以水为反应介质,采用环境友好的方法合成了由2-(苄基磺酰基)苯并噻唑衍生的新型抗真菌农药。这些化合物是通过一锅法,两步合成法制备的,从2-巯基苯并噻唑和苄基卤化物开始。针对一组植物病原性真菌测试了潜在的杀菌剂,其中许多杀菌剂与未氧化的类似物和市售抗真菌药Captan相比有显着改善。新的衍生物2-((2-氯苄基)磺酰基)苯并[ d ]噻唑(4f)和2-((4-甲基苄基)磺酰基)苯并[ d ]噻唑(4k)表现出显着的性能,能够抑制生长两个抗性霉菌(烟曲霉)和曲霉菌)。无论4F和4K可以被归类为广谱杀菌剂,正在成为这些模具,这在食品生产的负面影响的控制可能的候选人。
A Protocol To Transform Sulfones into Nitrones and Aldehydes
作者:Eduardo Rodrigo、Inés Alonso、M. Belén Cid
DOI:10.1021/acs.orglett.8b02483
日期:2018.9.21
A simple method to transform sulfones into nitrones and therefore into the corresponding carbonyl derivatives has been developed. Some examples demonstrate that it is a new reliable and versatile reaction in the toolbox of sulfones that has great synthetic potential. NMR and computational studies were used to elucidate the mechanism.
Expedient synthesis of α-substituted fluoroethenes
作者:Samir K. Mandal、Arun K. Ghosh、Rakesh Kumar、Barbara Zajc
DOI:10.1039/c2ob07031f
日期:——
mild and efficient synthesis of 1-aryl-1-fluoroethenes from benzothiazolyl (aryl)fluoromethyl sulfones and paraformaldehyde, under DBU- or Cs2CO3-mediated conditions at room temperature, is described. A comparable diethyl fluoro(naphthalen-2-yl)methylphosphonate reagent does not react with paraformaldehyde under these mild conditions. The utility of the methodology for synthesis of terminal α-fluoroalkenes
描述了在室温下,在 DBU 或 Cs 2 CO 3介导的条件下,由苯并噻唑基(芳基)氟甲基砜和多聚甲醛温和有效地合成 1-芳基-1-氟乙烯。类似的氟(萘-2-基)甲基膦酸二乙酯试剂在这些温和条件下不会与多聚甲醛发生反应。还显示了该方法用于合成带有吸电子官能团的末端 α-氟代烯烃的实用性。
De novo design and synthesis of HIV-1 integrase inhibitors
作者:Mahindra T Makhija、Rajesh T Kasliwal、Vithal M Kulkarni、Nouri Neamati
DOI:10.1016/j.bmc.2004.02.005
日期:2004.5
Existing AIDS therapies are out of reach for most HIV-infected people in developing countries and, where available, they are limited by their toxicity and their cost. New anti-HIV agents are needed urgently to combat emerging viral resistance and reduce the side effects associated with currently available drugs. Toward this end, LeapFrog, a de novo drug design program was used to design novel, potent, and selective inhibitors of HIV-1 integrase. The designed compounds were synthesized and tested for in vitro inhibition of HIV-1 integrase. Out of the 25 compounds that were designed, and synthesized, four molecules (compounds 23, 26, 43, and 59) showed moderate to low inhibition of HIV-1 integrase for 3'-processing and 3'-strand transfer activities. Nonetheless, these compounds possess structural features not seen in known HIV-1 integrase inhibitors and thus can serve as excellent leads for further optimization of anti-HIV-1 integrase activity. (C) 2004 Elsevier Ltd. All rights reserved.