Research Article

Two Novel Norwithasteroids with Unusual Six- and Seven-Membered Ether Rings in Side Chain from Flos Daturae

Table 2

Effect of compounds 1 and 2 on Con A proliferation of mouse splenocytes in vitro.

CompoundsIC50 (nM)

Cyclosporine4.3 ± 0.2
110.2 ± 1.3
213.5 ± 1.6