Two groups of natural products, sphydrofuran ( 1 ) and its furan derivative ( 2 ) and secosyrins 1 and 2 ( 3a, 3b ) and syributins 1 and 2 ( 4a, 4b ), were synthesized from one precursor ( 6 ), which was realized starting from 3-tri- n -butylstannylfuran or 3-bromofuran.
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Yu et al. (1997) studied this question.
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