Asymmetrichydroformylation of heterocyclic olefins catalyzed by phosphine-phosphite-Rh(I) complexes has been investigated. Hydroformylation of symmetrical heterocyclic olefins such as 2,5-dihydrofuran, 3-pyrroline derivatives, and 4,7-dihydro-1,3-dioxepin derivatives afforded the optically active aldehydes as single products in 64-76% ee. Unsymmetrical substrates such as 2,3-dihydrofuran and N-(t
Synthesis of isotopically chiral [13C]penciclovir (BRL 39123) and its use to determine the absolute configuration of penciclovir triphosphate formed in herpes virus infected cells
作者:Richard L. Jarvest、Roger D. Barnes、David L. Earnshaw、Kevin J. O'Toole、John T. Sime、R. Anthony Vere Hodge
DOI:10.1039/c39900000555
日期:——
Isotopicallychiral [13C]penciclovir (BRL39123) has been synthesised via a stereospecific hydrolysis catalysed by the lipase from Candida cylindraceae and has been used to determine, by 13C NMR, that the triphosphate of penciclovirformed in herpes simplex type 1 infectedcells has (S) stereochemistry with an enantiomeric purity of > 95%.
同位素手性[ 13 C]喷昔洛韦(BRL 39123)已通过来自假丝酵母念珠菌的脂肪酶催化的立体定向水解合成,并已通过13 C NMR用于确定在感染了单纯疱疹1型细胞中喷昔洛韦的三磷酸酯。具有(S)立体化学,对映体纯度> 95%。
Sime, John T.; Barnes, Roger D.; Elson, Stephen W., Journal of the Chemical Society. Perkin transactions I, 1992, # 13, p. 1653 - 1658
作者:Sime, John T.、Barnes, Roger D.、Elson, Stephen W.、Jarvest, Richard L.、O'Toole, Kevin J.
DOI:——
日期:——
JARVEST, RICHARD L.;BARNES, ROGER D.;EARNSHAW, DAVID L.;OTOOLE, KEVIN J.;+, J. CHEM. SOC. CHEM. COMMUN.,(1990) N, C. 555-556
作者:JARVEST, RICHARD L.、BARNES, ROGER D.、EARNSHAW, DAVID L.、OTOOLE, KEVIN J.、+
DOI:——
日期:——
Diastereoselective hydrogenations of α-alkyl α-(2,3,4,6-tetra-O-acetyl-β-<scp>D</scp>-glucopyranosyloxy)methylene carbonyl compounds. New route to stereopure α-alkyl α-oxymethyl carbonyl compounds
作者:David S. Larsen、Anthony Schofield、Richard J. Stoodley、Peter D. Tiffin
DOI:10.1039/p19960002487
日期:——
Wittigcondensation of the stabilisedphosphoranes 9, 10 and 26 with 1-formyl-2,3,4,6-tetra-O-acetyl-β-D-glucopyranose 11 leads to the vinylogous carbonates 12, 13 and 22. The salts 27–30 and 44, prepared from the corresponding carbonyl compounds, ethyl formate and sodium methoxide, react with acetobromoglucose 21 to give compounds 22–25 and 43.