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A versatile method for the preparation of indolizidine alkaloids from 1-benzyloxy-5-(p-toluenesulfonamido)-3-alken-2-ols as stereodefined key intermediates has been developed. The utility of this approach was demonstrated by the synthesis of (+)-monomorine I.
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Reaction of allene-substituted cyclohexa- and cyclohepta-1,3-dienes with [PdCl(2)(PhCN)(2)] gave eta(3)-(1,2,3)-cyclohexenyl- and eta(3)-(1,2,3)-cycloheptenylpalladium complexes, respectively, in which C-C bond formation between the allene and the 1,3-diene has occurred. Analysis of the (pi-allyl)pa...
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A 4-year-old ewe with weight loss, anorexia, and high liver enzyme activities was diagnosed at necropsy as having cholangiocellular carcinoma that had metastasized to kidneys, adrenal glands, heart, lungs, mediastinum, and peritoneal surface of the diaphragm. Cholangiocellular carcinoma is an uncomm...
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The following studies were designed to evaluate plasma elimination kinetics of intravenously administered antipyrine, acetaminophen and lidocaine among 9 healthy adult horses and 9 healthy drug-free humans (3 each per drug group), in order to compare potential species differences in drug-metabolizin...
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Ataxia was diagnosed in kids from a New England goat herd. Concurrent infection with the caprine arthritis/encephalitis (CAE) virus contributed to the development of hind limb ataxia and weakness in one of the kids. Six kids from this herd had signs of hind limb ataxia and paralysis. Detailed evalua...
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Regio- and stereoselective palladium-catalyzed reactions of allene-substituted 1,3-dienes 1 in acetic acid at room temperature lead to cyclization with formation of a carbon-carbon bond between the middle carbon of the allene and the terminal carbon of the 1,3-diene. Two different types of reactions...
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A study was conducted to compare the efficacy of sulbactam: ampicillin (SAMP) (3.3:6.6 mg/kg body weight (BW), IM, q24 h) to that of ampicillin trihydrate (AMP) (6 mg/kg BW, IM, q24 h) and 0.9% saline (SAL) (3 mL IM, q24 h) for the treatment of diarrhea in calves induced by oral inoculation with Esc...
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Background The quantitative effect of strong electrolytes, unmeasured anions (UAs), pCO2, and plasma protein concentrations in determining plasma pH and bicarbonate (HCO3−) can be demonstrated using the physicochemical approach. Demeanor of calves with diarrhea is associated with acidemia, dehydr...
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In a study of susceptibilities of sows from 2 herds to experimentally induced Escherichia coli mastitis, a marked difference was seen. The "susceptible" sows were from a conventional herd and "resistant" sows were from a specific-pathogen-free herd. The purpose of the study was t...
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A 15-month-old Appaloosa colt had pyrexia, weight loss, diarrhea, and dependent edema. Abnormal laboratory findings included anemia, hypoalbuminemia, and hyperglobulinemia. Activities of liver-specific enzymes in this colt were high. Analysis of a liver biopsy specimen resulted in a presumptive diag...
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