VER 发表于 2025-3-21 17:53:07
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Use of Vinyl Magnesium Bromide in the Synthesis of Labeled Compounds: New Preparations of Glycerol-1ompounds ith C.. An improved method for the synthesis of glyceric acid-1-C. has recently been described by Ashworth in England [.]. However, especially in the case of glycerol, the published methods are time-consuming and the overall yield is fairly low.ineptitude 发表于 2025-3-22 06:28:07
C14-Labeled Cardiac Glycosideson. Ruzicka, Reichstein, and Fürst [.] and others [.] first demonstrated the possibility of its synthesis from steroids other than cardenolides by means of the Reformatsky reaction [.]. By reaction of various 21-acyloxypregnanone-(20) derivatives with bromacetic acid ethyl ester and zinc, they obtai叙述 发表于 2025-3-22 11:33:09
https://doi.org/10.1007/978-3-031-25935-7bstrates were at variance with conclusions from previous work based on C.-labeled glucose. This was suspected to be the result of tritium isotope effects. It was deemed of value to prepare glucose labeled with tritium in positions 3 and 4. Glucose-3-H. was previously used by Kemp and Rose[.].Inexorable 发表于 2025-3-22 13:26:09
d fields. The rapid evolution of sophisticated instrumentation and labeling techniques during the past ten years has made possible on a routine basis exquisitly sensitive experiments which with other techniques would require her culean efforts on the part of the investigator. The Symposia on AdvancLandlocked 发表于 2025-3-22 20:10:09
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Pricing in Crises and Price Wars,chieved partial synthesis of a 14 .-OH compound for the first time. However, the yields were at most 20%, as was also the case for the partial synthesis of digitoxigenin-3-acetate-23-C. later described by Turba and Scholtissek [.], probably because the lability of the 14 . -OH compounds is higher than usual for the Reformatsky reaction.AMBI 发表于 2025-3-23 06:30:55
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