Chiroptical studies of sugars. Part IV. Proposal of the glycosidic heteroatom [helicity rule in 1-thio--glycopyranosides |
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| Authors: | Emiri Ohtaki Hiroshi Meguro |
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| Affiliation: | Department of Food Chemistry, Faculty of Agriculture, Tohoku University, Amamiyamachi-Tsutsumidori, Sendai, Japan |
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| Abstract: | 1-Thio--dlycopyranosides gave CD bands at 220 nm (n→δ* of glycosidic sulfur). Their [θ] were shown as the sum of the two effects from ring oxygen and -OH at C-2, leading to the glycosidic heteroatom helicity rule to predict the configurations and conformations at C-1 and C-2. |
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