First Total Synthesis of Prionoid E, A Bioactive Rearranged Secoabietane Diterpene Quinone from Salvia prionitis
作者:Fei Deng、Jun Xu、Min Zhao、Hong-Ying Liu、Yang Ye、Jin-Sheng Zhang
DOI:10.1002/hlca.201000435
日期:2011.7
The first total synthesis of prionoid E (1), a rearranged secoabietane diterpene quinone isolated from Salvia prionitis, was achieved efficiently by means of Wacker oxidation (Scheme 5) and aldol condensation (Scheme 7) as the key steps in the synthetic sequence. Thus 1 was prepared in 15 steps in 3.7% yield starting on one hand from anisole (=methoxybenzene) and methylsuccinic anhydride (=dihydro‐3‐methylfuran‐2
通过Wacker氧化(方案5)和羟醛缩合(方案7)作为合成序列中的关键步骤,有效地实现了从丹参pr病中分离出的重排的芥子烷二萜醌-酮E(1)的第一个全合成。因此1在3.7%产率的起始15个步骤制备从苯甲醚一方面(=甲氧基苯)和甲基琥珀酸酐(=二氢-3-甲基呋喃-2,5-二酮)通过4(方案3和5),并在另一方面是2-羟基-2-甲基丙酸,经5(方案6)。