反应条件
trifluoroacetic acid 1) water, reflux, 30 h; 2) Et2O, 4 deg C, 2.5 h; Yield given. Multistep reaction. Yields of byproduct given;
参考文献
Yoshida, Takashi; Seno, Kaoru; Takama, Yukiko; Okuda, Takuo
Phytochemistry (Elsevier), 1982 , vol. 21, # 5 p. 1180 - 1182
