Novel 1-N-aminoalkyl (oxycarbonyl or carboxamido or thiocarboxamido) derivatives of 4,6-di-O-(aminoglycosyl)-1,3-diaminocyclitols, useful as antibacterial agents, are described.
New synthesis of glycolipid immunostimulants RC-529 and CRX-524
作者:Hélène G. Bazin、Laura S. Bess、Mark T. Livesay、Kendal T. Ryter、Craig L. Johnson、Jeffrey S. Arnold、David A. Johnson
DOI:10.1016/j.tetlet.2006.01.137
日期:2006.3
An efficient and scalable synthesis of the potent vaccine adjuvant RC-529 (3) and TLR4 agonist CRX-524 (4) is described in eight steps from 1,3,4,6-tetra-O-acetyl-2-amino-2-benzyloxycarbonyl-2-deoxy-β-d-glucopyranose (10c) in ca. 25% overall yield. The synthesis features the strategic use of the N-Cbz group for β-glycosylation and the selective N,N,O-triacylation of common advanced intermediate 15