open access

https://hdl.handle.net/2115/433

α-Glucosidase inhibition of 6-hydroxyflavones. Part 3, Synthesis and evaluation of 2,3,4-trihydroxybenzoyl-containing flavonoid analogs and 6-aminoflavones as α-previous termglucosidasenext term inhibitors

英語

6-aminoflavones

2005-03-01

Elsevier

Bioorganic & Medicinal Chemistry

13(5)

1661-1667

The SAR studies suggested that the C-ring of baicalein (1) was not necessary for the activity, and validated the importance of 2,3,4-trihydroxybenzoyl structure of 1. Thus, a series of 2,3,4-trihydroxybenzoyl-containing flavonoid analogs were investigated for the α-previous termglucosidasenext term inhibitory activity. The results indicated that 5,6,7-trihydroxy-2-phenyl-4-quinolone (2) and 5,6,7-trihydroxyflavanone (4) showed the comparable activity to 1, while 3,5,6,7-tetrahydroxyflavone (7), 5,6,7-trihydroxyisoflavone (8), and 6-hydroxygenistein (9) showed moderate α-previous termglucosidasenext term inhibitory activity. In addition, it was found that 6-amino-5,7-dihydroxyflavone (16) was a more potent and specific rat intestinal α-previous termglucosidasenext term inhibitor than 1, and showed the comparable activity to acarbose. This is the first report on mammalian intestinal α-previous termglucosidasenext term inhibitory activity of 6-aminoflavones. Kinetic studies revealed that 16 inhibited both sucrose- and maltose-hydrolyzing activities of rat intestinal α-previous termglucosidasenext term uncompetitively.

学術雑誌論文

Accepted Manuscript

09680896