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Improved preparation of perallylated cyclodextrins: facile synthesis of cyclodextrin-based polycationic and
Jiahong Ni1, Suddham Singh, Lai-Xi Wang
1Institute of Human Virology, University of Maryland Biotechnology Institute, University of Maryland, 725 W. Lombard Street, Baltimore, MD 21201, USA.
Carbohydrate Research
|February 15, 2002
Abstract:
An improved procedure for the perallylation of cyclodextrins allowed the preparation of O-perallylated alpha-, beta-, and gamma-cyclodextrins in 89, 91, and 88% yields, respectively. These were converted into two cyclodextrin-based functionalized compounds, the polycationic heptakis[2,3,6-tri-O-(6-amino-3-thiahexyl)]-beta-cyclodextrin hydrochloride (3), and the polyanionic heptakis[2,3,6-tri-O-(sodium 5-carboxyl-3-thiapentyl)]-beta-cyclodextrin (4), a potential inhibitor of HIV-1 replication.