Syntheses of 4-hydroxy-5-iodo-2,3-dimeth
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Kai van Laak; Hans-Dieter Scharf
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Article
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1989
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Elsevier Science
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French
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Hy&o~-5-iodo-2J-dimdimethoxyd-methylbenzoic acid (1) and 5-bromo-4-hydroxy-2,3-dimethoxy-6-methylbenzoic acid (2) are the polysubstituted aromatic carboxylic aciakfoundin calichemicin antibiotics.' The title compounds are synthesized on preparative scale from readily available methyl 4-0-bensylorsel