1QXE Structural Basis for the Potent Antisickling Effect of a Novel Class of 5-Membered Heterocyclic Aldehydic Compounds Homo sapiens (human) 5URC Design, Synthesis, Functional and Biological Evaluation of Ether and Ester Derivatives of the Antisickling Agent 5-HMF for the Treatment of Sickle Cell Disease Homo sapiens (Human)