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4-Methallyl Substituted 1,2,4-Triazoline-3-thiones as a Source of N-Bridgehead Heterocycles
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4-Nitroisoxazoles as nitroalkene heterodienes: diastereoselective synthesis of spiro tricyclic nitroso acetals by thermal reactions with ethyl vinyl ether/
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4-O-TfO-2,3-anhydro-�L-ribopyranosides as chiron: a formal synthesis ofcanadensolide
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