“Doubly enantiophobic” behavior during crystallization of racemic 1,5-dihydro-2<i>H</i>-pyrrol-2-one thioether
作者:Olga A. Lodochnikova、Aigul R. Zaripova、Robert R. Fayzullin、Aida I. Samigullina、Irina I. Vandyukova、Lubov N. Potapova、Almira R. Kurbangalieva
DOI:10.1039/c8ce00369f
日期:——
resolution of the racemate into the enantiomers in two different ways, which is an exceptional phenomenon. Phase behavior and structure of the crystalline modifications of 7 were investigated by means of single crystal and powder X-ray diffraction, differential scanning calorimetry, temperature-resolved vibration spectroscopy, and hot-stage microscopy.
Unlocking Acyclic π-Bond Rich Structure Space with Tetraethynylethylene–Tetravinylethylene Hybrids
作者:Kelsey L. Horvath、Nicholas L. Magann、Madison J. Sowden、Michael G. Gardiner、Michael S. Sherburn
DOI:10.1021/jacs.9b08885
日期:2019.12.18
Literature reports describe tetraethynylethylene (TEE) as unstable but tetravinylethylene (TVE) as stable. The stabilities of these two known compounds are reinvestigated, along with those of five unprecedented TEE-TVE hybrid compounds. The five new C10 hydro-carbons possess a core, tetrasubstituted C=C bond carrying all possible combinations of vinyl and ethynyl groups. A unified strategy is described
Synthesis of amino acid derivatives of 5-alkoxy-3,4-dihalo-2(5<i>H</i>)-furanones and their preliminary bioactivity investigation as linkers
作者:Shi-He Luo、Kai Yang、Jian-Yun Lin、Juan-Juan Gao、Xin-Yan Wu、Zhao-Yang Wang
DOI:10.1039/c9ob00736a
日期:——
investigated by comparison with other 2(5H)-furanone compounds by constructing C-O/C-S bonds. The preliminary results of the biological activity assay by the MTT method on a series of cancer cell lines in vitro reveal that the introduction of amino acids basically has no toxic effect. This can lead to these 2(5H)-furanonederivatives being further well-linked with other bioactive moieties with amino or hydroxy
Synthesis and biological evaluation of novel artemisone–piperazine–tetronamide hybrids
作者:Meng-Xue Wei、Jia-Ying Yu、Xin-Xin Liu、Xue-Qiang Li、Jin-Hui Yang、Meng-Wei Zhang、Pei-Wen Yang、Si-Si Zhang、Yu He
DOI:10.1039/d1ra00750e
日期:——
For the first time, six novel artemisone–piperazine–tetronamide hybrids (12a–f) were efficiently synthesised from dihydroartemisinin (DHA) and investigated for their in vitro cytotoxicity against some human cancer cells and benign cells. All the targets showed good cytotoxic activity in vitro. Hybrid 12a exhibited much better inhibitory activity against human liver cancer cell line SMMC-7721 (IC50