A facile enantioselective synthesis of (1R, 2R, 3S)-1-amino-2,3-bishydroxymethylcyclobutane derivatives, a key synthetic intermediate of carbocyclic oxetanocins
(1R2R,3S)-1-Amino-2,3-bishydroxymethylcyclobutane derivatives (14, 15) have been synthesized enantioselectively by [2+3] formation of a cyclopentane ring from (−)-dimenthyl succinate and 3-chloro-2-(chloromethyl)-1-propene and the subsequent ring contraction by the Wolff rearrangement, and the Curtius reaction.
(1 R 2 R,3 S)-1-氨基-2,3-双羟基甲基环丁烷衍生物(14,15)是通过[2 + 3]由(-)-丁二酸琥珀酸酯和3-环戊烷环的对映选择性合成的。氯-2-(氯甲基)-1-丙烯和随后的环缩因沃尔夫夫重排而发生,并发生库尔蒂斯反应。