Studies on the Stability of 1,7,9-Trioxadispiro[5.1.5.2]pentadecane System: The Common Tricyclic Acetal Moiety in Pinnatoxins
作者:Jun Ishihara、Tetsuya Sugimoto、Akio Murai
DOI:10.1055/s-1998-1742
日期:1998.6
The stability of the common dispiroacetal moiety in pinnatoxins, the 1,7,9-trioxadispiro[5.1.5.2]pentadecane system, was investigated. The tricyclic keto acetal, of the natural form, was most favored among the possible isomers, however, its methylated form was not so preferential to be isomerized readily in the presence of acid. These stability results were supported by MM2 and AM1.
研究人员对羽扇豆毒素中常见的二螺缩醛分子,即 1,7,9-三氧二螺[5.1.5.2]十五烷系统的稳定性进行了调查。在可能的异构体中,天然形式的三环酮缩醛最受欢迎,但其甲基化形式在酸的存在下并不那么容易异构化。这些稳定性结果得到了 MM2 和 AM1 的支持。