The present invention provides a compound of Formula I, II or III or a salt or prodrug or derivative thereof that is useful for skin-whitening by inhibiting melanin formation and removing existing melanin and the inhibition of melanoma growth and/or the removal of existing melanoma cells.
                            本发明提供了一种化合物I、II或III或其盐或前药或衍
生物,通过抑制
黑色素形成和去除现有
黑色素以及抑制
黑色素瘤生长和/或去除现有
黑色素瘤细胞,在美白皮肤方面具有用处。