Iodonium ion-assisted synthesis of a tetrameric fragment corresponding to the cell wall phenolic glycolipids of Mycobacterium kansasii serovar I

An efficient and cost-effective preparation of di-O-acetyl-D-rhamnal

We have developed a synthetic route to the frequently utilized deoxysugar building block di-O-acetyl-D-rhamnal originating from the inexpensive starting material methyl α-D-glucopyranoside. Our approach proceeds in five steps with minimal column chromatography purification needed to afford the title compound in good overall yield. 2009 Elsevier Ltd. All rights reserved.

Enzymes and protecting group chemistry

Enzymatic protecting group techniques are increasingly finding their use in almost all areas of synthetic organic chemistry. Some of the recent papers have dealt with the use of such protecting groups in combination with classical methods. The modification of known protecting groups to increase the efficiency and selectivity of deprotection is on the rise. The methodology needs to be explored more intensively and systematically to realise its full potential.