10.1021/ol0156906.s001 Xuhong Cheng Xuhong Cheng Noshena Khan Noshena Khan Govindaraj Kumaran Govindaraj Kumaran David R. Mootoo David R. Mootoo A Convergent Strategy for the Synthesis of β-Carba-galacto-disaccharides American Chemical Society 2001 Convergent Strategy ether glycone carbasugar ring monosaccharide alcohols cyclization synthesis 23 b component ion formation convergent strategy aglycone preparation Synthesi oxocarbenium 2001-04-05 00:00:00 Journal contribution https://acs.figshare.com/articles/journal_contribution/A_Convergent_Strategy_for_the_Synthesis_of_-Carba-galacto-disaccharides/3738861 A convergent strategy for the synthesis of β-carba-galacto-disaccharides is illustrated by the preparation of <b>1</b> and <b>4</b>, from a central “glycone” component <b>22</b>, and the corresponding “aglycone” segments, monosaccharide alcohols, <b>23a</b> or <b>23b</b>. The key step is the formation of the carbasugar ring via an oxocarbenium ion−enol ether cyclization