.alpha.-(Fluoromethyl)dehydroornithine and .alpha.-(fluoromethyl)dehydroputrescine analogs as irreversible inhibitors of ornithine decarboxylase
作者:Philippe Bey、F. Gerhart、V. Van Dorsselaer、C. Danzin
DOI:10.1021/jm00365a002
日期:1983.11
(E)-Dehydro analogues of alpha-(fluoromethyl)putrescine and -ornithine derivatives were synthesized and evaluated in vitro as irreversible inhibitors of a preparation of ornithine decarboxylase (ODC, EC 4.1.1.17) obtained from rat liver. The key step in the synthesis of (E)-alpha-(fluoromethyl)dehydroornithine (17) and -putrescine (14) was the addition of propenylmagnesium bromide to fluoroacetonitrile
合成了α-(氟甲基)putrescine和-鸟氨酸衍生物的(E)-Dehydro类似物,并作为从大鼠肝脏中获得的鸟氨酸脱羧酶制剂(ODC,EC 4.1.1.17)的不可逆抑制剂进行了体外评估。合成(E)-α-(氟甲基)脱氢鸟氨酸(17)和-腐胺(14)的关键步骤是在氟乙腈中添加丙烯基溴化镁。将所得的不稳定的共轭亚胺盐用NaBH 4原位区域还原,或用NaCN溶液淬灭,分别得到相应的不饱和α-(氟甲基)胺和α-氨基腈。通过包括以下步骤的四步序列将它们转化为17和14:(a)胺官能的邻苯二甲酰化;(b)甲基的烯丙基溴化;(c)加百利反应;(d)水解切割保护基。(E)-α-(二氟甲基)脱氢鸟氨酸(10)和-腐胺(7)由2-(二氟甲基)-2-(2-丙烯基)丙二酸乙基叔丁基酯和2-(二氟甲基)二叔丁基制备)-2-(2-丙烯基)丙二酸酯,其序列类似于先前报道的用于合成饱和类似物的序列。与相应的饱和类似物