Effect of Aromatic Short-Chain Analogues of Ceramide on Axonal Growth in Hippocampal Neurons
摘要:
A series of D-erythro- and L-threo-ceramide analogues was synthesized and investigated for their ability to reverse the inhibitory effects of fumonisin B-1 (FB1) on axonal growth in hippocampal neurons. The analogues contained either a C-7 Side chain or a phenyl group substituted for the C-13 residue present in naturally occurring ceramides, while the N-acyl chain length was reduced from C-16-C-24 to C-2-C-8. D-erythro-Ceramide 18a with a C-7 Side chain and an N-acetyl residue and D-erythro-ceramide 20c with an aromatic side chain and an N-hexanoyl residue were most active in reversing the inhibitory effects of FB1 on axonal growth, although the mechanism remains unclear.
Synthesis and biological properties of novel sphingosine derivatives
摘要:
Sphingosine-1-phosphate (S-1P) derivatives such as threo-(2S,3S)-analogues, which are C-3 stereoisomers of natural erythro-(2S,3R)-S-1P, have been synthesized starting from L-serine or (IS,2S)-2-amino-1-aryl-1,3-propanediols (6). threo-(IS,2R)2-Amino-1-aryl-3-bromopropanols (HBr salt) have also been prepared from 6. The threo-S-1Ps and the threo-amino-bromide derivatives have shown potent inhibitory activity against Ca2+ ion mobilization in HL60 cells induced by erythro-S-1P, suggesting that these compounds would compete with cell surface EDG/S1P receptors. (C) 2004 Elsevier Ltd. All rights reserved.
Efficient stereodivergent synthesis of erythro- and threo-sphingosines: unprecedented reversal of the stereochemistry in the addition
作者:Teiichi Murakami、Kiyotaka Furusawa
DOI:10.1016/s0040-4020(02)01190-0
日期:2002.11
A convenient diastereoselective synthesis of d-erythro- and l-threo-sphingosine derivatives is described. l-Serine-derived aldehyde (Garner's aldehyde) (2) was treated with 1-alkenyl-zirconocene chlorides (3) in the presence of ZnBr2 in THF to give the natural erythro-(anti-) isomers with high diastereoselectivity (anti/syn=12–20:1). In contrast, reaction of 2 with 1-alkenyl-ethyl-zinc, prepared from
的D-阿方便非对映选择性合成赤-和1-苏式-sphingosine衍生物进行说明。L-丝氨酸衍生的醛(加纳的醛)(2)与1-链烯基锆氯化物(处理3在ZnBr的存在下)2在THF中以得到天然赤- (反- )具有高非对映选择性异构体(反/ syn = 12–20:1)。相反,2与由3和Et 2 Zn制备的1-烯基-乙基-锌在CH 2 Cl 2中的反应产生了不自然的苏氨酸-(syn-)异构体为主(anti / syn = 1:12-15)。
Structure-activity relationship of short-chain sphingoid bases as inhibitors of sphingosine kinase
作者:Steven De Jonghe、Ilse Van Overmeire、Samantha Poulton、Chris Hendrix、Roger Busson、Serge Van Calenbergh、Denis De Keukeleire、Sarah Spiegel、Piet Herdewijn
DOI:10.1016/s0960-894x(99)00554-5
日期:1999.11
Short-chain sphinganine analogues 8, 9, 18, and 19 as well as 3-fluoro-sphingosine analogues 25 and 26 were synthesized. Their potential as sphingosine kinase inhibitors was investigated, in combination with previously synthesized sphingosine and fluorinated sphinganine analogues. (C) 1999 Elsevier Science Ltd. All rights reserved.