Total synthesis of (±)-sacidumlignans D and A through Ueno–Stork radical cyclization reaction
作者:Jian-Jian Zhang、Chang-Song Yan、Yu Peng、Zhen-Biao Luo、Xiao-Bo Xu、Ya-Wen Wang
DOI:10.1039/c3ob00053b
日期:——
Efficient synthesis of (±)-sacidumlignan D (4) has been successfully achieved employing Ueno–Stork radicalcyclization of α-bromo acetal 21 as a key step. Two synthetic approaches for the symmetrical diaryl ketone 19 have been discussed in detail. Notably, sacidumlignan A (1) can be also efficiently synthesized in only 7 steps with 25% overall yield, where acid triggered tandem reaction starting from