نتایج جستجو برای: quinolizidinyl derivatives
تعداد نتایج: 104900 فیلتر نتایج به سال:
first principles calculations were carried out for investigation the novel 7-hydroxycoumarinyl gallates derivatives in gas and liquid phases using density functional theory (dft) method. computational chemistry simulations were carried out to compare calculated quantum chemical parameters for gallates derivatives. all calculations were performed using dmol3 code which is based on dft. the doubl...
A series of new hexahydroquinoline and 1,4-dihydropyrimidine derivatives were synthesized. Condensation of 2-methyl- thiazole-4-carboxaldehyde (1) with 1,3-cyclohexanedione and alkyl 3- aminocrotonate afforded 4-(2-methyl-thiazol-4-yl)-hexahydroquinoline while condensation of aldehyde (1) with benzoyl acetone and thiourea gave 1,4-dihydropyrimidine derivatives. The stereochemistry of 1,4-dihydr...
The aim of present experiment was to measure endogenous urinary purine derivatives using feed restriction method, as well as to determine the effect of 4 levels feeding on microbial protein synthesis. The present experiments was conducted by four camels about 326 Kg body weight. The camels were fed by different level of Atriplex leucoclada (AL), including maintenance, 1.25, 1.5 times of mainte...
This chapter introduces the reader to the area of parametric image registration, from a beginner’s point of view. Given a model, an input image and a reference image, the parametric registration task is to find a set of parameters (of the model) that transform the input image into the reference image. This chapter reviews models of the general projective, affine, similarity and Euclidean transf...
Hydroxyethyl starches (HES) are commonly used synthetic colloidal solution in veterinary medicine. Despite of possible adverse effect to kidney injury in human, there is no report about nephrotoxic effects of HES in dogs. HES was administered to a Golden retriever (4-year-old, intact male) with ascites in order to increase plasma osmolality. Initially, the dog was mild azotemic, however, kidney...
The computation of optical ow from image derivatives is biased in regions of non uniform gradient distributions. A least-squares or total least squares approach to computing optic ow from image derivatives even in regions of consistent ow can lead to a systematic bias dependent upon the direction of the optic ow, the distribution of the gradient directions, and the distribution of the image noi...
tyrosinase is a multifunctional copper-containing enzyme. it can catalyze two distinct reactions of melanin synthesis and benzaldehyde derivatives, which are potential tyrosinase inhibitors. to find the relationships between charge distributions of benzaldehyde and their pharmaceutical behavior, the present study aimed at investigating nuclear quadrupole coupling constants of quadrupolare nucl...
in the recent years, the role of lox enzymes in the cause of neoplastic diseases such as colorectal, skin, pancreatic and renal cancers has been confirmed. a new series of 1,3,4-thiadiazole derivatives bearing 2-pyridyl moiety was synthesized and their cytotoxicity was assessed using mtt protocol. enzyme inhibitory activity of prepared compounds was also tested against 15-lipoxygenase-1 as nove...
Guanidine and its derivatives have wide applications in various industries and energetic materials. Because of these wide applications, various researches are concentrated on the synthesis of guanidine and its derivatives. This review article has introduced synthesis methods of guanidine and its derivatives. Guanidine synthesis routes like addition of ammonium salts to cyanoguanidine or cyanam...
in this work, different ethyl 2,4-dioxo-4-arylbutanoate derivatives were prepared and evaluated for their src kinase inhibitory activity. for this purpose, the appropriate substituted acetophenone derivatives reacted with diethyl oxalate in the presence of sodium ethoxide in dried ethanol to give the corresponding products. all compounds showed moderate activities comparing with staurosporine a...
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