reaction or aminal formation led to divergent pathways affording skeletal diversity.
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