Zirconium tetrachloride as a convenient
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Stanislaw Pikul; A. Greg Switzer
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Article
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1997
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Elsevier Science
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English
⚖ 180 KB
Zirconium tetrachloride was found to catalyze glycosylation of various sterols with peracetylated 5-hydroxymethylene galactosyl fluoride. (~) 1997 Elsevier Science Ltd In the course of our work on cholesterol-lowering glycosides I we have experienced low yields of the glycosylation reaction using 5