New flavones with antidiabetic activity from Callistemon lanceolatus DC
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Updated: May 18, 2026

Screening and Isolation of C-Glycoside-Cleaving Intestinal Bacteria
Published on: February 28, 2025
Syed Nazreen1, Gurpreet Kaur, Mohammad Mahboob Alam
1Department of Chemistry, Faculty of Science, Jamia Hamdard, Hamdard University, New Delhi-110062, India.
Abstract:
Phytochemical investigation of the aerial parts of Callistemon lanceolatus DC (Myrtaceae) led to the isolation of two new flavones characterized as 5,7-dihydroxy-6,8-dimethyl- 4' -methoxy flavone (1) and 8-(2-hydroxypropan-2-yl)-5-hydroxy-7-methoxy-6-methyl-4'-methoxy flavone (2) along with the seven known phytoconstituents. The structures of new compounds have been established on the basis of chemical and spectral studies and known compounds were compared with the published literature data. The isolated flavones exhibited blood glucose lowering effect in streptozotocin induced diabetic rats.
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