Isolation and structures of two novel neolignans, asatone (1) and isoasatone (2), are described. The structure of the latter, established by means of an X-ray crystallographic analysis of its dihydroxy derivative, is in full agreement with its chemical and spectral data. From a biogenetic point of view, furthermore, thermal and photochemical reactions of these neolignans and their derivatives were carried out. In particular,asatone was photochemically converted into isoasatone.
本文描述了两种新型新
木质素--asatone (1) 和 isoasatone (2) 的分离和结构。后者的结构是通过对其二羟基衍
生物进行 X 射线晶体学分析而确定的,与其
化学和光谱数据完全一致。此外,还从
生物遗传学的角度对这些新
木质素及其衍
生物进行了热反应和光
化学反应。其中,asatone 在光
化学作用下转化为异asatone。