Abstract
The stereoselectivity of iodine-promoted glycosylation with mannosyl
sulfoxides gives rise to unexpected β-selectivity with
less reactive alcohol acceptors. Less reactive accceptors also give
better coupling yields. Comparison of iodine with other promoters
highlights differences in reaction rates and stereoselectivities
indicative of different reaction mechanisms.
Key words
carbohydrates - glycosylations - iodine - stereoselectivity - sulfoxides
References
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2 Present address: Kartha K. P. R., National
Institute of Pharmaceutical Education and Research (NIPER), Sector 67,
S.A.S. Nagar, Mohali 160 062, Punjab, India.
3 Present address: Field R. A., Centre
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[9 ]
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[21 ]
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