Marchantin A trimethyl ether was subjected to react with m-chloroperbenzoic acid to yield hydroxylated derivatives as well as ring C degraded esters. This reaction was confirmed by application to catechol dimethyl ether and dihydroeugenol dimethyl ether.
Structures and Total Synthesis of Two Novel Bis(bibenzyls), Paleatins A and B, from the Liverwort Marchantia paleacea var. diptera.
Two novel bis(bibenzyls) named paleatins A (1) and B (2) have been isolated from the liverwort, Marchantia paleacea var. diptera. Their structures have been establishied by a combination of high-resolution NMR spectra and chemical degradation. A total synthesis of paleatin A has been accomplished in ten steps.
从肝草 Marchantia paleacea var.通过高分辨率核磁共振光谱和化学降解相结合的方法,确定了它们的结构。苍术素 A 的全合成分十步完成。