A parallel synthesis approach towards a family of C-nucleosides
摘要:
A synthetic route was devised for a sugar based alpha-chloroketone, which was subsequently used to generate a family of C-nucleosides via parallel synthetic methodology. (C) 2003 Elsevier Ltd. All rights reserved.
The aerobic oxidation is an attractive approach toward environmentally benign synthesis of fine chemicals. In addition, dye-sensitized semiconductors are underdeveloped photocatalysts for selective organic synthesis. With the aid of catalytic eosin Y-sensitized titanium dioxide, we have developed efficient aerobic photooxidation of benzyl ethers to benzoates, featuring low cost, high atom economy,
Baker'syeastmediated reduction of the α-acetoxy ketones (1)–(3) proceeds with high enantio- and stereoselectivity to give the carbinols (4)–(6), easily converted into the masked chiral deoxy sugars (12)–(14), from which =D}- and =L}-deoxysugars have been obtained.