114676-91-4
(2S,4R)-1-Boc-2-methylcarboxylate-4-tert-butyldimethylsilyloxy-pyrrolidine
→
134441-71-7
(2S,4R)-N-tert-butoxycarbonyl-4-tert-butyldimethylsilyloxy-2-formylpyrrolidine