Synthetic anthracyclines: Regiospecific total synthesis of a D-ring indole analogue of daunomycin.
作者:Yasuyuki KITA、Masayuki KIRIHARA、Manabu SASHO、Yuji FUJII、Jun-ichi SEKIHACHI、Ryuichi OKUNAKA、Yasumitsu TAMURA、Kino-o SHIMOOKA
DOI:10.1248/cpb.38.585
日期:——
6-ethylenedioxy-5,6,7,8-tetrahydro-1,4-naphthoquinone (11) to give the tetrahydronaphtho[2,3-b]carbazole-7,12-dione (10), regioselectively. The cycloadduct (10) was successfully converted to a D-ring indole analogue of daunomycin (1a).
由3-甲氧基羰基-1-甲基吲哚-2-基乙酸甲酯(6)制得的4-甲氧基-5-甲基吡喃并[4,3-b]吲哚-1,3(4H,5H)-二酮(9),与2-氯-6,6-乙二氧基-5,6,7,8-四氢-1,4-萘醌(11)进行强碱诱导的环加成反应,得到四氢萘[2,3-b]咔唑- 7,12-二酮(10),区域选择性。环加合物(10)成功转化为道诺霉素(1a)的D环吲哚类似物。