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首页> 外文期刊>The Journal of Antibiotics: An International Journal >MR566A AND MR566B, NEW MELANIN SYNTHESIS INHIBITORS PRODUCED BY TRICHODERMA HARZIANUM .1. TAXONOMY, FERMENTATION, ISOLATION AND BIOLOGICAL ACTIVITIES
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MR566A AND MR566B, NEW MELANIN SYNTHESIS INHIBITORS PRODUCED BY TRICHODERMA HARZIANUM .1. TAXONOMY, FERMENTATION, ISOLATION AND BIOLOGICAL ACTIVITIES

机译:毛滴虫Trichoderma Harzianum生产的新型黑色素合成抑制剂MR566A和MR566B..1。分类法,发酵,分离和生物活性

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New melanin synthesis inhibitors (MR566A and B) and six related known isocyanocyclopentenes were isolated from the fermentation broth of Trichoderma harzianum. The IC50 values of MR566A and B against mushroom tyrosinase were 1.72 and 47 mu M, respectively. They inhibited melanin biosynthesis in B16 melanoma cells with MIC values of 0.1 and 2.2 mu M, respectively. Also isolated from the same culture extract of T. harzianum was a new oxazole (MR93B), which showed no inhibitory activity against mushroom tyrosinase at a concentration of 1,000 mu g/ml. [References: 15]
机译:从哈茨木霉的发酵液中分离出了新的黑色素合成抑制剂(MR566A和B)和六个相关的已知异氰基环戊烯。 MR566A和B对蘑菇酪氨酸酶的IC50值分别为1.72和47μM。它们抑制B16黑色素瘤细胞中MIC值分别为0.1和2.2μM的黑色素生物合成。还从哈茨木霉的相同培养物提取物中分离出了新的恶唑(MR93B),其在浓度为1,000μg / ml时对蘑菇酪氨酸酶没有抑制活性。 [参考:15]

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