Design, docking studies and molecular iodine catalyzed synthesis of benzo[a]xanthen-one derivatives as hyaluronidase inhibitors
作者:Mahadev N. Kumbar、Ravindra R. Kamble、Atulkumar A. Kamble、Shrinivas D. Joshi、Sheshagiri R. Dixit、Joy Hoskeri
DOI:10.1007/s00044-016-1655-2
日期:2016.11
A series of novel benzo[a]xanthen-11(12H)-one derivatives 4a–m were designed and subjected to docking studies. The title compounds were synthesized from 3-aryl-4-formylsydnones 1a–m, β-naphthol and dimedone in presence of molecular iodine as a catalyst and evaluated for their in vitro inhibitory effects on the hyaluronidase.
设计了一系列新颖的苯并[ a ]黄体酮11(12 H)-一衍生物4a - m并进行了对接研究。由3-芳基-4-甲酰基sydnones 1a – m,β-萘酚和二甲酮在分子碘作为催化剂的条件下合成标题化合物,并对其在体外对透明质酸酶的抑制作用进行了评估。
A zinc-catalyzed synthesis of 3-trifluoromethyl-4-trifluoroacetyl pyrazoles
and general method for the synthesis of 3-trifluoromethyl-4‑trifluoroacetyl pyrazoles from the cycloaddition of sydnones with 1,1,1,5,5,5-hexafluoropentane-2,4-dione has been established. Using ZnI2/bpy as a catalyst in THF, this protocol proved to be general to prepare a variety of 3-trifluoromethyl-4‑trifluoroacetyl pyrazoles in good yields. Utility of this method was demonstrated by further transformations