Non-classical cardenolides from Calotropis gigantea exhibit anticancer effect as HIF-1 inhibitors

Zhiyuan Zheng, Zhong‐Bo Zhou, Qiulong Zhang, Xiaobo Zhou, Ji Yang, Ming-Rong Yang, Guo‐Yuan Zhu, Zhi‐Hong Jiang, Ting Li, Qianyu Lin, Li‐Ping Bai