Heterocycles from carbohydrates

Ferndndez-Bolanos JG, Lopez 6 (2007) Heterocycles from Carbohydrate Isothiocyanates. 7 67-100... 

As shown in Scheme 2.21 Id, starting with N-allyl carbohydrate-nitrones (469), a series of chiral six- (470) and seven-membered(471) TV-heterocycles were synthesized (Scheme 2.227). A very interesting and useful aspect of this cycloaddition is the control of regioselectivity by the substitution at the nitrogen atom. Therefore, it is possible to direct reactions towards the syntheses of preferred six- or seven-membered heterocycles from carbohydrate derivatives (722). 

Lichtenthaler, F.W., Unsaturated O- and N-Heterocycles From Carbohydrate Feedstocks,. 4c-counts of Chemical Research, 35, 728-737 (2002). 

E. S. H. El Ashry and A. El Nemr, Synthesis of Naturally Occurring Nitrogen Heterocycles from Carbohydrates, (2005) Blackwell, Oxford, UK, http //www.blackwellpublishing.com/more reviews. 

Saturated O-heterocycles from carbohydrates as biodegradable surface active agents 89WCH135. 

Unsaturated A-heterocycles from carbohydrate feedstocks 02ACR728. 

Synthesis of Naturally Occurring Nitrogen Heterocycles from Carbohydrates... 

Synthesis of naturally occurring nitrogen heterocycles from carbohydrates / El Sayed H. El Ashry, Ahmed El Nemr.- 1st ed. p. cm. 

A method to produce sugars from a biomass by hydrolysis and then to subject the sugars to dehydration to form heterocyclic compounds, useful as liquid fuels, is described in a patent [16]. The formation of heterocycles from carbohydrates is an interesting subject in food research [17,18]. Flavor contribution and formation of heterocyclic oxygen-containing key aroma compounds in thermally processed foods were reviewed [17,18]. Furanone,... 

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