S1 Supporting Information Solid-Phase Synthesis of Dinucleoside and Nucleoside-Carbohydrate Phosphodiesters and Thiophosphodiesters Yousef Ahmadibeni and Keykavous Parang* Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, The University of Rhode Island, Kingston, Rhode Island 02881. *Corresponding author. 41 Lower College Road, Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, Rhode Island, 02881, USA; Tel.: +1-401-874-4471; Fax: +1-401-874-5787; E-mail address: kparang@uri.edu.