作者:Yong Zheng、Wei-Bin Song、Li-Jiang Xuan
DOI:10.1016/j.tet.2016.05.070
日期:2016.8
An asymmetric synthesis of (+)-salvianolic acid A with cardioprotective properties, has been accomplished in a convergent manner in eight steps and 10.6% overall yield. This synthesis features an asymmetric addition of organometallics to optically pure 2,3-epoxypropionate in the presence of BF3·Et2O, Ru(III)-catalyzed directed CH olefination, and I2-catalyzed isomerization reaction.
具有收敛性的(+)-丹酚酸A的不对称合成以八步收敛的方式完成,总收率为10.6%。该合成的特征是在BF 3 ·Et 2 O,Ru(III)催化的定向C H烯烃化和I 2催化的异构化反应的存在下,将有机金属化合物不对称地添加到光学纯的2,3-环氧丙酸酯中。