Bioactive natural products are useful sources of new pharmaceutics. Their analogues are also important for evaluating structure-activity relationships. In this study the structure-activity relationships of 2,3-dihydro-6-methylginketin (1) for BACE-1 inhibitory activity were studied. Biflavonoids consisting of flavanone and flavone, and also the presence of a methoxy group at the C-4' position, were found to be important for strong activity. 2,3-Dihydro-6-methylbilobetin (2) showed strong activity with an IC50 value of 0.56 mu M.
Photochemical deoxygenation of an α-ketol: the dihydroflavonol–flavanone conversion
作者:Jan H. van der Westhuizen、Daneel Ferreira、David G. Roux
DOI:10.1039/p19800001003
日期:——
to free phenolic flavanone analogues with complete retention of configuration at C(2). Similarly their methyl ethers give the corresponding flavanones and flavones. The reaction represents the photochemical equivalent of a reduction under Clemmensen conditions.