Synthesis of Pseudodeflectusin and Ustusorane C: Structural Revision of Aspergione A and B
作者:Kouji KURAMOCHI、Fumiyo SAITO、Atsuo NAKAZAKI、Toshifumi TAKEUCHI、Kazunori TSUBAKI、Fumio SUGAWARA、Susumu KOBAYASHI
DOI:10.1271/bbb.100241
日期:2010.8.23
The syntheses of racemic and optically active pseudodeflectusin and ustusorane C are described. The 1H- and 13C-NMR data for our synthetic pseudodeflectusin and ustusorane C were identical to those of the corresponding natural products. We also synthesized the proposed structure of aspergione A and B whose 1H- and 13C-NMR data were identical to those of ustusorane C and pseudodeflectusin. The 1H- and 13C-NMR spectra of our synthetic aspergione A and B were different from those of the natural compounds. Our results confirm that aspergione A and B are in fact ustusorane C and pseudodeflectusin, respectively.
我们描述了外消旋和光活性假偏转素及乌斯托索烯 C 的合成。我们合成的假偏转素和乌斯托索烯 C 的 1H-和 13C-NMR 数据与相应的天然产物完全一致。我们还合成了拟议的天青素 A 和 B 的结构,其 1H-和 13C-NMR 数据与乌斯托索烯 C 和假偏转素一致。我们合成的天青素 A 和 B 的 1H-和 13C-NMR 光谱与天然化合物不同。我们的结果确认天青素 A 和 B 实际上分别是乌斯托索烯 C 和假偏转素。