Download PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... A one-pot two-component synthesis of tricyclic pyrano[2,3-b]quinoxalines with a pendant hydroxymethyl fuction at the 2-position relevant to molybtopterin is described by the reaction of o-phenylenediamine and phenylhydrazone derivatives of sugars in good yields. ... Tricyclic pyrano[2,3-b] ...
