133464-37-6Relevant articles and documents
A simple convenient synthesis of L-[4-13C] glutamine
Nagasawa, Kokoro,Kishida, Atsushi,Kajiwara, Masahiro,Kanamatsu, Tomoyuki,Takatori, Kazuhiko
, p. 42 - 45 (2015)
L-[4-13C]Glutamine was synthesized from sodium [2-13C]acetate in 12 steps and 18% overall yield. A Wittig reaction of (R)-benzyl 4-formyl-2,2-dimethyloxazolidine-3-carboxylate and ethyl 2-(triphenylphosphoranylidene)[2-13C]acetate prepared from D-serine and sodium [2-13C]acetate, respectively, gave (4S)-4-(2-ethoxycarbonyl[2-13C]vinyl)-2,2-dimethyloxazolidine-3-carboxylic acid α,β-isopropylidene group, oxidation of the resulting hydroxyl group to a carboxyl group and transamidation of the ester moiety gave L-N-Cbz-[4-13C]glutamine (Cbz = benzyloxycarbonyl). Finally, removal of the Cbz group gave L-[4-13C]glutamine. L-[4-13C]Glutamine can be prepared in fewer steps and higher yield by this method compared with previously reported methods.
METHOD OF TREATING POLYCYSTIC KIDNEY DISEASES WITH CERAMIDE DERIVATIVES
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Paragraph 0270, (2016/10/08)
PROBLEM TO BE SOLVED: To provide a method of treating polycystic kidney diseases with ceramide derivatives. SOLUTION: A pharmaceutical composition for treating polycystic kidney disease in a subject comprises an effective amount of a predetermined compoun
DDQ-Promoted Benzylic/Allylic sp3 C-H Activation for the Stereoselective Intramolecular C-N Bond Formation: Applications to the Total Synthesis of (-)-Codonopsinine, (+)-5-epi-Codonopsinine, (+)-Radicamine B, and (-)-Codonopsinol
Lingamurthy, Macha,Jagadeesh, Yerri,Ramakrishna, Katakam,Rao, Batchu Venkateswara
, p. 1367 - 1377 (2016/03/01)
This is the first report on an intramolecular C-N bond formation of an amide-tethered benzylic/allylic system using DDQ under neutral conditions which has been successfully applied to the total synthesis of naturally occurring pyrolidine alkaloids. The key steps for the synthesis of corresponding precursors involve Julia-Kociensky olefination/cross-metathesis and dihydroxylation reactions, and this methodology is also extended to the ω-unsaturated N-sulfanilamide to furnish piperidines.