Direct and Stereoselective Synthesis of α-Linked 2-Deoxyglycosides
作者:Jin Park、Thomas J. Boltje、Geert-Jan Boons
DOI:10.1021/ol801833n
日期:2008.10.2
alpha-Linked 2-deoxyglycosides were conveniently obtained by employing a glycosyl donor having a participating ( S)-(phenylthiomethyl)benzyl moiety at C-6, whereas 2,6-dideoxy-alpha-glycosides could be prepared by BF 3.Et 2O-promoted activation of allyl glycosyl donors.
Reagent‐Controlled α‐Selective Dehydrative Glycosylation of 2,6‐Dideoxy‐ and 2,3,6‐Trideoxy Sugars
作者:Jason M. Nogueira、Marissa Bylsma、Danielle K. Bright、Clay S. Bennett
DOI:10.1002/anie.201605091
日期:2016.8.16
that activating either 2,3‐bis(2,3,4‐trimethoxyphenyl)cyclopropenone or 2,3‐bis(2,3,4‐trimethoxyphenyl)cyclopropene‐1‐thione with oxalyl bromide results in the formation of a species that promotes the glycosylation between 2,6‐dideoxy‐sugar hemiacetals and glycosyl acceptors in good yield and high α‐selectivity. Both reactions are mild and tolerate a number of sensitive functional groups including highly