Synthesis of benzoyl phenyl benzoates as effective inhibitors for phospholipase A2 and hyaluronidase enzymes
作者:Shaukath Ara Khanum、Satish Kumar Murari、Bannikuppe Sannanaik Vishwanth、Sheena Shashikanth
DOI:10.1016/j.bmcl.2005.06.012
日期:2005.9
Benzoylation of (hydroxy phenyl) phenyl methanone 2a-g to benzoyl phenyl benzoates 4a-g, a benzophenone analogue, was achieved in good yield. All the newly synthesized compounds were evaluated for their phospholipase A(2) [E.C. 3.1.1.4] and hyaluronidase [E.C. 3.2.1.35] enzyme inhibitory activity in snake venom as source and their structure activity relationship with respect to different groups is reported for the first time. The in vitro PLA(2) enzyme inhibitory activity and in vivo anti-inflammatory activity studies of benzoyl phenyl benzoates are illustrated. (c) 2005 Elsevier Ltd. All rights reserved.
Synthesis of some newer analogues of substituted dibenzoyl phenol as potent anti-inflammatory agents
作者:Shaukath Ara. Khanum、Venu T. D、Sheena Shashikanth、Aiysha Firdouse
DOI:10.1016/j.bmcl.2004.08.014
日期:2004.11
3a-f, which on Fries rearrangement using microwave irradiation led to a facile synthesis of solely dibenzoyl phenols 4a-f in excellent yield. The newly synthesized compounds were screened for their anti-inflammatory activity and were compared with standard drugs. Out of the compounds studied, the compound 4e showed more potent activity than the standard drugs at all doses tested.
Fries rearrangement of substituted phenyl benzoates 1a-j to substituted hydroxy benzophenones 2a-j was achieved in excellent yield. Further benzoylation of 2a-j to benzoyloxy benzophenones 4a-n, a benzophenone analogue was achieved in good yield. All the newly synthesized compounds were evaluated for their anti-inflammatory activity and were compared with standard drugs. Out of the compounds studied