Abstract In this study, bromoalkyl glycosides were successfully synthesized in microreactor scale by Fischer glycosylation. Yields between 24 and 40% after purification achieved using various acidic catalysts conditions. some experiments, yields 180% higher than with previously known methods could be achieved. This study showed also that reversed-phase flash chromatography is more successful no...

One of these plants utilized in traditional medicine is Lactuca seriolla Linn., which belongs to the Asteraceae family. It goes by a variety common names world, including prickly lettuce, wild jagged and Kahu khas. The work aimed isolate characterize some bioactive constituent(s) from aerial part serriola utilizing Combiflash NEXTGEN high-performance liquid chromatography (HPLC). (aerial part) ...

Some Chromeno[4,3-b]quinoline derivatives were synthesized in a tricomponents one-pot reaction of 1,3-cyclohexadione arylaldehydes and 4-aminocoumarin under Microwave irradiation in the solventless system by using a heteropolyacid catalyst ,H3[PW12O40] in 80-95% yields and high rates. The shorter reaction times, one-pot, good yields, simple work-up procedure and environmentally friendly conditi...

with respect to the high incidence of hot flash in postmenopausal women and the controversies regarding its treatment, this double-blind clinical trial was conducted to determine the effects of pimpinella anisum on hot flashes in these women referring to rural and urban health centers of qazvin province in 2009. seventy-two women with hot flashes were randomly selected according to the predeter...

some chromeno[4,3-b]quinoline derivatives were synthesized in a tricomponents one-pot reaction of 1,3-cyclohexadione arylaldehydes and 4-aminocoumarin under microwave irradiation in the solventless system by using a heteropolyacid catalyst ,h3[pw12o40] in 80-95% yields and high rates. the shorter reaction times, one-pot, good yields, simple work-up procedure and environmentally friendly conditi...

Arylthiols were reacted with acrylonitrile under basic conditions to form the corresponding aryl sulfides which oxidised sodium metaperiodate in aqueous methanol yield 3-arylsulphinylpropanenitriles that upon thermolysis refluxing toluene produced a mixture of diarylthiosulfonates and diaryldisulfides. The two products was easily separated by flash chromatography characterized spectroscopically...

1. General Information All reactions were carried out in flame-dried glassware under an atmosphere of argon or nitrogen using anhydrous solvent. Dichloromethane was dried by passage through activated alumina columns. n-Propylamine was distilled from activated zinc dust and stored over sodium hydroxide. All other reagents were purchased from Acros, Aldrich, Alfa Aesar or Strem and used as receiv...