supported by the National Natural Science Foundation of China (20902101 & 21172246);National Basic Research Program of China (973 Program) (2010CB833206)
In our synthetic studies toward huperzine A, a diastereoselective α'-alkylation of the α-amido-γ-methyl hexenone 4 was real- ized through a dianion intermediate which significantly enhanced the reactivity. Under t...
the financial support from the National Natural Science Foundation of China(20702032&20872098);the Ministry of Education of China(NCET-08-0365,IRT0846);National Basic Research Program of China(973 Program,2010CB833200)
An account of the total synthesis of(±)-,(+)-heliespirone A and(±)-,(-)-heliespirone C is presented.In the first-generation total synthesis,we found rac-24a could be easily transformed to rac-heliespirones A&C in a ...