Analgesic narcotic antagonists. 8. 7.alpha.-Alkyl-4,5.alpha.-epoxymorphinan-6-ones
作者:Michael P. Kotick、David L. Leland、Joseph O. Polazzi、John F. Howes、Ann R. Bousquet
DOI:10.1021/jm00144a015
日期:1981.12
The preparation of a series of 7 alpha-alkylated dihydrocodeinones is described. N-(Cyclopropylmethyl) (P series) or N-(cyclobutylmethyl) (B series) 7 alpha-methyl (a series) or 7 alpha, 8 beta-dimethyl (b series) substituted dihydronorcodeinones (7) were prepared from the appropriately substituted N-(cycloalkylmethyl)-4-hydroxymorphinan-6-ones (5) by dibromination, 4,5-epoxy ring closure, and catalytic
描述了一系列7个α-烷基化的二氢可待因酮的制备。由适当取代的N-(环丙基甲基)(P系列)或N-(环丁基甲基)(B系列)制备7个α-甲基(一个系列)或7个α,8个β-二甲基(b系列)取代的二氢降血统素(7) N-(环烷基甲基)-4-羟基吗啡喃-6-(5)通过二溴化,4,5-环氧闭环和催化脱溴作用。用BBr3处理7得到的3-酚8的收率很低。或者,二氢可待因酮(10)与二甲基甲酰胺二甲基乙缩醛的反应得到了7-[((二甲基氨基)亚甲基]亚甲基]加合物11,其被氢化为7个α-甲基-。 (12)或7α-(羟甲基)二氢可待因酮(13)。用锂试剂处理11种,然后氢化,得到7种α-烷基(15c-f)化合物和相应的4,5-环氧裂解产物的混合物16。11与α-乙氧基乙烯基锂反应得到中间体17,其经水解和氢化得到6,7-呋喃基。 (18)或吡咯基(19)衍生物。N-(环烷基甲基)-14-羟基二氢降冰片肌酮23P,