A small-scale synthesis and enantiomeric resolution of (RS)-[1-14C]-2-Phenylpropionic acid and biosynthesis of its diastereomeric acyl glucuronides
作者:David M. Shackleford、Peter J. Hayball、Geoffrey D. Reynolds、David P.G. Hamon、Allan M. Evans、Robert W. Milne、Roger L. Nation
DOI:10.1002/jlcr.450
日期:2001.3.15
David M. Shackleford, Peter J. Hayball, Geoffrey D. Reynolds, David P.G. Hamon, Allan M. Evans, Robert W. Milne, Roger L. Nation
David M. Shackleford、Peter J. Hayball、Geoffrey D. Reynolds、David PG Hamon、Allan M. Evans、Robert W. Milne、Roger L. Nation
A Simplified Synthesis of the Diastereomers of Levuglandin E<sub>2</sub>
作者:Venkataraman Amarnath、Kalyani Amarnath、Tina Masterson、Sean Davies、L. Jackson Roberts
DOI:10.1081/scc-200048945
日期:2005.1.1
report a synthesis of Levuglandin E2, as a mixture of easily separable diastereomers (15‐E2‐isoketals). The key feature is the protection of its reactive aldehyde as dimethyl acetal, which is introduced with 2,2‐dimethoxyethanal and removed in minutes with Montmorillonite K‐10. The synthesis could be modified to the preparation of 15‐E2‐isoketals with stable isotopes or with radiolabels.
Synthesis of14C-labeled 4-hydroxyindole as an intermediate for the preparation of (S)-2-[4-[2-[3-(indol-2-[14C]-4-yloxy)-2-hydroxypropylamino]-2-methylpropyl]-phenoxy]pyridine-5-carboxamide (LY368842-[indole-14C]) glycolate
作者:Boris A. Czeskis、Dean K. Clodfelter、William J. Wheeler
The acid-catalyzed dehydration of (methyl β-d-glycero-d-gulo-heptopyranosid)uronic acid
作者:Christian D. Cottet、Milton S. Feather
DOI:10.1016/s0008-6215(00)80812-5
日期:1981.12
organic solvents, isolated by hydrolysis and subsequent dehydration of (methyl β- d - glycero - d - gulo -heptopyranosid)uronicacid ( 1 ) in m sulfuric acid solution at 100°, is 5-hydroxymethyl-2-furaldehyde ( 2 ), presumably produced via loss of C-7 by decarboxylation. The mechanism of the conversion was studied by synthesis of the [1- 14 C] 1 and conversion to 5-hydroxymethyl-2-fur[ 14 C]aldehyde (