(2R,4S)-Azetidine-2β,4β-dicarboxylic acid 2-methyl 4-tert-butyl ester
(2R,4S)-Azetidine-2β,4β-dicarboxylic acid 2-methyl 4-tert-butyl ester ??
??
(2R,4S)-Azetidine-2β,4β-dicarboxylic acid 2-methyl 4-tert-butyl ester C??? ??, ??, ??
(2R,4S)-Azetidine-2β,4β-dicarboxylic acid 2-methyl 4-tert-butyl ester ?? ?? ? ???
???
?? ??
(2R,4S)-Azetidine-2β,4β-dicarboxylic acid 2-methyl 4-tert-butyl ester ?? ??
???( 0)?? ??
