Room-Temperature Direct Alkenylation of 3-Arylsydnones
作者:Yiwen Yang、Chunxiang Kuang
DOI:10.1002/ejoc.201403211
日期:2014.12
A new efficient method for the directalkenylation of 3-arylsydnones by palladium-catalyzed C–H functionalization was developed. The reaction proceeded smoothly at room temperature and delivered the product in yields up to 83 %.
Rhodium-Catalyzed Oxidative Synthesis of Quinoline-Fused Sydnones via 2-fold C–H Bond Activation
作者:Lei Li、He Wang、Xifa Yang、Lingheng Kong、Fen Wang、Xingwei Li
DOI:10.1021/acs.joc.6b02356
日期:2016.12.2
Rh(III)-catalyzed synthesis of mesoionic heterocycles has been achieved via C–H activation of sydnones and oxidative coupling with internal alkynes. This reaction occurred under mild conditions with high efficiency, broad substrate scope, and low catalyst loading. Moreover, synthetic applications of a coupled product have been demonstrated in the late-stage derivatization into a variety of highly functionalized
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。
Transformation of the sydnone ring into oxadiazolinones. A convenient one-pot synthesis of 3-aryl-5-methyl-1,3,4-oxadiazolin-2-ones from 3-arylsydnones and their antimicrobial activity
作者:Shanta G Mallur、Bharati V Badami
DOI:10.1016/s0014-827x(99)00103-2
日期:2000.1
4-oxadiazolin-2-ones (IIIa-u) by a single-step reaction with bromine in acetic anhydride. In the preliminary screening of all these compounds, the halogen-substituted derivatives have shown antimicrobialactivities equal to those of the standard drugs used.