Studies on the syntheses of heterocyclic compounds. Part CDI. Rearrangement of β-hydroxylaudanosine
作者:T. Kametani、S. Hirata、S. Shibuya、K. Fukumoto
DOI:10.1039/j39710001927
日期:——
1,2,3,4-Tetrahydro-1-(α-hydroxy-3,4-dimethoxybenzyl)-6,7-dimethoxy-2-methylisoquinoline (β-hydroxylaudanosine)(5) was treated with toluene-p-sulphonyl chloride in the presence of triethylamine to afford 2,3-dihydro-7,8-dimethoxy-5-(3,4-dimethoxyphenyl)-3-methyl-1H-3-benzazepine (6), whose reduction product (9) was also obtained by dehydrative cyclisation of β-hydroxy-3,4-dimethoxy-N-(3,4-dimethoxy
用甲苯-对-磺酰氯处理1,2,3,4-四氢-1-(α-羟基-3,4-二甲氧基苄基)-6,7-二甲氧基-2-甲基异喹啉(β-羟基月桂肌苷)(5)在三乙胺的存在下得到2,3,2-二氢-7,8-二甲氧基-5-(3,4-二甲氧基苯基)-3-甲基-1 H -3-苯并pine庚因(6),其还原产物(9)为也可通过β-羟基-3,4-二甲氧基-N-(3,4-二甲氧基苯乙基)苯乙胺的脱水环化反应制得(15),然后进行苯并ze庚因的Eschweiler-Clarke反应(18)。