4,4′-二（4-氯甲酰苯氧基）二苯砜的合成

对甲基苯基三甲硅基醚;二氯二苯砜;二（氯甲酰基苯氧基）二苯砜;合成     

Induced Production,Synthesis, and Immunomodulatory Action of Clostrisulfone,a Diarylsulfone from Clostridium acetobutylicum

The anaerobe Clostridium acetobutylicum belongs to the most important industrially used bacteria. Whereas genome mining points to a high potential for secondary metabolism in C. acetobutylicum, the functions of most biosynthetic gene clusters are cryptic. We report that the addition of supra-physiological concentrations of cysteine triggered the formation of a novel natural product, clostrisulfone ( 1 ). Its structure was fully elucidated by NMR, MS and the chemical synthesis of a reference compound. Clostrisulfone is the first reported natural product with a diphenylsulfone scaffold. A biomimetic synthesis suggests that pentamethylchromanol-derived radicals capture sulfur dioxide to form 1 . In a cell-based assay using murine macrophages a biphasic and dose-dependent regulation of the LPS-induced release of nitric oxide was observed in the presence of 1 .     

Dapson in Heterocyclic Chemistry,Part III: Synthesis,Antimicrobial, and Antitumor Activities of Some New Bisheterocyclic Compounds Containing Biologically Active Diphenylsulfone Moiety

The key intermediate diisothiocyanate 2 was allowed to react with 5-amino-3-methyl-pyrazole-4-carbonitrile 3, ethyl 5-amino-1-phenyl-pyrazole-4-carboxylate 6, 2-amino-tetrahydrobenzo[b]thiophene-3-car-bonitrile 9, ethyl-2-amino-tetra-hydrobenzo[b]thiophene-3-carboxylate 12, and/or 1,2,4-triazole 15 to give the corresponding biscompounds 4, 5, 7, 8, 10, 11, 13, 14, and 16, respectively. The structure of the synthesized compounds was elucidated by elemental analyses and spectral data. Some of the prepared compounds were tested for their antimicrobial and antitumor activities.     

新型砜基聚苯并咪唑的合成

采用新的合成路线,以多聚磷酸催化4,4′-二羧基二苯砜与邻苯二胺反应制得双苯并咪唑二苯砜(3);以3和4,4′-二氟二苯砜为单体,环丁砜为溶剂,在无水碳酸钾存在下合成了新型砜基聚苯并咪唑,其结构经1H NMR,IR,MS和元素分析表征.     

聚醚酮酮/含萘环聚醚砜醚酮酮无规共聚物的合成与性能

聚芳醚酮作为一类耐高温特种工程塑料，具有优异的热、电、机械性能，已被广泛应用于电子电器、宇航、原子能工程等高科技领域．对于聚醚醚酮（ＰＥＥＫ）及其改性的研究已有很多报道［１～４］，然而有关主链含萘环的聚芳醚酮的报道较少［５］．前文［６］采用亲电取代路...     

Synthesis and Characterization of Tetraazaparacyclophane Disulfone

1,6,20,25‐Tetraaza[6.1.6.1]paracyclophane‐13,32‐disulfone D was synthesized under a very dilute condition by the cyclization between tetramethylene dibromide and N,N′‐di‐p‐tosylaminodiphenylsulfone B, which was prepared using N,N′‐diaminodiphenyl sulfone and p‐toluenesulfonyl as raw materials. 1,6,20,25‐Tetra‐sulfoferrocene‐1,6,20,25‐tetraaza[6.1.6.1]paracyclophane‐13,32‐disulfone E was prepared by modifying D with the bioactive unit ferrocene. The structures were confirmed by IR, ¹H NMR, and elemental analysis.