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New analogues of fosfomycin—synthesis of diethyl (1R,2R)- and (1S,2R)-1,2-epoxy-3-hydroxypropylphosphonates
Institution:Bioorganic Chemistry Laboratory, Faculty of Pharmacy, Medical University of ?ód?, 90-151 ?ód?, Muszyńskiego 1, Poland
Abstract:The trans-configured fosfomycin analogue, diethyl (1R,2R)-1,2-epoxy-3-hydroxypropylphosphonate, was synthesised via the intramolecular Williamson reaction from 3-O-protected (trityl or TBDMS) or even unprotected diethyl (1S,2R)-2,3-dihydroxy-1-mesyloxypropylphosphonate, which was obtained from the known diethyl (1S,2R)-2,3-O-cyclohexylidene-1,2,3-trihydroxypropylphosphonate. On the other hand, the cis-analogue, diethyl (1S,2R)-1,2-epoxy-3-hydroxypropylphosphonate, could only be prepared from diethyl (1R,2R)-2-hydroxy-1-mesyloxy-3-trityloxypropylphoshonate.
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