(2R,3R,4S,5R)-N-(methoxycarbonyl)-3,4-epoxy-5-(methyl)-2-(p-methoxyphenyl)-pyrrolidine

(2R,3R,4R)-3,4-di-tert-butoxy-2-methyl-N-hydroxypyrrolidine

(2R,3R,4R,5R)-4-Methoxymethoxy-5-(4-methoxy-phenyl)-1,2-dimethyl-pyrrolidin-3-ol

(2R,3R,4R,5R)-N-(methoxycarbonyl)-3,4-dihydroxy-5-(methyl)-2-(p-methoxyphenyl)-pyrrolidine

(2R,3R,4R,5R)-1-(benzyloxycarbonyl)-2-(4-methoxyphenyl)-5-methylpyrrolidine-3,4-diyl diacetate