Cationic reduction of bastadin-4 to bastadin-5. Preparation of 5-[2h]-bastadin-5 by site-specific isotopic labeling |
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Authors: | Masuno Makoto N Molinski Tadeusz F |
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Institution: | Department of Chemistry, One Shields Avenue, University of California, Davis, California 95616, USA. |
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Abstract: | A chemoselective conversion of bastadin-4 to the important Ca2+ channel modulator bastadin-5 (1a) has been achieved using cationic hydrogenation (Et3SiH, TFA, 60%). Specifically deuterated bastadin-5 (1b, >95 at. %) was prepared following this method and the simplified 1H NMR H-5/H2-6 spin system of 1b exploited to study temperature-dependent macrocyclic ring dynamics. |
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