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The alkaloidal toxin, (−)-swainsonine: (1S,2R,8R,8aR)-1,2,8-trihydroxyoctahydroindolizine has been synthesized stereoselectively starting from methyl 3-acetamido-2,4,6-tri-O-acetyl-3-deoxy-α-d-mannopyranoside in a 15 steps reaction.
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Suami et al. (1984) studied this question.
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