2-[3-(carbamothioylhydrazinylidene)-2-oxoindol-1-yl]acetic acid 、
dihydroartesiminin 在
N,N-二异丙基乙胺 、 Methanaminium,N-[(dimethylamino)(3H-1,2,3-triazolo[4,5-b]pyridin-3-yloxy)methylene]-N-methyl-, hexafluorophosphate(1-) 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
生成 (3R,5aS,6R,8aS,9R,12R,12aR)‐3,6,9‐trimethyldecahydro‐12H‐3,12‐epoxy[1,2]dioxepino[4,3‐i]isochromen‐10‐yl 2‐(3‐(2‐carbamothioylhydrazineylidene)‐2‐oxoindolin‐1‐yl)acetate