A diversity oriented synthesis of d - erythro -sphingosine and siblings
摘要:
An efficient building block-based synthetic protocol has been developed for the synthesis of 3-keto-sphingoids with various chain lengths using cross metathesis of a Garner's aldehyde-derived alpha,beta-unsaturated ketone as the key step. Stereoselective reduction of the biomimetic precursors thus obtained provided D-elythro-sphingosine and truncated anaogues in good overall yields. (C) 2017 Elsevier Ltd. All rights reserved.
Syntheses of sphingosine-1-phosphate analogues and their interaction with EDG/S1P receptors
摘要:
Sphingosine-I-phosphate (SIP) is an important regulator of a wide variety of biological processes acting as an endogenous ligand to EDG/S1P receptors. In an effort to establish structure-activity relationship between EDG/S1P and ligands, we report herein homology modeling study of EDG-1/S1P(1), syntheses of S I P analogues, and cell based binding affinity study for EDG/S1P receptors. (C) 2004 Elsevier Ltd. All rights reserved.
The first totalsynthesis of three echinodermatous sialyl inositol phosphosphingolipids, which exhibit unusual neuritogenic activity in the absence of nerve growth factor, are reported. Highlights of the syntheses include 9-O-methylation on sialic acid, inter-residual amide bond formation between sialic acid residues, and highly stereo- and regioselective sialylation of inositol. A key phosphodiester