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Showing 1 to 2 of 2 for “"trioxadispiroketal"”.
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Efforts towards the Total Synthesis of Azaspiracid-3
… between C1-C12 segment and C13-C22 segment. The trioxadispiroketal skeleton was constructed under the influence of acid catalysis. The EFGHI domain highlighted a chelate controlled Mukaiyama aldol reaction to produce C22-C40 linear precursor, and a DIHMA process to assemble the bridged ketal. …
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Nucleophilic Carbon-Carbon Bond-Forming Reactions of 2-Methylenetetrahydropyrans
… furnished for further functionalization into trioxadispiroketal systems. Attempted cyclization of these substrates under a number of acidic conditions failed to provide the desired bis-spiroketal systems. Therefore a step-wise approach to their manufacture was attempted, although this too …