Acetamides of 1,2,3,4,5,6-hexahydro-2,6-methano-3-benzazocine (benzomorphan), 5,6.7,8,9,10-hexahydro-6,9-methanobenzocyclo-octene, and 6,7,8,9,10,11-hexahydro-7,10-methanocyclo-octa[b][1]benzothiophene as potential selective opioid analgesics
作者:Brian Iddon、Patrick N. Yat
DOI:10.1039/p19900001091
日期:——
(5), (8), and (12) respectively. Reduction with sodium borohydride in methanol of 6,7,8,9,10,11 -hexahydro-7,10-methanocyclo-octa[b][1]benzothiophen-12-one (15) gave exclusively the syn-alcohol (9). 11α-Acetamido-3,6-dimethyl-1,2,3,4,5,6-hexahydro-2,6-methano-3-benzazocine (1) was prepared by reduction in acetic acid–acetic anhydride of 3,6-dimethyl-1,2,3,4,5,6-hexahydro-2,6-methano-3-benzazocin-11-one
用锌粉在乙酸和乙酸酐的混合物中还原5,6,7,8,9,10-六氢-6,9-甲基苯并环辛烯-11-一肟的乙酸盐(13),仅得到syn -11-乙酰氨基-5,6,7,8,9,10-六氢-6,9-甲基苯并环辛烯(3)。相比之下,6,7,8,9,10,11-六氢-7,10-甲基环辛基[ b ] [1]苯并噻吩-12-肟(16)的乙酸盐(17)给出了syn-(6)(28%收率)和抗-12-乙酰氨基衍生物(10)(25%)。三种酰胺(3),(6)和(10)用酸水解成相应的胺(4),(7)和(11),并用氢化锂铝还原成相应的N-乙基衍生物(5),(8)和(12)。在甲醇中用硼氢化钠还原6,7,8,9,10,11-六氢-7,10-甲基环八-[ b ] [1]苯并噻吩-12-(15)仅得到合成醇(9)。11α-乙酰氨基-3,6-二甲基-1,2,3,4,5,6-六氢-2,6-甲氨基-3-苯并佐辛(1)的制备方法是,将3