A Novel Method for Preparing Chromones via 1,2-Migration of α-Diazo-Flavanones
作者:Baochun Ma、Minghao Sun、Kejia You、Nian Chen
DOI:10.1055/a-1948-7303
日期:2023.2
A novelmethod for preparing chromones from α-diazo-flavanones has been developed. Good yields and regioselectivity are obtained through HCl catalysis and Rh2(Oct)4 catalysis. The chromone obtained can undergo a one-pot Diels–Alder reaction to synthesize flavanone propellane in high yield. Mechanisms about 1,2-migration under both catalysts are proposed.
Jayashree; Alam, Afroze; Kumar, D. Vijay, Indian Journal of Heterocyclic Chemistry, 2010, vol. 19, # 3, p. 237 - 240
作者:Jayashree、Alam, Afroze、Kumar, D. Vijay、Nayak, Yogendra
DOI:——
日期:——
Synthesis of 3-methylflavones and their antioxidant and antibacterial activities
作者:B. S. Jayashree、Afroze Alam、Yogendra Nayak、D. Vijay Kumar
DOI:10.1007/s00044-011-9725-y
日期:2012.8
An attempt was made to synthesise newer 3-methylflavones with various substitution on the ring A and B of 2-phenylchromen-4-one. They were evaluated for antioxidant activity and antibacterial activity against the Gram-positive and Gram-negative bacteria. Five test compounds exhibited DPPH radical scavenging activity with IC50 below 100 mu g/ml, and the same test compounds exhibited 50-100% growth inhibition in Gram-positive bacteria against standard Amoxicillin.
WURM, GOTTHARD;NORDMANN, MATTHIAS, ARCH. PHARM., 321,(1988) N 9, C. 555-558