Nucleophilic Addition Reaction of 2-Trimethylsilyloxyfuran to <i>N</i>-Gulosyl-<i>C</i>-alkoxymethylnitrones: Synthetic Approach to Polyoxin C

Abstract

[reaction: see text] The stereoselectivity of nucleophilic addition of 2-trimethylsilyloxyfuran to N-gulosyl-C-alkoxymethylnitrones was investigated. It was found that the selectivity was highly dependent on the bulkiness of the C-substituent of the nitrone. The major adducts were elaborated into the key intermediate of polyoxin C.