The authors request to correct the structure of SH-19017 in Fig. 1B on page 579. The authors synthesized a variety of creamstranone derivatives and unintentionally presented the structure of another compound. As SH-19017 had no cytotoxic effect as shown in Supplementary Fig. 2, this error does not affect the conclusion of the article. However, the authors apologize for this accidental error and inconvenience.

Figure 1. Structure of cremastranone and homoisoflavane derivatives. (A) Natural product cremastranone and synthetic homoisoflavane SH-17059, (B) A-ring modification of SH-17059, and (C) B-ring modification of SH-17059.