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- Title
Design, synthesis, and antiplasmodial evaluation of a series of novel sulfoximine analogues of carbohydrate‐based thiochromans.
- Authors
Chizema, Munashe; Mabasa, Tommy F.; Hoppe, Heinrich C.; Kinfe, Henok H.
- Abstract
Sulfone/sulfoxide‐containing carbohydrate derived thiochromans were found to be highly active antiplasmodial agents. However, the inability of the sulfone/sulfoxide functional groups for further derivatization and manipulation limited the potential for further exploration. In this study, based on the interesting and important physicochemical properties, as well as amenability of sulfoximines (isosters of sulfones) for further derivatization, a series of novel sulfoximine‐type carbohydrate‐derived thiochroman derivatives have been successfully synthesized, characterized, and evaluated for their antiplasmodial activity. Although the replacement of the sulfone functional group with a sulfoximine unit improved the antiplasmodial activity of the scaffolds, the activity was highly dependent on the configuration of the stereogenic centre at the sulfur atom. Moreover, analysis of the crystal structures of the sulfoximine analogues revealed that the bond between the sulfur and nitrogen atoms of the sulfoximine functional group is not a true double bond but rather a polarized single bond. A library of novel carbohydrate‐derived sulfoximines have been synthesized and investigated for their antiplasmodial activity. In comparison of their sulfone analogues, sulfoximines exhibited better antiplasmodial activity against the 3D7 strain of Plasmodium falciparum. Furthermore, the bonding nature of sulfoximines has been described for the first time with the aid of XRD analysis.
- Subjects
DRUG design; DRUG synthesis; ANTIPARASITIC agents; PLASMODIUM falciparum; FUNCTIONAL groups; CARBOHYDRATES; SULFOXIMINES
- Publication
Chemical Biology & Drug Design, 2019, Vol 93, Issue 3, p254
- ISSN
1747-0277
- Publication type
Article
- DOI
10.1111/cbdd.13408