Stereospecific Synthesis of cis-2,4-Pyrrolidinedicarboxylic Acid and cis-2,5-Piperidinedicarboxylic Acid.
作者:Yasushi ARAKAWA、Mika YASUDA、Masafumi OHNISHI、Shigeyuki YOSHIFUJI
DOI:10.1248/cpb.45.255
日期:——
Lactams derived from hetero Diels-Alder adducts were stereospecifically converted into cis-2, 4-pyrrolidinedicarboxylic acid and cis-2, 5-piperidinedicarboxylic acid by ruthenium tetroxide oxidation. Optically active (2S, 4S)-(-)-2, 4-pyrrolidinedicarboxylic acid and (2R, 4R)-(+)-2, 4-pyrrolidinedicarboxylic acid were synthesized from (1S, 4R)-(+)-2-azabicyclo[2.2.1]hept-5-en-3-one and (1R, 4S)-(-)-2-azabicyclo[2.2.1]hept-5-en-3-one, respectively.
来自杂环Diels-Alder加合物的内酰胺通过钌四氧化物氧化被立体特异性地转化为顺-2, 4-吡咯烷二羧酸和顺-2, 5-哌啶二羧酸。光学活性的(2S, 4S)-(-)-2, 4-吡咯烷二羧酸和(2R, 4R)-(+)-2, 4-吡咯烷二羧酸分别是从(1S, 4R)-(+)-2-氮杂双环[2.2.1]庚-5-烯-3-酮和(1R, 4S)-(-)-2-氮杂双环[2.2.1]庚-5-烯-3-酮合成的。