U. S. Gahlot, S. S. Rao, S. S. Dulawat, K. L. Ameta and B. L. Verma, “A Facile One-Pot Microwave Assisted Conversion of 3’-5’-Dibromo/Diiodo-4’-Hydroxy Substi- tutes Chalcones to 2-Substituted-4,6-Diaryl Pyrimi- dines Using S-Benzylisothiouronium Chloride (SBT) and Their Antibacterial Activities,” Afinidad, Vol. 60, No. 508, 2003, pp. 558-562.

has been cited by the following article:

• TITLE: Synthesis and Trypanocidal Evaluation of Some Novel 2-(Substituted Benzylidene)-5, 7-Dibromo-6-Hydroxy-1-Benzofuran-3(2H)-Ones

  AUTHORS: K. L. Ameta, Nitu S. Rathore, Biresh Kumar, Edith S. Malaga M, Manuela Verastegui P, Robert H. Gilman, B. L. Verma

  KEYWORDS: Chalcones; Aurones; Trypanosoma cruzi; Chagas Disease; Inhibition

  JOURNAL NAME: International Journal of Organic Chemistry, Vol.2 No.3A, November 29, 2012

  ABSTRACT: Substituted 2-benzylidene-1-benzofuran-3-ones are commonly known as aurones. This class of bioactive heterocycles belongs to flavonoid family. The article intends to put forth the rational design and synthesis of a new series of aurones using 3’,5’-dibromo-2’,4’-dihydroxychalcones and copper bromide in presence of DMF-water mixture (8:2, v/v) for the first time. Preliminary bioassay shows that most of compounds have good trypanocidal activity against Trypanosoma cruzi at 10 μg/mL. Few compounds are equally potent to the standard drugs Benznidazole and Nifurtimox. The structures of the newly synthesized products 2a-n were established by elemental analysis, FTIR, 1H NMR, 13C NMR and mass spectroscopic studies.