4-Hydroxynon-2-enal, a cytotoxic lipid peroxidation product, and its C5-analog 4-hydroxypent-2-enal: Enantioselective synthesis and stereoanalysis
摘要:
A stereoselective synthesis of the lipid peroxidation products 4-hydroxypent-2-enal (1a) and 4-hydroxynon-2-enal (1b) in high optical purity is presented. The configuration of 1a and b was established by Ru(III)-catalyzed oxidative degradation and subsequent stereoanalysis of the resulting alpha-hydroxy acids. It was demonstrated that 1a is configuratively stable under physiological conditions.
Synthesis of Modified Nucleosides for Incorporation of Formyletheno and Carboxyetheno Adducts of Adenine Nucleosides into Oligonucleotides
作者:Niangoran Koissi、Harri Lönnberg
DOI:10.1080/15257770701527836
日期:2007.11.26
Three protected derivatives of 1,N6-ethenoadenine nucleosides, viz. 3-[5-O-(4,4 ′-dimethoxytrityl) of 7-formyl-(1) and 7-(1,2-diacetyloxypropyl)-2 ′-deoxyadenosine (2), and 3-[5-O-(4,4 ′-dimethoxytrityl)-2-O-(tert-butyldimethylsilyl)-7-(ethoxycarbonyl)adenosine (3), expected to allow introduction of formyletheno and carboxyethenoadenine adducts into oligonucleotides by the conventional phosphoramidite