Synthesis of N-substituted (6-benzyl-4,4-dimethyl-2-cyclohexenyl)methylamines and related compounds.
作者:TAKESHI KATO、KIYOHISA KAWAI、YOICHI SAWA
DOI:10.1248/cpb.32.44
日期:——
In a search for synthetic non-narcotic analgesics, 1, 6-trans-N-substituted (6-benzyl-4, 4-dimethyl-2-cyclohexenyl) methylamines (5) were prepared by dehydration of the corresponding 2, 3-trans-2-aminomethyl-3-benzylcyclohexanols (2 and 3) with thionyl chloride. The (1-cyclohexenyl) methylamines (4) and the 1, 2-trans-(2-chlorocyclohexyl) methylamines (6) were also produced from the 1, 2-cis-cyclohexanols (2) as minor products, but the only isolable by-product from the 1, 2-trans-cyclohexanols (3) was the 1, 2-cis-(2-chlorocyclohexyl) methylamines (7). The 1, 6-cis-(6-benzyl-2-cyclohexenyl) methylamine (13a) was obtained by isomerization of the 2, 3-trans-3-benzyl-2-dimethylaminomethylcyclohexanone (1a) followed by reduction and dehydration. Catalytic hydrogenation of (2-benzyl-2-cyclohexenyl) methylamines (17) gave the 1, 2-trans-and 1, 2-cis-cyclohexylmethylamines (8 and 19). Among the compounds tested, 1, 6-trans-N, N-dimethyl-(6-benzyl-4, 4-dimethyl-2-cyclohexenyl) methylamine (5a) hydrochloride was as potent as codeine phosphate in analgesic activity as determined by the phenylquinone writhing method.
在寻找合成非麻醉性镇痛药时,通过相应的 2, 3-反式脱水制备 1, 6-反式-N-取代的(6-苄基-4, 4-二甲基-2-环己烯基)甲胺 (5) -2-氨基甲基-3-苄基环己醇(2和3)与亚硫酰氯。 (1-环己烯基)甲胺 (4) 和 1, 2-反式-(2-氯环己基)甲胺 (6) 也由 1, 2-顺式环己醇 (2) 作为次要产物生产,但唯一可分离的1, 2-反式-环己醇(3)的副产物是1, 2-顺式-(2-氯环己基)甲胺(7)。将2, 3-反式-3-苄基-2-二甲基氨基甲基环己酮(1a)异构化,然后还原、脱水,得到1, 6-顺式-(6-苄基-2-环己烯基)甲胺(13a)。 (2-苄基-2-环己烯基)甲胺(17)的催化氢化得到1, 2-反式-和1, 2-顺式-环己基甲胺(8和19)。在测试的化合物中,1, 6-反式-N, N-二甲基-(6-苄基-4, 4-二甲基-2-环己烯基) 甲胺 (5a) 盐酸盐的镇痛活性与磷酸可待因相同,根据苯醌扭体法。