Synthetic Studies on the Initially Proposed Structure of Protoaculeine B: Discovery of Neuronally Active Heterotricyclic Amino Acids
作者:Kazunori Otsuka、Masayoshi Miyahara、Sara Takaki、Ryoya Wakabayashi、Kei Miyako、Raku Irie、Satoshi Takamizawa、Ryuichi Sakai、Masato Oikawa
DOI:10.1002/ejoc.202200669
日期:2022.9.27
Synthetic studies on the initially proposed structure of protoaculeine B are described. Starting from DL-tryptophan, two candidates of the suitably protected heterotricyclic subunits were stereoselectively synthesized over 8 and 16 steps, respectively. Furthermore, two heterotricyclic amino acid diastereomers, finally synthesized, were found to be neuroactive: the (9S*,11S*)-isomer was hyperactive
描述了最初提出的 protoaculeine B 结构的合成研究。从 DL-色氨酸开始,分别经过 8 步和 16 步立体选择性合成了两种适当保护的杂三环亚基候选物。此外,最终合成的两种杂三环氨基酸非对映异构体被发现具有神经活性:(9 S *,11 S *)-异构体过度活跃,而非对映异构体 (9 S *,11 R *)-异构体对小鼠脑室内活性低下。注射。