Plant extract, compositions containing same, method of extraction and uses thereof
申请人:Botanic Century (Beijing Co. Ltd.)
公开号:US10016474B2
公开(公告)日:2018-07-10
An extract from leaves of mulberry is disclosed. The extract has an IC50 value sufficient to inhibit α-glucosidase I. The extract may comprise 5-40% (w/w) total imino sugars and 20-70% (w/w) total amino acids. The extract may reduce the production of melanin for the treatment of such ailments or diseases caused by pigmentation as freckle, chloasma, striae gravidarum, sensile plaque and melanoma. The extract may also control blood glucose level.
Plant extract obtained from Morus plant leaves, compositions containing same, method of extraction and uses thereof
申请人:Botanic Century (Beijing) Co. Ltd.
公开号:US11090349B2
公开(公告)日:2021-08-17
An extract from leaves of mulberry is disclosed. The extract has an IC50 value sufficient to inhibit α-glucosidase I. The extract may comprise 5-40% (w/w) total imino sugars and 20-70% (w/w) total amino acids. The extract may reduce the production of melanin for the treatment of such ailments or diseases caused by pigmentation as freckle, chloasma, striae gravidarum, sensile plaque and melanoma. The extract may also control blood glucose level.
Screening assay for the identification of inhibitors of macrophage migration inhibitory factor
申请人:——
公开号:US20030105014A1
公开(公告)日:2003-06-05
The present invention encompasses assays to identify compounds that inhibit the enzymatic activity of MIF which catalyzes the tautomerization of MIF-substrates, such as D-dopachrome to DHICA. In general, the assay is conducted in vitro by adding, mixing or combining MIF and a suitable substrate in the presence or absence of a test compound, and measuring the tautomerization of the substrate. The test compounds that inhibit tautomerization in the assay are identified as MIF inhibitors.
Mechanism of the rearrangement of dopachrome to 5,6-dihydroxyindole
作者:C. Costantini、O. Crescenzi、G. Prota
DOI:10.1016/s0040-4039(00)79394-4
日期:1991.7
Kinetic and isotopic labelling studies provide for the first time evidence that at physiological pH the rearrangement of dopachrome (1) to 5,6-dihydroxyindole (2) involves abstraction of the proton at position 3 and formation of the intermediate quinone-methide 4.