Nucleosides, LVIII1 Synthesis of Base - Modified Oligonucleotides Containing 6- and 7-Aryl Lumazines
摘要:
6-Phenyl-, 7-phenyl-, 6-(4-biphenyl)-7-(4-biphenyl)lumazine N-1-2-deoxy-beta-D-ribofuranosides were synthesized, then converted into the corresponding 5'-O-dimethoxytrityl-3'-O-(beta-cyanoethyl, N,N-diisopropyl)phosphoramidites and incorporated into different positions of self-complementary oligonucleotides. The influence of modifications on the melting temperature of the resulting duplexes was studied.
Determination of Triazines in Water Samples by High-Performance Liquid Chromatography with Diode-Array Detection
作者:M. S. Dopico、M. V. Gonzalez、J. M. Castro、E. Gonzalez、J. Perez、M. Rodriguez、A. Calleja
DOI:10.1093/chromsci/40.9.523
日期:2002.10.1
Triazines are widely used herbicides that can be detected in the environment at trace level. A preconcentration step is necessary to determinate them before analysis. In this study, carbonaceous and polymeric adsorbents are compared with C18 for the solid-phase extraction of simazine, atrazine, and propazine in water samples in order to quantitate their levels by high-performance liquid chromatography using photodiode-array detection.
Process for manufacturing purified phosphorodiamidite
申请人:——
公开号:US20030225284A1
公开(公告)日:2003-12-04
A scalable process for purification of phosphorodiamidite includes steps of solubilizing a crude phosphorodiamidite in an apolar organic solvent, contacting the non-polar organic solvent with a polar phase comprising a polar organic solvent to remove impurities from the solubilized phosphorodiamidite, and removing the non-polar organic solvent from the phosphorodiamidite.
Solvent-free regioselective synthesis of 6-and 7-substituted pteridines under microwave irradiation
作者:R. Singh、Geetanjali
DOI:10.1134/s1070428006010210
日期:2006.1
Reactions of 5,6-diaminouracils with a-keto aldehydes over acidic and neutral aluminum oxide under microwave irradiation gave the corresponding 6- and 7-substituted 1,2,3,4-tetrahydropteridine-2,4-diones in 63-79% yield with high regioselectivity.
Angier, Journal of Organic Chemistry, 1963, vol. 28, p. 1398,1400
作者:Angier
DOI:——
日期:——
YONEDA F.; HIGUCHI M., J. CHEM. SOC. PERKIN TRANS., PART 1 <JCPK-BH>, 1977, NO 11, 1336-1339