Synthetic Study of Optically Active 3-Azabicyclo[3.3.0]octane-2,6,8-tricarboxylic Acid
作者:Yasushi Arakawa、Masafumi Ohnishi、Norikazu Yoshimura、Shigeyuki Yoshifuji
DOI:10.1248/cpb.51.1015
日期:——
8-tricarboxylic acid (2) from trans-4-hydroxy-L-proline (5) was attempted. A Diels-Alder reaction of 3,4-dehydroproline derivative 9 and cyclopentadiene afforded a single stereoisomer 11. The Diels-Alder adduct was smoothly converted to the hydrochloride of 2 (24) via RuO(4) oxidation. Although some racemization of the material or product was observed during the synthetic processes, the amino acid 24 proved
尝试由反式-4-羟基-L-脯氨酸(5)合成(1R,2S,5S,6R,8S)-3-氮杂双环[3.3.0]辛烷-2,6,8-三羧酸(2) 。3,4-脱氢脯氨酸衍生物9与环戊二烯的Diels-Alder反应得到单一的立体异构体11。Diels-Alder加合物通过RuO(4)氧化平稳地转化为2(24)的盐酸盐。尽管在合成过程中观察到材料或产物的一些消旋,但氨基酸24被证明是光学纯的。