Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10595120 | Bioorganic & Medicinal Chemistry Letters | 2013 | 4 Pages |
Abstract
The methanolic extract from the dried rhizomes of Curcuma comosa cultivated in Thailand was found to inhibit melanogenesis in theophylline-stimulated murine B16 melanoma 4A5 cells. From the methanolic extract, three new diarylheptanoids, diarylcomosols I-III, were isolated together with 12 known diarylheptanoids. Their chemical structures were elucidated on the basis of chemical and physicochemical evidence. The diarylheptanoids inhibited melanogenesis, and several structural requirements of the active constituents for the inhibition were clarified. In particular, (3R)-1,7-bis(4-hydroxyphenyl)-(6E)-6-hepten-3-ol exhibited stronger inhibitory effect [IC50 = 0.36 μM] without inducing cytotoxicity. The biological effect was much stronger than that of a reference compound, arbutin [IC50 = 174 μM]. We conclude that diarylheptanoid analogs are promising therapeutic agents for the treatment of skin disorders.
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Authors
Takahiro Matsumoto, Seikou Nakamura, Souichi Nakashima, Masayuki Yoshikawa, Katsuyoshi Fujimoto, Tomoe Ohta, Azumi Morita, Rie Yasui, Eri Kashiwazaki, Hisashi Matsuda,