Stereochemical Assignment and First Synthesis of the Core of Miharamycin Antibiotics
作者:Filipa Marcelo、Jesús Jiménez-Barbero、Jérôme Marrot、Amélia P. Rauter、Pierre Sinaÿ、Yves Blériot
DOI:10.1002/chem.200801826
日期:2008.11.10
The relativeconfiguration at C-6' of nucleoside antibiotic miharamycin A has been elucidated by NMR spectroscopy and proved to be S. The totalsynthesis of miharamycin B has also been investigated, which has led to the unprecedented construction of its core. The bicyclic sugar moiety has been elaborated by means of a SmI(2)-based keto-alkyne coupling. Elongation of its C-6 position towards a bicyclic
Synthesis of methyl 4-deoxy-3-C-[(S)-1,2-dihydroxyethyl]-α-d-xylo-hexopyranoside and methyl 2,2′-anhydro-3-C-[(S)-1,2-dihydroxyethyl]-α-d-glucopyranoside derivatives
Abstract The title branched-chainsugars possessing a newtype of two-carbon branch were synthesised from d -glucose. These compounds are important intermediates for a total synthesis of the nucleoside antibiotics, amipurimycin and miharamycin.
Synthesis of novel purine nucleosides towards a selective inhibition of human butyrylcholinesterase
作者:Filipa Marcelo、Filipa V.M. Silva、Margarida Goulart、Jorge Justino、Pierre Sinaÿ、Yves Blériot、Amélia P. Rauter
DOI:10.1016/j.bmc.2009.05.057
日期:2009.7
methyl glucopyranoside with the nucleobase to obtain only N7 nucleosides in reasonable yield (55–60%). The nucleosides as well as their sugar precursors were screened for acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) inhibition. While none of the compounds tested inhibited AChE, remarkably, some of the N7 nucleosides and sugar bicyclic derivatives showed potent inhibition towards BChE