Using a palladium(II)-catalysed oxidative cyclisation as key step, we describe a highly efficient total synthesis of a series of naturally occurring 1,6-dioxygenated carbazole alkaloids: clausenine, 6-methoxymurrayanine, clausenol, clausine G, clausine I, clausine Z and methyl 1,6-dihydroxy-9H-carbazole-3-carboxylate.
使用
钯(II)催化的氧化环化作为关键步骤,我们描述了一系列天然存在的1,6-二加氧
咔唑生物碱的高效全合成:
黄嘌呤,6-甲氧基
尿烷,条款醇,克劳辛G,克劳辛I,克劳辛Z和1,6-二羟基-9 H-
咔唑-3-羧酸甲酯。